diff options
Diffstat (limited to 'fs/nilfs2')
-rw-r--r-- | fs/nilfs2/alloc.c | 12 | ||||
-rw-r--r-- | fs/nilfs2/alloc.h | 2 | ||||
-rw-r--r-- | fs/nilfs2/bmap.c | 12 | ||||
-rw-r--r-- | fs/nilfs2/bmap.h | 3 | ||||
-rw-r--r-- | fs/nilfs2/btnode.c | 7 | ||||
-rw-r--r-- | fs/nilfs2/btree.c | 6 | ||||
-rw-r--r-- | fs/nilfs2/dir.c | 5 | ||||
-rw-r--r-- | fs/nilfs2/direct.c | 4 | ||||
-rw-r--r-- | fs/nilfs2/file.c | 4 | ||||
-rw-r--r-- | fs/nilfs2/gcinode.c | 1 | ||||
-rw-r--r-- | fs/nilfs2/inode.c | 84 | ||||
-rw-r--r-- | fs/nilfs2/ioctl.c | 115 | ||||
-rw-r--r-- | fs/nilfs2/mdt.c | 9 | ||||
-rw-r--r-- | fs/nilfs2/mdt.h | 2 | ||||
-rw-r--r-- | fs/nilfs2/namei.c | 2 | ||||
-rw-r--r-- | fs/nilfs2/nilfs.h | 33 | ||||
-rw-r--r-- | fs/nilfs2/page.c | 5 | ||||
-rw-r--r-- | fs/nilfs2/page.h | 3 | ||||
-rw-r--r-- | fs/nilfs2/recovery.c | 32 | ||||
-rw-r--r-- | fs/nilfs2/sb.h | 85 | ||||
-rw-r--r-- | fs/nilfs2/segbuf.c | 2 | ||||
-rw-r--r-- | fs/nilfs2/segment.c | 258 | ||||
-rw-r--r-- | fs/nilfs2/segment.h | 14 | ||||
-rw-r--r-- | fs/nilfs2/super.c | 214 | ||||
-rw-r--r-- | fs/nilfs2/the_nilfs.c | 44 | ||||
-rw-r--r-- | fs/nilfs2/the_nilfs.h | 51 |
26 files changed, 511 insertions, 498 deletions
diff --git a/fs/nilfs2/alloc.c b/fs/nilfs2/alloc.c index d7fd696e595c..0a0a66d98cce 100644 --- a/fs/nilfs2/alloc.c +++ b/fs/nilfs2/alloc.c @@ -521,8 +521,8 @@ void nilfs_palloc_commit_free_entry(struct inode *inode, group_offset, bitmap)) printk(KERN_WARNING "%s: entry number %llu already freed\n", __func__, (unsigned long long)req->pr_entry_nr); - - nilfs_palloc_group_desc_add_entries(inode, group, desc, 1); + else + nilfs_palloc_group_desc_add_entries(inode, group, desc, 1); kunmap(req->pr_bitmap_bh->b_page); kunmap(req->pr_desc_bh->b_page); @@ -558,8 +558,8 @@ void nilfs_palloc_abort_alloc_entry(struct inode *inode, group_offset, bitmap)) printk(KERN_WARNING "%s: entry number %llu already freed\n", __func__, (unsigned long long)req->pr_entry_nr); - - nilfs_palloc_group_desc_add_entries(inode, group, desc, 1); + else + nilfs_palloc_group_desc_add_entries(inode, group, desc, 1); kunmap(req->pr_bitmap_bh->b_page); kunmap(req->pr_desc_bh->b_page); @@ -665,7 +665,7 @@ int nilfs_palloc_freev(struct inode *inode, __u64 *entry_nrs, size_t nitems) for (j = i, n = 0; (j < nitems) && nilfs_palloc_group_is_in(inode, group, entry_nrs[j]); - j++, n++) { + j++) { nilfs_palloc_group(inode, entry_nrs[j], &group_offset); if (!nilfs_clear_bit_atomic( nilfs_mdt_bgl_lock(inode, group), @@ -674,6 +674,8 @@ int nilfs_palloc_freev(struct inode *inode, __u64 *entry_nrs, size_t nitems) "%s: entry number %llu already freed\n", __func__, (unsigned long long)entry_nrs[j]); + } else { + n++; } } nilfs_palloc_group_desc_add_entries(inode, group, desc, n); diff --git a/fs/nilfs2/alloc.h b/fs/nilfs2/alloc.h index 9af34a7e6e13..f5fde36b9e28 100644 --- a/fs/nilfs2/alloc.h +++ b/fs/nilfs2/alloc.h @@ -74,7 +74,7 @@ int nilfs_palloc_freev(struct inode *, __u64 *, size_t); #define nilfs_set_bit_atomic ext2_set_bit_atomic #define nilfs_clear_bit_atomic ext2_clear_bit_atomic -#define nilfs_find_next_zero_bit ext2_find_next_zero_bit +#define nilfs_find_next_zero_bit find_next_zero_bit_le /* * persistent object allocator cache diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c index 3ee67c67cc52..4723f04e9b12 100644 --- a/fs/nilfs2/bmap.c +++ b/fs/nilfs2/bmap.c @@ -25,7 +25,6 @@ #include <linux/errno.h> #include "nilfs.h" #include "bmap.h" -#include "sb.h" #include "btree.h" #include "direct.h" #include "btnode.h" @@ -425,17 +424,6 @@ int nilfs_bmap_test_and_clear_dirty(struct nilfs_bmap *bmap) /* * Internal use only */ - -void nilfs_bmap_add_blocks(const struct nilfs_bmap *bmap, int n) -{ - inode_add_bytes(bmap->b_inode, (1 << bmap->b_inode->i_blkbits) * n); -} - -void nilfs_bmap_sub_blocks(const struct nilfs_bmap *bmap, int n) -{ - inode_sub_bytes(bmap->b_inode, (1 << bmap->b_inode->i_blkbits) * n); -} - __u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *bmap, const struct buffer_head *bh) { diff --git a/fs/nilfs2/bmap.h b/fs/nilfs2/bmap.h index bde1c0aa2e15..40d9f453d31c 100644 --- a/fs/nilfs2/bmap.h +++ b/fs/nilfs2/bmap.h @@ -240,9 +240,6 @@ __u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *, __u64 nilfs_bmap_find_target_seq(const struct nilfs_bmap *, __u64); __u64 nilfs_bmap_find_target_in_group(const struct nilfs_bmap *); -void nilfs_bmap_add_blocks(const struct nilfs_bmap *, int); -void nilfs_bmap_sub_blocks(const struct nilfs_bmap *, int); - /* Assume that bmap semaphore is locked. */ static inline int nilfs_bmap_dirty(const struct nilfs_bmap *bmap) diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c index 85f7baa15f5d..609cd223eea8 100644 --- a/fs/nilfs2/btnode.c +++ b/fs/nilfs2/btnode.c @@ -34,15 +34,10 @@ #include "page.h" #include "btnode.h" - -static const struct address_space_operations def_btnode_aops = { - .sync_page = block_sync_page, -}; - void nilfs_btnode_cache_init(struct address_space *btnc, struct backing_dev_info *bdi) { - nilfs_mapping_init(btnc, bdi, &def_btnode_aops); + nilfs_mapping_init(btnc, bdi); } void nilfs_btnode_cache_clear(struct address_space *btnc) diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c index 300c2bc00c3f..d451ae0e0bf3 100644 --- a/fs/nilfs2/btree.c +++ b/fs/nilfs2/btree.c @@ -1174,7 +1174,7 @@ static int nilfs_btree_insert(struct nilfs_bmap *btree, __u64 key, __u64 ptr) if (ret < 0) goto out; nilfs_btree_commit_insert(btree, path, level, key, ptr); - nilfs_bmap_add_blocks(btree, stats.bs_nblocks); + nilfs_inode_add_blocks(btree->b_inode, stats.bs_nblocks); out: nilfs_btree_free_path(path); @@ -1511,7 +1511,7 @@ static int nilfs_btree_delete(struct nilfs_bmap *btree, __u64 key) if (ret < 0) goto out; nilfs_btree_commit_delete(btree, path, level, dat); - nilfs_bmap_sub_blocks(btree, stats.bs_nblocks); + nilfs_inode_sub_blocks(btree->b_inode, stats.bs_nblocks); out: nilfs_btree_free_path(path); @@ -1776,7 +1776,7 @@ int nilfs_btree_convert_and_insert(struct nilfs_bmap *btree, return ret; nilfs_btree_commit_convert_and_insert(btree, key, ptr, keys, ptrs, n, di, ni, bh); - nilfs_bmap_add_blocks(btree, stats.bs_nblocks); + nilfs_inode_add_blocks(btree->b_inode, stats.bs_nblocks); return 0; } diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c index 9d45773b79e6..3a1923943b14 100644 --- a/fs/nilfs2/dir.c +++ b/fs/nilfs2/dir.c @@ -440,7 +440,6 @@ void nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de, nilfs_commit_chunk(page, mapping, from, to); nilfs_put_page(page); dir->i_mtime = dir->i_ctime = CURRENT_TIME; -/* NILFS_I(dir)->i_flags &= ~NILFS_BTREE_FL; */ } /* @@ -531,7 +530,6 @@ got_it: nilfs_set_de_type(de, inode); nilfs_commit_chunk(page, page->mapping, from, to); dir->i_mtime = dir->i_ctime = CURRENT_TIME; -/* NILFS_I(dir)->i_flags &= ~NILFS_BTREE_FL; */ nilfs_mark_inode_dirty(dir); /* OFFSET_CACHE */ out_put: @@ -579,7 +577,6 @@ int nilfs_delete_entry(struct nilfs_dir_entry *dir, struct page *page) dir->inode = 0; nilfs_commit_chunk(page, mapping, from, to); inode->i_ctime = inode->i_mtime = CURRENT_TIME; -/* NILFS_I(inode)->i_flags &= ~NILFS_BTREE_FL; */ out: nilfs_put_page(page); return err; @@ -684,7 +681,7 @@ const struct file_operations nilfs_dir_operations = { .readdir = nilfs_readdir, .unlocked_ioctl = nilfs_ioctl, #ifdef CONFIG_COMPAT - .compat_ioctl = nilfs_ioctl, + .compat_ioctl = nilfs_compat_ioctl, #endif /* CONFIG_COMPAT */ .fsync = nilfs_sync_file, diff --git a/fs/nilfs2/direct.c b/fs/nilfs2/direct.c index 324d80c57518..82f4865e86dd 100644 --- a/fs/nilfs2/direct.c +++ b/fs/nilfs2/direct.c @@ -146,7 +146,7 @@ static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr) if (NILFS_BMAP_USE_VBN(bmap)) nilfs_bmap_set_target_v(bmap, key, req.bpr_ptr); - nilfs_bmap_add_blocks(bmap, 1); + nilfs_inode_add_blocks(bmap->b_inode, 1); } return ret; } @@ -168,7 +168,7 @@ static int nilfs_direct_delete(struct nilfs_bmap *bmap, __u64 key) if (!ret) { nilfs_bmap_commit_end_ptr(bmap, &req, dat); nilfs_direct_set_ptr(bmap, key, NILFS_BMAP_INVALID_PTR); - nilfs_bmap_sub_blocks(bmap, 1); + nilfs_inode_sub_blocks(bmap->b_inode, 1); } return ret; } diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c index 2f560c9fb808..93589fccdd97 100644 --- a/fs/nilfs2/file.c +++ b/fs/nilfs2/file.c @@ -59,7 +59,7 @@ static int nilfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) struct nilfs_transaction_info ti; int ret; - if (unlikely(nilfs_near_disk_full(NILFS_SB(inode->i_sb)->s_nilfs))) + if (unlikely(nilfs_near_disk_full(inode->i_sb->s_fs_info))) return VM_FAULT_SIGBUS; /* -ENOSPC */ lock_page(page); @@ -142,7 +142,7 @@ const struct file_operations nilfs_file_operations = { .aio_write = generic_file_aio_write, .unlocked_ioctl = nilfs_ioctl, #ifdef CONFIG_COMPAT - .compat_ioctl = nilfs_ioctl, + .compat_ioctl = nilfs_compat_ioctl, #endif /* CONFIG_COMPAT */ .mmap = nilfs_file_mmap, .open = generic_file_open, diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c index caf9a6a3fb54..1c2a3e23f8b2 100644 --- a/fs/nilfs2/gcinode.c +++ b/fs/nilfs2/gcinode.c @@ -49,7 +49,6 @@ #include "ifile.h" static const struct address_space_operations def_gcinode_aops = { - .sync_page = block_sync_page, }; /* diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index 2fd440d8d6b8..c0aa27490c02 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -41,6 +41,24 @@ struct nilfs_iget_args { int for_gc; }; +void nilfs_inode_add_blocks(struct inode *inode, int n) +{ + struct nilfs_root *root = NILFS_I(inode)->i_root; + + inode_add_bytes(inode, (1 << inode->i_blkbits) * n); + if (root) + atomic_add(n, &root->blocks_count); +} + +void nilfs_inode_sub_blocks(struct inode *inode, int n) +{ + struct nilfs_root *root = NILFS_I(inode)->i_root; + + inode_sub_bytes(inode, (1 << inode->i_blkbits) * n); + if (root) + atomic_sub(n, &root->blocks_count); +} + /** * nilfs_get_block() - get a file block on the filesystem (callback function) * @inode - inode struct of the target file @@ -262,7 +280,6 @@ nilfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, const struct address_space_operations nilfs_aops = { .writepage = nilfs_writepage, .readpage = nilfs_readpage, - .sync_page = block_sync_page, .writepages = nilfs_writepages, .set_page_dirty = nilfs_set_page_dirty, .readpages = nilfs_readpages, @@ -277,7 +294,7 @@ const struct address_space_operations nilfs_aops = { struct inode *nilfs_new_inode(struct inode *dir, int mode) { struct super_block *sb = dir->i_sb; - struct nilfs_sb_info *sbi = NILFS_SB(sb); + struct the_nilfs *nilfs = sb->s_fs_info; struct inode *inode; struct nilfs_inode_info *ii; struct nilfs_root *root; @@ -315,19 +332,16 @@ struct inode *nilfs_new_inode(struct inode *dir, int mode) /* No lock is needed; iget() ensures it. */ } - ii->i_flags = NILFS_I(dir)->i_flags; - if (S_ISLNK(mode)) - ii->i_flags &= ~(NILFS_IMMUTABLE_FL | NILFS_APPEND_FL); - if (!S_ISDIR(mode)) - ii->i_flags &= ~NILFS_DIRSYNC_FL; + ii->i_flags = nilfs_mask_flags( + mode, NILFS_I(dir)->i_flags & NILFS_FL_INHERITED); /* ii->i_file_acl = 0; */ /* ii->i_dir_acl = 0; */ ii->i_dir_start_lookup = 0; nilfs_set_inode_flags(inode); - spin_lock(&sbi->s_next_gen_lock); - inode->i_generation = sbi->s_next_generation++; - spin_unlock(&sbi->s_next_gen_lock); + spin_lock(&nilfs->ns_next_gen_lock); + inode->i_generation = nilfs->ns_next_generation++; + spin_unlock(&nilfs->ns_next_gen_lock); insert_inode_hash(inode); err = nilfs_init_acl(inode, dir); @@ -359,17 +373,15 @@ void nilfs_set_inode_flags(struct inode *inode) inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME | S_DIRSYNC); - if (flags & NILFS_SYNC_FL) + if (flags & FS_SYNC_FL) inode->i_flags |= S_SYNC; - if (flags & NILFS_APPEND_FL) + if (flags & FS_APPEND_FL) inode->i_flags |= S_APPEND; - if (flags & NILFS_IMMUTABLE_FL) + if (flags & FS_IMMUTABLE_FL) inode->i_flags |= S_IMMUTABLE; -#ifndef NILFS_ATIME_DISABLE - if (flags & NILFS_NOATIME_FL) -#endif + if (flags & FS_NOATIME_FL) inode->i_flags |= S_NOATIME; - if (flags & NILFS_DIRSYNC_FL) + if (flags & FS_DIRSYNC_FL) inode->i_flags |= S_DIRSYNC; mapping_set_gfp_mask(inode->i_mapping, mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS); @@ -420,7 +432,7 @@ static int __nilfs_read_inode(struct super_block *sb, struct nilfs_root *root, unsigned long ino, struct inode *inode) { - struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; struct buffer_head *bh; struct nilfs_inode *raw_inode; int err; @@ -707,6 +719,7 @@ void nilfs_evict_inode(struct inode *inode) struct nilfs_transaction_info ti; struct super_block *sb = inode->i_sb; struct nilfs_inode_info *ii = NILFS_I(inode); + int ret; if (inode->i_nlink || !ii->i_root || unlikely(is_bad_inode(inode))) { if (inode->i_data.nrpages) @@ -725,8 +738,9 @@ void nilfs_evict_inode(struct inode *inode) nilfs_mark_inode_dirty(inode); end_writeback(inode); - nilfs_ifile_delete_inode(ii->i_root->ifile, inode->i_ino); - atomic_dec(&ii->i_root->inodes_count); + ret = nilfs_ifile_delete_inode(ii->i_root->ifile, inode->i_ino); + if (!ret) + atomic_dec(&ii->i_root->inodes_count); nilfs_clear_inode(inode); @@ -792,18 +806,18 @@ int nilfs_permission(struct inode *inode, int mask, unsigned int flags) int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh) { - struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb); + struct the_nilfs *nilfs = inode->i_sb->s_fs_info; struct nilfs_inode_info *ii = NILFS_I(inode); int err; - spin_lock(&sbi->s_inode_lock); + spin_lock(&nilfs->ns_inode_lock); if (ii->i_bh == NULL) { - spin_unlock(&sbi->s_inode_lock); + spin_unlock(&nilfs->ns_inode_lock); err = nilfs_ifile_get_inode_block(ii->i_root->ifile, inode->i_ino, pbh); if (unlikely(err)) return err; - spin_lock(&sbi->s_inode_lock); + spin_lock(&nilfs->ns_inode_lock); if (ii->i_bh == NULL) ii->i_bh = *pbh; else { @@ -814,36 +828,36 @@ int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh) *pbh = ii->i_bh; get_bh(*pbh); - spin_unlock(&sbi->s_inode_lock); + spin_unlock(&nilfs->ns_inode_lock); return 0; } int nilfs_inode_dirty(struct inode *inode) { struct nilfs_inode_info *ii = NILFS_I(inode); - struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb); + struct the_nilfs *nilfs = inode->i_sb->s_fs_info; int ret = 0; if (!list_empty(&ii->i_dirty)) { - spin_lock(&sbi->s_inode_lock); + spin_lock(&nilfs->ns_inode_lock); ret = test_bit(NILFS_I_DIRTY, &ii->i_state) || test_bit(NILFS_I_BUSY, &ii->i_state); - spin_unlock(&sbi->s_inode_lock); + spin_unlock(&nilfs->ns_inode_lock); } return ret; } int nilfs_set_file_dirty(struct inode *inode, unsigned nr_dirty) { - struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb); struct nilfs_inode_info *ii = NILFS_I(inode); + struct the_nilfs *nilfs = inode->i_sb->s_fs_info; - atomic_add(nr_dirty, &sbi->s_nilfs->ns_ndirtyblks); + atomic_add(nr_dirty, &nilfs->ns_ndirtyblks); if (test_and_set_bit(NILFS_I_DIRTY, &ii->i_state)) return 0; - spin_lock(&sbi->s_inode_lock); + spin_lock(&nilfs->ns_inode_lock); if (!test_bit(NILFS_I_QUEUED, &ii->i_state) && !test_bit(NILFS_I_BUSY, &ii->i_state)) { /* Because this routine may race with nilfs_dispose_list(), @@ -851,18 +865,18 @@ int nilfs_set_file_dirty(struct inode *inode, unsigned nr_dirty) if (list_empty(&ii->i_dirty) && igrab(inode) == NULL) { /* This will happen when somebody is freeing this inode. */ - nilfs_warning(sbi->s_super, __func__, + nilfs_warning(inode->i_sb, __func__, "cannot get inode (ino=%lu)\n", inode->i_ino); - spin_unlock(&sbi->s_inode_lock); + spin_unlock(&nilfs->ns_inode_lock); return -EINVAL; /* NILFS_I_DIRTY may remain for freeing inode */ } list_del(&ii->i_dirty); - list_add_tail(&ii->i_dirty, &sbi->s_dirty_files); + list_add_tail(&ii->i_dirty, &nilfs->ns_dirty_files); set_bit(NILFS_I_QUEUED, &ii->i_state); } - spin_unlock(&sbi->s_inode_lock); + spin_unlock(&nilfs->ns_inode_lock); return 0; } diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c index 496738963fdb..f2469ba6246b 100644 --- a/fs/nilfs2/ioctl.c +++ b/fs/nilfs2/ioctl.c @@ -26,7 +26,9 @@ #include <linux/capability.h> /* capable() */ #include <linux/uaccess.h> /* copy_from_user(), copy_to_user() */ #include <linux/vmalloc.h> +#include <linux/compat.h> /* compat_ptr() */ #include <linux/mount.h> /* mnt_want_write(), mnt_drop_write() */ +#include <linux/buffer_head.h> #include <linux/nilfs2_fs.h> #include "nilfs.h" #include "segment.h" @@ -97,11 +99,74 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs, return ret; } +static int nilfs_ioctl_getflags(struct inode *inode, void __user *argp) +{ + unsigned int flags = NILFS_I(inode)->i_flags & FS_FL_USER_VISIBLE; + + return put_user(flags, (int __user *)argp); +} + +static int nilfs_ioctl_setflags(struct inode *inode, struct file *filp, + void __user *argp) +{ + struct nilfs_transaction_info ti; + unsigned int flags, oldflags; + int ret; + + if (!inode_owner_or_capable(inode)) + return -EACCES; + + if (get_user(flags, (int __user *)argp)) + return -EFAULT; + + ret = mnt_want_write(filp->f_path.mnt); + if (ret) + return ret; + + flags = nilfs_mask_flags(inode->i_mode, flags); + + mutex_lock(&inode->i_mutex); + + oldflags = NILFS_I(inode)->i_flags; + + /* + * The IMMUTABLE and APPEND_ONLY flags can only be changed by the + * relevant capability. + */ + ret = -EPERM; + if (((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) && + !capable(CAP_LINUX_IMMUTABLE)) + goto out; + + ret = nilfs_transaction_begin(inode->i_sb, &ti, 0); + if (ret) + goto out; + + NILFS_I(inode)->i_flags = (oldflags & ~FS_FL_USER_MODIFIABLE) | + (flags & FS_FL_USER_MODIFIABLE); + + nilfs_set_inode_flags(inode); + inode->i_ctime = CURRENT_TIME; + if (IS_SYNC(inode)) + nilfs_set_transaction_flag(NILFS_TI_SYNC); + + nilfs_mark_inode_dirty(inode); + ret = nilfs_transaction_commit(inode->i_sb); +out: + mutex_unlock(&inode->i_mutex); + mnt_drop_write(filp->f_path.mnt); + return ret; +} + +static int nilfs_ioctl_getversion(struct inode *inode, void __user *argp) +{ + return put_user(inode->i_generation, (int __user *)argp); +} + static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) { - struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs; - struct inode *cpfile = nilfs->ns_cpfile; + struct the_nilfs *nilfs = inode->i_sb->s_fs_info; struct nilfs_transaction_info ti; struct nilfs_cpmode cpmode; int ret; @@ -121,7 +186,7 @@ static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp, nilfs_transaction_begin(inode->i_sb, &ti, 0); ret = nilfs_cpfile_change_cpmode( - cpfile, cpmode.cm_cno, cpmode.cm_mode); + nilfs->ns_cpfile, cpmode.cm_cno, cpmode.cm_mode); if (unlikely(ret < 0)) nilfs_transaction_abort(inode->i_sb); else @@ -137,7 +202,7 @@ static int nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) { - struct inode *cpfile = NILFS_SB(inode->i_sb)->s_nilfs->ns_cpfile; + struct the_nilfs *nilfs = inode->i_sb->s_fs_info; struct nilfs_transaction_info ti; __u64 cno; int ret; @@ -154,7 +219,7 @@ nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp, goto out; nilfs_transaction_begin(inode->i_sb, &ti, 0); - ret = nilfs_cpfile_delete_checkpoint(cpfile, cno); + ret = nilfs_cpfile_delete_checkpoint(nilfs->ns_cpfile, cno); if (unlikely(ret < 0)) nilfs_transaction_abort(inode->i_sb); else @@ -180,7 +245,7 @@ nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) { - struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs; + struct the_nilfs *nilfs = inode->i_sb->s_fs_info; struct nilfs_cpstat cpstat; int ret; @@ -211,7 +276,7 @@ nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) { - struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs; + struct the_nilfs *nilfs = inode->i_sb->s_fs_info; struct nilfs_sustat sustat; int ret; @@ -267,7 +332,7 @@ nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, __u64 *posp, int flags, static int nilfs_ioctl_get_bdescs(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) { - struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs; + struct the_nilfs *nilfs = inode->i_sb->s_fs_info; struct nilfs_argv argv; int ret; @@ -336,7 +401,7 @@ static int nilfs_ioctl_move_blocks(struct super_block *sb, struct nilfs_argv *argv, void *buf) { size_t nmembs = argv->v_nmembs; - struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; struct inode *inode; struct nilfs_vdesc *vdesc; struct buffer_head *bh, *n; @@ -550,7 +615,7 @@ static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp, ret = PTR_ERR(kbufs[4]); goto out; } - nilfs = NILFS_SB(inode->i_sb)->s_nilfs; + nilfs = inode->i_sb->s_fs_info; for (n = 0; n < 4; n++) { ret = -EINVAL; @@ -623,7 +688,7 @@ static int nilfs_ioctl_sync(struct inode *inode, struct file *filp, return ret; if (argp != NULL) { - nilfs = NILFS_SB(inode->i_sb)->s_nilfs; + nilfs = inode->i_sb->s_fs_info; down_read(&nilfs->ns_segctor_sem); cno = nilfs->ns_cno - 1; up_read(&nilfs->ns_segctor_sem); @@ -641,7 +706,7 @@ static int nilfs_ioctl_get_info(struct inode *inode, struct file *filp, void *, size_t, size_t)) { - struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs; + struct the_nilfs *nilfs = inode->i_sb->s_fs_info; struct nilfs_argv argv; int ret; @@ -666,6 +731,12 @@ long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) void __user *argp = (void __user *)arg; switch (cmd) { + case FS_IOC_GETFLAGS: + return nilfs_ioctl_getflags(inode, argp); + case FS_IOC_SETFLAGS: + return nilfs_ioctl_setflags(inode, filp, argp); + case FS_IOC_GETVERSION: + return nilfs_ioctl_getversion(inode, argp); case NILFS_IOCTL_CHANGE_CPMODE: return nilfs_ioctl_change_cpmode(inode, filp, cmd, argp); case NILFS_IOCTL_DELETE_CHECKPOINT: @@ -696,3 +767,23 @@ long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return -ENOTTY; } } + +#ifdef CONFIG_COMPAT +long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +{ + switch (cmd) { + case FS_IOC32_GETFLAGS: + cmd = FS_IOC_GETFLAGS; + break; + case FS_IOC32_SETFLAGS: + cmd = FS_IOC_SETFLAGS; + break; + case FS_IOC32_GETVERSION: + cmd = FS_IOC_GETVERSION; + break; + default: + return -ENOIOCTLCMD; + } + return nilfs_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); +} +#endif diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index a0babd2bff6a..a649b05f7069 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -399,7 +399,6 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc) static const struct address_space_operations def_mdt_aops = { .writepage = nilfs_mdt_write_page, - .sync_page = block_sync_page, }; static const struct inode_operations def_mdt_iops; @@ -438,10 +437,6 @@ void nilfs_mdt_set_entry_size(struct inode *inode, unsigned entry_size, mi->mi_first_entry_offset = DIV_ROUND_UP(header_size, entry_size); } -static const struct address_space_operations shadow_map_aops = { - .sync_page = block_sync_page, -}; - /** * nilfs_mdt_setup_shadow_map - setup shadow map and bind it to metadata file * @inode: inode of the metadata file @@ -455,9 +450,9 @@ int nilfs_mdt_setup_shadow_map(struct inode *inode, INIT_LIST_HEAD(&shadow->frozen_buffers); address_space_init_once(&shadow->frozen_data); - nilfs_mapping_init(&shadow->frozen_data, bdi, &shadow_map_aops); + nilfs_mapping_init(&shadow->frozen_data, bdi); address_space_init_once(&shadow->frozen_btnodes); - nilfs_mapping_init(&shadow->frozen_btnodes, bdi, &shadow_map_aops); + nilfs_mapping_init(&shadow->frozen_btnodes, bdi); mi->mi_shadow = shadow; return 0; } diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h index b13734bf3521..ed68563ec708 100644 --- a/fs/nilfs2/mdt.h +++ b/fs/nilfs2/mdt.h @@ -66,7 +66,7 @@ static inline struct nilfs_mdt_info *NILFS_MDT(const struct inode *inode) static inline struct the_nilfs *NILFS_I_NILFS(struct inode *inode) { - return NILFS_SB(inode->i_sb)->s_nilfs; + return inode->i_sb->s_fs_info; } /* Default GFP flags using highmem */ diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c index 161791d26458..546849b3e88f 100644 --- a/fs/nilfs2/namei.c +++ b/fs/nilfs2/namei.c @@ -482,7 +482,7 @@ static struct dentry *nilfs_get_dentry(struct super_block *sb, u64 cno, if (ino < NILFS_FIRST_INO(sb) && ino != NILFS_ROOT_INO) return ERR_PTR(-ESTALE); - root = nilfs_lookup_root(NILFS_SB(sb)->s_nilfs, cno); + root = nilfs_lookup_root(sb->s_fs_info, cno); if (!root) return ERR_PTR(-ESTALE); diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h index 777e8fd04304..856e8e4e0b74 100644 --- a/fs/nilfs2/nilfs.h +++ b/fs/nilfs2/nilfs.h @@ -30,7 +30,6 @@ #include <linux/blkdev.h> #include <linux/nilfs2_fs.h> #include "the_nilfs.h" -#include "sb.h" #include "bmap.h" /* @@ -122,7 +121,7 @@ enum { #define NILFS_SYS_INO_BITS \ ((unsigned int)(1 << NILFS_ROOT_INO) | NILFS_MDT_INO_BITS) -#define NILFS_FIRST_INO(sb) (NILFS_SB(sb)->s_nilfs->ns_first_ino) +#define NILFS_FIRST_INO(sb) (((struct the_nilfs *)sb->s_fs_info)->ns_first_ino) #define NILFS_MDT_INODE(sb, ino) \ ((ino) < NILFS_FIRST_INO(sb) && (NILFS_MDT_INO_BITS & (1 << (ino)))) @@ -212,6 +211,23 @@ static inline int nilfs_init_acl(struct inode *inode, struct inode *dir) #define NILFS_ATIME_DISABLE +/* Flags that should be inherited by new inodes from their parent. */ +#define NILFS_FL_INHERITED \ + (FS_SECRM_FL | FS_UNRM_FL | FS_COMPR_FL | FS_SYNC_FL | \ + FS_IMMUTABLE_FL | FS_APPEND_FL | FS_NODUMP_FL | FS_NOATIME_FL |\ + FS_COMPRBLK_FL | FS_NOCOMP_FL | FS_NOTAIL_FL | FS_DIRSYNC_FL) + +/* Mask out flags that are inappropriate for the given type of inode. */ +static inline __u32 nilfs_mask_flags(umode_t mode, __u32 flags) +{ + if (S_ISDIR(mode)) + return flags; + else if (S_ISREG(mode)) + return flags & ~(FS_DIRSYNC_FL | FS_TOPDIR_FL); + else + return flags & (FS_NODUMP_FL | FS_NOATIME_FL); +} + /* dir.c */ extern int nilfs_add_link(struct dentry *, struct inode *); extern ino_t nilfs_inode_by_name(struct inode *, const struct qstr *); @@ -229,10 +245,13 @@ extern int nilfs_sync_file(struct file *, int); /* ioctl.c */ long nilfs_ioctl(struct file *, unsigned int, unsigned long); +long nilfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *, struct nilfs_argv *, void **); /* inode.c */ +void nilfs_inode_add_blocks(struct inode *inode, int n); +void nilfs_inode_sub_blocks(struct inode *inode, int n); extern struct inode *nilfs_new_inode(struct inode *, int); extern void nilfs_free_inode(struct inode *); extern int nilfs_get_block(struct inode *, sector_t, struct buffer_head *, int); @@ -275,11 +294,11 @@ extern int nilfs_check_feature_compatibility(struct super_block *, struct nilfs_super_block *); extern void nilfs_set_log_cursor(struct nilfs_super_block *, struct the_nilfs *); -extern struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *, - int flip); -extern int nilfs_commit_super(struct nilfs_sb_info *, int); -extern int nilfs_cleanup_super(struct nilfs_sb_info *); -int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt, +struct nilfs_super_block **nilfs_prepare_super(struct super_block *sb, + int flip); +int nilfs_commit_super(struct super_block *sb, int flag); +int nilfs_cleanup_super(struct super_block *sb); +int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt, struct nilfs_root **root); int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno); diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c index a585b35fd6bc..4d2a1ee0eb47 100644 --- a/fs/nilfs2/page.c +++ b/fs/nilfs2/page.c @@ -493,15 +493,14 @@ unsigned nilfs_page_count_clean_buffers(struct page *page, } void nilfs_mapping_init(struct address_space *mapping, - struct backing_dev_info *bdi, - const struct address_space_operations *aops) + struct backing_dev_info *bdi) { mapping->host = NULL; mapping->flags = 0; mapping_set_gfp_mask(mapping, GFP_NOFS); mapping->assoc_mapping = NULL; mapping->backing_dev_info = bdi; - mapping->a_ops = aops; + mapping->a_ops = NULL; } /* diff --git a/fs/nilfs2/page.h b/fs/nilfs2/page.h index 2a00953ebd5f..f06b79ad7493 100644 --- a/fs/nilfs2/page.h +++ b/fs/nilfs2/page.h @@ -62,8 +62,7 @@ int nilfs_copy_dirty_pages(struct address_space *, struct address_space *); void nilfs_copy_back_pages(struct address_space *, struct address_space *); void nilfs_clear_dirty_pages(struct address_space *); void nilfs_mapping_init(struct address_space *mapping, - struct backing_dev_info *bdi, - const struct address_space_operations *aops); + struct backing_dev_info *bdi); unsigned nilfs_page_count_clean_buffers(struct page *, unsigned, unsigned); unsigned long nilfs_find_uncommitted_extent(struct inode *inode, sector_t start_blk, diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c index 3dfcd3b7d389..ba4a64518f38 100644 --- a/fs/nilfs2/recovery.c +++ b/fs/nilfs2/recovery.c @@ -425,7 +425,7 @@ void nilfs_dispose_segment_list(struct list_head *head) } static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs, - struct nilfs_sb_info *sbi, + struct super_block *sb, struct nilfs_recovery_info *ri) { struct list_head *head = &ri->ri_used_segments; @@ -501,7 +501,7 @@ static int nilfs_recovery_copy_block(struct the_nilfs *nilfs, } static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs, - struct nilfs_sb_info *sbi, + struct super_block *sb, struct nilfs_root *root, struct list_head *head, unsigned long *nr_salvaged_blocks) @@ -514,7 +514,7 @@ static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs, int err = 0, err2 = 0; list_for_each_entry_safe(rb, n, head, list) { - inode = nilfs_iget(sbi->s_super, root, rb->ino); + inode = nilfs_iget(sb, root, rb->ino); if (IS_ERR(inode)) { err = PTR_ERR(inode); inode = NULL; @@ -572,11 +572,11 @@ static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs, * nilfs_do_roll_forward - salvage logical segments newer than the latest * checkpoint * @nilfs: nilfs object - * @sbi: nilfs_sb_info + * @sb: super block instance * @ri: pointer to a nilfs_recovery_info */ static int nilfs_do_roll_forward(struct the_nilfs *nilfs, - struct nilfs_sb_info *sbi, + struct super_block *sb, struct nilfs_root *root, struct nilfs_recovery_info *ri) { @@ -648,7 +648,7 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs, goto failed; if (flags & NILFS_SS_LOGEND) { err = nilfs_recover_dsync_blocks( - nilfs, sbi, root, &dsync_blocks, + nilfs, sb, root, &dsync_blocks, &nsalvaged_blocks); if (unlikely(err)) goto failed; @@ -681,7 +681,7 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs, if (nsalvaged_blocks) { printk(KERN_INFO "NILFS (device %s): salvaged %lu blocks\n", - sbi->s_super->s_id, nsalvaged_blocks); + sb->s_id, nsalvaged_blocks); ri->ri_need_recovery = NILFS_RECOVERY_ROLLFORWARD_DONE; } out: @@ -695,7 +695,7 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs, printk(KERN_ERR "NILFS (device %s): Error roll-forwarding " "(err=%d, pseg block=%llu). ", - sbi->s_super->s_id, err, (unsigned long long)pseg_start); + sb->s_id, err, (unsigned long long)pseg_start); goto out; } @@ -724,7 +724,7 @@ static void nilfs_finish_roll_forward(struct the_nilfs *nilfs, /** * nilfs_salvage_orphan_logs - salvage logs written after the latest checkpoint * @nilfs: nilfs object - * @sbi: nilfs_sb_info + * @sb: super block instance * @ri: pointer to a nilfs_recovery_info struct to store search results. * * Return Value: On success, 0 is returned. On error, one of the following @@ -741,7 +741,7 @@ static void nilfs_finish_roll_forward(struct the_nilfs *nilfs, * %-ENOMEM - Insufficient memory available. */ int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs, - struct nilfs_sb_info *sbi, + struct super_block *sb, struct nilfs_recovery_info *ri) { struct nilfs_root *root; @@ -750,32 +750,32 @@ int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs, if (ri->ri_lsegs_start == 0 || ri->ri_lsegs_end == 0) return 0; - err = nilfs_attach_checkpoint(sbi, ri->ri_cno, true, &root); + err = nilfs_attach_checkpoint(sb, ri->ri_cno, true, &root); if (unlikely(err)) { printk(KERN_ERR "NILFS: error loading the latest checkpoint.\n"); return err; } - err = nilfs_do_roll_forward(nilfs, sbi, root, ri); + err = nilfs_do_roll_forward(nilfs, sb, root, ri); if (unlikely(err)) goto failed; if (ri->ri_need_recovery == NILFS_RECOVERY_ROLLFORWARD_DONE) { - err = nilfs_prepare_segment_for_recovery(nilfs, sbi, ri); + err = nilfs_prepare_segment_for_recovery(nilfs, sb, ri); if (unlikely(err)) { printk(KERN_ERR "NILFS: Error preparing segments for " "recovery.\n"); goto failed; } - err = nilfs_attach_segment_constructor(sbi, root); + err = nilfs_attach_log_writer(sb, root); if (unlikely(err)) goto failed; set_nilfs_discontinued(nilfs); - err = nilfs_construct_segment(sbi->s_super); - nilfs_detach_segment_constructor(sbi); + err = nilfs_construct_segment(sb); + nilfs_detach_log_writer(sb); if (unlikely(err)) { printk(KERN_ERR "NILFS: Oops! recovery failed. " diff --git a/fs/nilfs2/sb.h b/fs/nilfs2/sb.h deleted file mode 100644 index 7a17715f215f..000000000000 --- a/fs/nilfs2/sb.h +++ /dev/null @@ -1,85 +0,0 @@ -/* - * sb.h - NILFS on-memory super block structure. - * - * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - * Written by Ryusuke Konishi <ryusuke@osrg.net> - * - */ - -#ifndef _NILFS_SB -#define _NILFS_SB - -#include <linux/types.h> -#include <linux/fs.h> - -struct the_nilfs; -struct nilfs_sc_info; - -/* - * NILFS super-block data in memory - */ -struct nilfs_sb_info { - /* Mount options */ - unsigned long s_mount_opt; - uid_t s_resuid; - gid_t s_resgid; - - unsigned long s_interval; /* construction interval */ - unsigned long s_watermark; /* threshold of data amount - for the segment construction */ - - /* Fundamental members */ - struct super_block *s_super; /* reverse pointer to super_block */ - struct the_nilfs *s_nilfs; - - /* Segment constructor */ - struct list_head s_dirty_files; /* dirty files list */ - struct nilfs_sc_info *s_sc_info; /* segment constructor info */ - spinlock_t s_inode_lock; /* Lock for the nilfs inode. - It covers s_dirty_files list */ - - /* Inode allocator */ - spinlock_t s_next_gen_lock; - u32 s_next_generation; -}; - -static inline struct nilfs_sb_info *NILFS_SB(struct super_block *sb) -{ - return sb->s_fs_info; -} - -static inline struct nilfs_sc_info *NILFS_SC(struct nilfs_sb_info *sbi) -{ - return sbi->s_sc_info; -} - -/* - * Bit operations for the mount option - */ -#define nilfs_clear_opt(sbi, opt) \ - do { (sbi)->s_mount_opt &= ~NILFS_MOUNT_##opt; } while (0) -#define nilfs_set_opt(sbi, opt) \ - do { (sbi)->s_mount_opt |= NILFS_MOUNT_##opt; } while (0) -#define nilfs_test_opt(sbi, opt) ((sbi)->s_mount_opt & NILFS_MOUNT_##opt) -#define nilfs_write_opt(sbi, mask, opt) \ - do { (sbi)->s_mount_opt = \ - (((sbi)->s_mount_opt & ~NILFS_MOUNT_##mask) | \ - NILFS_MOUNT_##opt); \ - } while (0) - -#endif /* _NILFS_SB */ diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c index 0f83e93935b2..2853ff20f85a 100644 --- a/fs/nilfs2/segbuf.c +++ b/fs/nilfs2/segbuf.c @@ -509,7 +509,7 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf, * Last BIO is always sent through the following * submission. */ - rw |= REQ_SYNC | REQ_UNPLUG; + rw |= REQ_SYNC; res = nilfs_segbuf_submit_bio(segbuf, &wi, rw); } diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index 2de9f636792a..afe4f2183454 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -104,8 +104,7 @@ struct nilfs_sc_operations { static void nilfs_segctor_start_timer(struct nilfs_sc_info *); static void nilfs_segctor_do_flush(struct nilfs_sc_info *, int); static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *); -static void nilfs_dispose_list(struct nilfs_sb_info *, struct list_head *, - int); +static void nilfs_dispose_list(struct the_nilfs *, struct list_head *, int); #define nilfs_cnt32_gt(a, b) \ (typecheck(__u32, a) && typecheck(__u32, b) && \ @@ -182,7 +181,6 @@ int nilfs_transaction_begin(struct super_block *sb, struct nilfs_transaction_info *ti, int vacancy_check) { - struct nilfs_sb_info *sbi; struct the_nilfs *nilfs; int ret = nilfs_prepare_segment_lock(ti); @@ -193,8 +191,7 @@ int nilfs_transaction_begin(struct super_block *sb, vfs_check_frozen(sb, SB_FREEZE_WRITE); - sbi = NILFS_SB(sb); - nilfs = sbi->s_nilfs; + nilfs = sb->s_fs_info; down_read(&nilfs->ns_segctor_sem); if (vacancy_check && nilfs_near_disk_full(nilfs)) { up_read(&nilfs->ns_segctor_sem); @@ -225,8 +222,7 @@ int nilfs_transaction_begin(struct super_block *sb, int nilfs_transaction_commit(struct super_block *sb) { struct nilfs_transaction_info *ti = current->journal_info; - struct nilfs_sb_info *sbi; - struct nilfs_sc_info *sci; + struct the_nilfs *nilfs = sb->s_fs_info; int err = 0; BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC); @@ -235,16 +231,15 @@ int nilfs_transaction_commit(struct super_block *sb) ti->ti_count--; return 0; } - sbi = NILFS_SB(sb); - sci = NILFS_SC(sbi); - if (sci != NULL) { + if (nilfs->ns_writer) { + struct nilfs_sc_info *sci = nilfs->ns_writer; + if (ti->ti_flags & NILFS_TI_COMMIT) nilfs_segctor_start_timer(sci); - if (atomic_read(&sbi->s_nilfs->ns_ndirtyblks) > - sci->sc_watermark) + if (atomic_read(&nilfs->ns_ndirtyblks) > sci->sc_watermark) nilfs_segctor_do_flush(sci, 0); } - up_read(&sbi->s_nilfs->ns_segctor_sem); + up_read(&nilfs->ns_segctor_sem); current->journal_info = ti->ti_save; if (ti->ti_flags & NILFS_TI_SYNC) @@ -257,13 +252,14 @@ int nilfs_transaction_commit(struct super_block *sb) void nilfs_transaction_abort(struct super_block *sb) { struct nilfs_transaction_info *ti = current->journal_info; + struct the_nilfs *nilfs = sb->s_fs_info; BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC); if (ti->ti_count > 0) { ti->ti_count--; return; } - up_read(&NILFS_SB(sb)->s_nilfs->ns_segctor_sem); + up_read(&nilfs->ns_segctor_sem); current->journal_info = ti->ti_save; if (ti->ti_flags & NILFS_TI_DYNAMIC_ALLOC) @@ -272,9 +268,8 @@ void nilfs_transaction_abort(struct super_block *sb) void nilfs_relax_pressure_in_lock(struct super_block *sb) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); - struct nilfs_sc_info *sci = NILFS_SC(sbi); - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; + struct nilfs_sc_info *sci = nilfs->ns_writer; if (!sci || !sci->sc_flush_request) return; @@ -294,11 +289,13 @@ void nilfs_relax_pressure_in_lock(struct super_block *sb) downgrade_write(&nilfs->ns_segctor_sem); } -static void nilfs_transaction_lock(struct nilfs_sb_info *sbi, +static void nilfs_transaction_lock(struct super_block *sb, struct nilfs_transaction_info *ti, int gcflag) { struct nilfs_transaction_info *cur_ti = current->journal_info; + struct the_nilfs *nilfs = sb->s_fs_info; + struct nilfs_sc_info *sci = nilfs->ns_writer; WARN_ON(cur_ti); ti->ti_flags = NILFS_TI_WRITER; @@ -309,30 +306,31 @@ static void nilfs_transaction_lock(struct nilfs_sb_info *sbi, current->journal_info = ti; for (;;) { - down_write(&sbi->s_nilfs->ns_segctor_sem); - if (!test_bit(NILFS_SC_PRIOR_FLUSH, &NILFS_SC(sbi)->sc_flags)) + down_write(&nilfs->ns_segctor_sem); + if (!test_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags)) break; - nilfs_segctor_do_immediate_flush(NILFS_SC(sbi)); + nilfs_segctor_do_immediate_flush(sci); - up_write(&sbi->s_nilfs->ns_segctor_sem); + up_write(&nilfs->ns_segctor_sem); yield(); } if (gcflag) ti->ti_flags |= NILFS_TI_GC; } -static void nilfs_transaction_unlock(struct nilfs_sb_info *sbi) +static void nilfs_transaction_unlock(struct super_block *sb) { struct nilfs_transaction_info *ti = current->journal_info; + struct the_nilfs *nilfs = sb->s_fs_info; BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC); BUG_ON(ti->ti_count > 0); - up_write(&sbi->s_nilfs->ns_segctor_sem); + up_write(&nilfs->ns_segctor_sem); current->journal_info = ti->ti_save; if (!list_empty(&ti->ti_garbage)) - nilfs_dispose_list(sbi, &ti->ti_garbage, 0); + nilfs_dispose_list(nilfs, &ti->ti_garbage, 0); } static void *nilfs_segctor_map_segsum_entry(struct nilfs_sc_info *sci, @@ -714,7 +712,7 @@ static void nilfs_lookup_dirty_node_buffers(struct inode *inode, } } -static void nilfs_dispose_list(struct nilfs_sb_info *sbi, +static void nilfs_dispose_list(struct the_nilfs *nilfs, struct list_head *head, int force) { struct nilfs_inode_info *ii, *n; @@ -722,7 +720,7 @@ static void nilfs_dispose_list(struct nilfs_sb_info *sbi, unsigned nv = 0; while (!list_empty(head)) { - spin_lock(&sbi->s_inode_lock); + spin_lock(&nilfs->ns_inode_lock); list_for_each_entry_safe(ii, n, head, i_dirty) { list_del_init(&ii->i_dirty); if (force) { @@ -733,14 +731,14 @@ static void nilfs_dispose_list(struct nilfs_sb_info *sbi, } else if (test_bit(NILFS_I_DIRTY, &ii->i_state)) { set_bit(NILFS_I_QUEUED, &ii->i_state); list_add_tail(&ii->i_dirty, - &sbi->s_dirty_files); + &nilfs->ns_dirty_files); continue; } ivec[nv++] = ii; if (nv == SC_N_INODEVEC) break; } - spin_unlock(&sbi->s_inode_lock); + spin_unlock(&nilfs->ns_inode_lock); for (pii = ivec; nv > 0; pii++, nv--) iput(&(*pii)->vfs_inode); @@ -773,24 +771,23 @@ static int nilfs_segctor_clean(struct nilfs_sc_info *sci) static int nilfs_segctor_confirm(struct nilfs_sc_info *sci) { - struct nilfs_sb_info *sbi = sci->sc_sbi; + struct the_nilfs *nilfs = sci->sc_super->s_fs_info; int ret = 0; - if (nilfs_test_metadata_dirty(sbi->s_nilfs, sci->sc_root)) + if (nilfs_test_metadata_dirty(nilfs, sci->sc_root)) set_bit(NILFS_SC_DIRTY, &sci->sc_flags); - spin_lock(&sbi->s_inode_lock); - if (list_empty(&sbi->s_dirty_files) && nilfs_segctor_clean(sci)) + spin_lock(&nilfs->ns_inode_lock); + if (list_empty(&nilfs->ns_dirty_files) && nilfs_segctor_clean(sci)) ret++; - spin_unlock(&sbi->s_inode_lock); + spin_unlock(&nilfs->ns_inode_lock); return ret; } static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci) { - struct nilfs_sb_info *sbi = sci->sc_sbi; - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sci->sc_super->s_fs_info; nilfs_mdt_clear_dirty(sci->sc_root->ifile); nilfs_mdt_clear_dirty(nilfs->ns_cpfile); @@ -800,7 +797,7 @@ static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci) static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci) { - struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs; + struct the_nilfs *nilfs = sci->sc_super->s_fs_info; struct buffer_head *bh_cp; struct nilfs_checkpoint *raw_cp; int err; @@ -824,8 +821,7 @@ static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci) static int nilfs_segctor_fill_in_checkpoint(struct nilfs_sc_info *sci) { - struct nilfs_sb_info *sbi = sci->sc_sbi; - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sci->sc_super->s_fs_info; struct buffer_head *bh_cp; struct nilfs_checkpoint *raw_cp; int err; @@ -1049,8 +1045,7 @@ static int nilfs_segctor_scan_file_dsync(struct nilfs_sc_info *sci, static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode) { - struct nilfs_sb_info *sbi = sci->sc_sbi; - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sci->sc_super->s_fs_info; struct list_head *head; struct nilfs_inode_info *ii; size_t ndone; @@ -1859,7 +1854,7 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) { struct nilfs_segment_buffer *segbuf; struct page *bd_page = NULL, *fs_page = NULL; - struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs; + struct the_nilfs *nilfs = sci->sc_super->s_fs_info; int update_sr = false; list_for_each_entry(segbuf, &sci->sc_write_logs, sb_list) { @@ -1963,30 +1958,30 @@ static int nilfs_segctor_wait(struct nilfs_sc_info *sci) return ret; } -static int nilfs_segctor_check_in_files(struct nilfs_sc_info *sci, - struct nilfs_sb_info *sbi) +static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci, + struct the_nilfs *nilfs) { struct nilfs_inode_info *ii, *n; struct inode *ifile = sci->sc_root->ifile; - spin_lock(&sbi->s_inode_lock); + spin_lock(&nilfs->ns_inode_lock); retry: - list_for_each_entry_safe(ii, n, &sbi->s_dirty_files, i_dirty) { + list_for_each_entry_safe(ii, n, &nilfs->ns_dirty_files, i_dirty) { if (!ii->i_bh) { struct buffer_head *ibh; int err; - spin_unlock(&sbi->s_inode_lock); + spin_unlock(&nilfs->ns_inode_lock); err = nilfs_ifile_get_inode_block( ifile, ii->vfs_inode.i_ino, &ibh); if (unlikely(err)) { - nilfs_warning(sbi->s_super, __func__, + nilfs_warning(sci->sc_super, __func__, "failed to get inode block.\n"); return err; } nilfs_mdt_mark_buffer_dirty(ibh); nilfs_mdt_mark_dirty(ifile); - spin_lock(&sbi->s_inode_lock); + spin_lock(&nilfs->ns_inode_lock); if (likely(!ii->i_bh)) ii->i_bh = ibh; else @@ -1999,18 +1994,18 @@ static int nilfs_segctor_check_in_files(struct nilfs_sc_info *sci, list_del(&ii->i_dirty); list_add_tail(&ii->i_dirty, &sci->sc_dirty_files); } - spin_unlock(&sbi->s_inode_lock); + spin_unlock(&nilfs->ns_inode_lock); return 0; } -static void nilfs_segctor_check_out_files(struct nilfs_sc_info *sci, - struct nilfs_sb_info *sbi) +static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci, + struct the_nilfs *nilfs) { struct nilfs_transaction_info *ti = current->journal_info; struct nilfs_inode_info *ii, *n; - spin_lock(&sbi->s_inode_lock); + spin_lock(&nilfs->ns_inode_lock); list_for_each_entry_safe(ii, n, &sci->sc_dirty_files, i_dirty) { if (!test_and_clear_bit(NILFS_I_UPDATED, &ii->i_state) || test_bit(NILFS_I_DIRTY, &ii->i_state)) @@ -2022,7 +2017,7 @@ static void nilfs_segctor_check_out_files(struct nilfs_sc_info *sci, list_del(&ii->i_dirty); list_add_tail(&ii->i_dirty, &ti->ti_garbage); } - spin_unlock(&sbi->s_inode_lock); + spin_unlock(&nilfs->ns_inode_lock); } /* @@ -2030,15 +2025,14 @@ static void nilfs_segctor_check_out_files(struct nilfs_sc_info *sci, */ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) { - struct nilfs_sb_info *sbi = sci->sc_sbi; - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sci->sc_super->s_fs_info; struct page *failed_page; int err; sci->sc_stage.scnt = NILFS_ST_INIT; sci->sc_cno = nilfs->ns_cno; - err = nilfs_segctor_check_in_files(sci, sbi); + err = nilfs_segctor_collect_dirty_files(sci, nilfs); if (unlikely(err)) goto out; @@ -2116,7 +2110,7 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) } while (sci->sc_stage.scnt != NILFS_ST_DONE); out: - nilfs_segctor_check_out_files(sci, sbi); + nilfs_segctor_drop_written_files(sci, nilfs); return err; failed_to_write: @@ -2169,8 +2163,8 @@ static void nilfs_segctor_do_flush(struct nilfs_sc_info *sci, int bn) */ void nilfs_flush_segment(struct super_block *sb, ino_t ino) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); - struct nilfs_sc_info *sci = NILFS_SC(sbi); + struct the_nilfs *nilfs = sb->s_fs_info; + struct nilfs_sc_info *sci = nilfs->ns_writer; if (!sci || nilfs_doing_construction()) return; @@ -2259,8 +2253,8 @@ static void nilfs_segctor_wakeup(struct nilfs_sc_info *sci, int err) */ int nilfs_construct_segment(struct super_block *sb) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); - struct nilfs_sc_info *sci = NILFS_SC(sbi); + struct the_nilfs *nilfs = sb->s_fs_info; + struct nilfs_sc_info *sci = nilfs->ns_writer; struct nilfs_transaction_info *ti; int err; @@ -2297,8 +2291,8 @@ int nilfs_construct_segment(struct super_block *sb) int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode, loff_t start, loff_t end) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); - struct nilfs_sc_info *sci = NILFS_SC(sbi); + struct the_nilfs *nilfs = sb->s_fs_info; + struct nilfs_sc_info *sci = nilfs->ns_writer; struct nilfs_inode_info *ii; struct nilfs_transaction_info ti; int err = 0; @@ -2306,33 +2300,33 @@ int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode, if (!sci) return -EROFS; - nilfs_transaction_lock(sbi, &ti, 0); + nilfs_transaction_lock(sb, &ti, 0); ii = NILFS_I(inode); if (test_bit(NILFS_I_INODE_DIRTY, &ii->i_state) || - nilfs_test_opt(sbi, STRICT_ORDER) || + nilfs_test_opt(nilfs, STRICT_ORDER) || test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) || - nilfs_discontinued(sbi->s_nilfs)) { - nilfs_transaction_unlock(sbi); + nilfs_discontinued(nilfs)) { + nilfs_transaction_unlock(sb); err = nilfs_segctor_sync(sci); return err; } - spin_lock(&sbi->s_inode_lock); + spin_lock(&nilfs->ns_inode_lock); if (!test_bit(NILFS_I_QUEUED, &ii->i_state) && !test_bit(NILFS_I_BUSY, &ii->i_state)) { - spin_unlock(&sbi->s_inode_lock); - nilfs_transaction_unlock(sbi); + spin_unlock(&nilfs->ns_inode_lock); + nilfs_transaction_unlock(sb); return 0; } - spin_unlock(&sbi->s_inode_lock); + spin_unlock(&nilfs->ns_inode_lock); sci->sc_dsync_inode = ii; sci->sc_dsync_start = start; sci->sc_dsync_end = end; err = nilfs_segctor_do_construct(sci, SC_LSEG_DSYNC); - nilfs_transaction_unlock(sbi); + nilfs_transaction_unlock(sb); return err; } @@ -2388,8 +2382,7 @@ static void nilfs_segctor_notify(struct nilfs_sc_info *sci, int mode, int err) */ static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode) { - struct nilfs_sb_info *sbi = sci->sc_sbi; - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sci->sc_super->s_fs_info; struct nilfs_super_block **sbp; int err = 0; @@ -2407,11 +2400,12 @@ static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode) nilfs_discontinued(nilfs)) { down_write(&nilfs->ns_sem); err = -EIO; - sbp = nilfs_prepare_super(sbi, + sbp = nilfs_prepare_super(sci->sc_super, nilfs_sb_will_flip(nilfs)); if (likely(sbp)) { nilfs_set_log_cursor(sbp[0], nilfs); - err = nilfs_commit_super(sbi, NILFS_SB_COMMIT); + err = nilfs_commit_super(sci->sc_super, + NILFS_SB_COMMIT); } up_write(&nilfs->ns_sem); } @@ -2443,16 +2437,15 @@ nilfs_remove_written_gcinodes(struct the_nilfs *nilfs, struct list_head *head) int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv, void **kbufs) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); - struct nilfs_sc_info *sci = NILFS_SC(sbi); - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; + struct nilfs_sc_info *sci = nilfs->ns_writer; struct nilfs_transaction_info ti; int err; if (unlikely(!sci)) return -EROFS; - nilfs_transaction_lock(sbi, &ti, 1); + nilfs_transaction_lock(sb, &ti, 1); err = nilfs_mdt_save_to_shadow_map(nilfs->ns_dat); if (unlikely(err)) @@ -2480,14 +2473,14 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv, set_current_state(TASK_INTERRUPTIBLE); schedule_timeout(sci->sc_interval); } - if (nilfs_test_opt(sbi, DISCARD)) { + if (nilfs_test_opt(nilfs, DISCARD)) { int ret = nilfs_discard_segments(nilfs, sci->sc_freesegs, sci->sc_nfreesegs); if (ret) { printk(KERN_WARNING "NILFS warning: error %d on discard request, " "turning discards off for the device\n", ret); - nilfs_clear_opt(sbi, DISCARD); + nilfs_clear_opt(nilfs, DISCARD); } } @@ -2495,16 +2488,15 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv, sci->sc_freesegs = NULL; sci->sc_nfreesegs = 0; nilfs_mdt_clear_shadow_map(nilfs->ns_dat); - nilfs_transaction_unlock(sbi); + nilfs_transaction_unlock(sb); return err; } static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode) { - struct nilfs_sb_info *sbi = sci->sc_sbi; struct nilfs_transaction_info ti; - nilfs_transaction_lock(sbi, &ti, 0); + nilfs_transaction_lock(sci->sc_super, &ti, 0); nilfs_segctor_construct(sci, mode); /* @@ -2515,7 +2507,7 @@ static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode) if (test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) nilfs_segctor_start_timer(sci); - nilfs_transaction_unlock(sbi); + nilfs_transaction_unlock(sci->sc_super); } static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci) @@ -2561,7 +2553,7 @@ static int nilfs_segctor_flush_mode(struct nilfs_sc_info *sci) static int nilfs_segctor_thread(void *arg) { struct nilfs_sc_info *sci = (struct nilfs_sc_info *)arg; - struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs; + struct the_nilfs *nilfs = sci->sc_super->s_fs_info; int timeout = 0; sci->sc_timer.data = (unsigned long)current; @@ -2672,17 +2664,17 @@ static void nilfs_segctor_kill_thread(struct nilfs_sc_info *sci) /* * Setup & clean-up functions */ -static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi, +static struct nilfs_sc_info *nilfs_segctor_new(struct super_block *sb, struct nilfs_root *root) { + struct the_nilfs *nilfs = sb->s_fs_info; struct nilfs_sc_info *sci; sci = kzalloc(sizeof(*sci), GFP_KERNEL); if (!sci) return NULL; - sci->sc_sbi = sbi; - sci->sc_super = sbi->s_super; + sci->sc_super = sb; nilfs_get_root(root); sci->sc_root = root; @@ -2702,10 +2694,10 @@ static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi, sci->sc_mjcp_freq = HZ * NILFS_SC_DEFAULT_SR_FREQ; sci->sc_watermark = NILFS_SC_DEFAULT_WATERMARK; - if (sbi->s_interval) - sci->sc_interval = sbi->s_interval; - if (sbi->s_watermark) - sci->sc_watermark = sbi->s_watermark; + if (nilfs->ns_interval) + sci->sc_interval = nilfs->ns_interval; + if (nilfs->ns_watermark) + sci->sc_watermark = nilfs->ns_watermark; return sci; } @@ -2716,12 +2708,11 @@ static void nilfs_segctor_write_out(struct nilfs_sc_info *sci) /* The segctord thread was stopped and its timer was removed. But some tasks remain. */ do { - struct nilfs_sb_info *sbi = sci->sc_sbi; struct nilfs_transaction_info ti; - nilfs_transaction_lock(sbi, &ti, 0); + nilfs_transaction_lock(sci->sc_super, &ti, 0); ret = nilfs_segctor_construct(sci, SC_LSEG_SR); - nilfs_transaction_unlock(sbi); + nilfs_transaction_unlock(sci->sc_super); } while (ret && retrycount-- > 0); } @@ -2736,10 +2727,10 @@ static void nilfs_segctor_write_out(struct nilfs_sc_info *sci) */ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) { - struct nilfs_sb_info *sbi = sci->sc_sbi; + struct the_nilfs *nilfs = sci->sc_super->s_fs_info; int flag; - up_write(&sbi->s_nilfs->ns_segctor_sem); + up_write(&nilfs->ns_segctor_sem); spin_lock(&sci->sc_state_lock); nilfs_segctor_kill_thread(sci); @@ -2753,9 +2744,9 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) WARN_ON(!list_empty(&sci->sc_copied_buffers)); if (!list_empty(&sci->sc_dirty_files)) { - nilfs_warning(sbi->s_super, __func__, + nilfs_warning(sci->sc_super, __func__, "dirty file(s) after the final construction\n"); - nilfs_dispose_list(sbi, &sci->sc_dirty_files, 1); + nilfs_dispose_list(nilfs, &sci->sc_dirty_files, 1); } WARN_ON(!list_empty(&sci->sc_segbufs)); @@ -2763,79 +2754,78 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) nilfs_put_root(sci->sc_root); - down_write(&sbi->s_nilfs->ns_segctor_sem); + down_write(&nilfs->ns_segctor_sem); del_timer_sync(&sci->sc_timer); kfree(sci); } /** - * nilfs_attach_segment_constructor - attach a segment constructor - * @sbi: nilfs_sb_info + * nilfs_attach_log_writer - attach log writer + * @sb: super block instance * @root: root object of the current filesystem tree * - * nilfs_attach_segment_constructor() allocates a struct nilfs_sc_info, - * initializes it, and starts the segment constructor. + * This allocates a log writer object, initializes it, and starts the + * log writer. * * Return Value: On success, 0 is returned. On error, one of the following * negative error code is returned. * * %-ENOMEM - Insufficient memory available. */ -int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi, - struct nilfs_root *root) +int nilfs_attach_log_writer(struct super_block *sb, struct nilfs_root *root) { + struct the_nilfs *nilfs = sb->s_fs_info; int err; - if (NILFS_SC(sbi)) { + if (nilfs->ns_writer) { /* * This happens if the filesystem was remounted * read/write after nilfs_error degenerated it into a * read-only mount. */ - nilfs_detach_segment_constructor(sbi); + nilfs_detach_log_writer(sb); } - sbi->s_sc_info = nilfs_segctor_new(sbi, root); - if (!sbi->s_sc_info) + nilfs->ns_writer = nilfs_segctor_new(sb, root); + if (!nilfs->ns_writer) return -ENOMEM; - err = nilfs_segctor_start_thread(NILFS_SC(sbi)); + err = nilfs_segctor_start_thread(nilfs->ns_writer); if (err) { - kfree(sbi->s_sc_info); - sbi->s_sc_info = NULL; + kfree(nilfs->ns_writer); + nilfs->ns_writer = NULL; } return err; } /** - * nilfs_detach_segment_constructor - destroy the segment constructor - * @sbi: nilfs_sb_info + * nilfs_detach_log_writer - destroy log writer + * @sb: super block instance * - * nilfs_detach_segment_constructor() kills the segment constructor daemon, - * frees the struct nilfs_sc_info, and destroy the dirty file list. + * This kills log writer daemon, frees the log writer object, and + * destroys list of dirty files. */ -void nilfs_detach_segment_constructor(struct nilfs_sb_info *sbi) +void nilfs_detach_log_writer(struct super_block *sb) { - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; LIST_HEAD(garbage_list); down_write(&nilfs->ns_segctor_sem); - if (NILFS_SC(sbi)) { - nilfs_segctor_destroy(NILFS_SC(sbi)); - sbi->s_sc_info = NULL; + if (nilfs->ns_writer) { + nilfs_segctor_destroy(nilfs->ns_writer); + nilfs->ns_writer = NULL; } /* Force to free the list of dirty files */ - spin_lock(&sbi->s_inode_lock); - if (!list_empty(&sbi->s_dirty_files)) { - list_splice_init(&sbi->s_dirty_files, &garbage_list); - nilfs_warning(sbi->s_super, __func__, - "Non empty dirty list after the last " - "segment construction\n"); - } - spin_unlock(&sbi->s_inode_lock); + spin_lock(&nilfs->ns_inode_lock); + if (!list_empty(&nilfs->ns_dirty_files)) { + list_splice_init(&nilfs->ns_dirty_files, &garbage_list); + nilfs_warning(sb, __func__, + "Hit dirty file after stopped log writer\n"); + } + spin_unlock(&nilfs->ns_inode_lock); up_write(&nilfs->ns_segctor_sem); - nilfs_dispose_list(sbi, &garbage_list, 1); + nilfs_dispose_list(nilfs, &garbage_list, 1); } diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h index cd8056e7cbed..6c02a86745fb 100644 --- a/fs/nilfs2/segment.h +++ b/fs/nilfs2/segment.h @@ -27,7 +27,7 @@ #include <linux/fs.h> #include <linux/buffer_head.h> #include <linux/nilfs2_fs.h> -#include "sb.h" +#include "nilfs.h" struct nilfs_root; @@ -88,7 +88,6 @@ struct nilfs_segsum_pointer { /** * struct nilfs_sc_info - Segment constructor information * @sc_super: Back pointer to super_block struct - * @sc_sbi: Back pointer to nilfs_sb_info struct * @sc_root: root object of the current filesystem tree * @sc_nblk_inc: Block count of current generation * @sc_dirty_files: List of files to be written @@ -131,7 +130,6 @@ struct nilfs_segsum_pointer { */ struct nilfs_sc_info { struct super_block *sc_super; - struct nilfs_sb_info *sc_sbi; struct nilfs_root *sc_root; unsigned long sc_nblk_inc; @@ -235,18 +233,16 @@ extern void nilfs_flush_segment(struct super_block *, ino_t); extern int nilfs_clean_segments(struct super_block *, struct nilfs_argv *, void **); -int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi, - struct nilfs_root *root); -extern void nilfs_detach_segment_constructor(struct nilfs_sb_info *); +int nilfs_attach_log_writer(struct super_block *sb, struct nilfs_root *root); +void nilfs_detach_log_writer(struct super_block *sb); /* recovery.c */ extern int nilfs_read_super_root_block(struct the_nilfs *, sector_t, struct buffer_head **, int); extern int nilfs_search_super_root(struct the_nilfs *, struct nilfs_recovery_info *); -extern int nilfs_salvage_orphan_logs(struct the_nilfs *, - struct nilfs_sb_info *, - struct nilfs_recovery_info *); +int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs, struct super_block *sb, + struct nilfs_recovery_info *ri); extern void nilfs_dispose_segment_list(struct list_head *); #endif /* _NILFS_SEGMENT_H */ diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 1673b3d99842..062cca065195 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -43,7 +43,6 @@ #include <linux/init.h> #include <linux/blkdev.h> #include <linux/parser.h> -#include <linux/random.h> #include <linux/crc32.h> #include <linux/vfs.h> #include <linux/writeback.h> @@ -72,23 +71,23 @@ struct kmem_cache *nilfs_transaction_cachep; struct kmem_cache *nilfs_segbuf_cachep; struct kmem_cache *nilfs_btree_path_cache; -static int nilfs_setup_super(struct nilfs_sb_info *sbi, int is_mount); +static int nilfs_setup_super(struct super_block *sb, int is_mount); static int nilfs_remount(struct super_block *sb, int *flags, char *data); -static void nilfs_set_error(struct nilfs_sb_info *sbi) +static void nilfs_set_error(struct super_block *sb) { - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; struct nilfs_super_block **sbp; down_write(&nilfs->ns_sem); if (!(nilfs->ns_mount_state & NILFS_ERROR_FS)) { nilfs->ns_mount_state |= NILFS_ERROR_FS; - sbp = nilfs_prepare_super(sbi, 0); + sbp = nilfs_prepare_super(sb, 0); if (likely(sbp)) { sbp[0]->s_state |= cpu_to_le16(NILFS_ERROR_FS); if (sbp[1]) sbp[1]->s_state |= cpu_to_le16(NILFS_ERROR_FS); - nilfs_commit_super(sbi, NILFS_SB_COMMIT_ALL); + nilfs_commit_super(sb, NILFS_SB_COMMIT_ALL); } } up_write(&nilfs->ns_sem); @@ -109,7 +108,7 @@ static void nilfs_set_error(struct nilfs_sb_info *sbi) void nilfs_error(struct super_block *sb, const char *function, const char *fmt, ...) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); + struct the_nilfs *nilfs = sb->s_fs_info; struct va_format vaf; va_list args; @@ -124,15 +123,15 @@ void nilfs_error(struct super_block *sb, const char *function, va_end(args); if (!(sb->s_flags & MS_RDONLY)) { - nilfs_set_error(sbi); + nilfs_set_error(sb); - if (nilfs_test_opt(sbi, ERRORS_RO)) { + if (nilfs_test_opt(nilfs, ERRORS_RO)) { printk(KERN_CRIT "Remounting filesystem read-only\n"); sb->s_flags |= MS_RDONLY; } } - if (nilfs_test_opt(sbi, ERRORS_PANIC)) + if (nilfs_test_opt(nilfs, ERRORS_PANIC)) panic("NILFS (device %s): panic forced after error\n", sb->s_id); } @@ -189,14 +188,14 @@ void nilfs_destroy_inode(struct inode *inode) call_rcu(&inode->i_rcu, nilfs_i_callback); } -static int nilfs_sync_super(struct nilfs_sb_info *sbi, int flag) +static int nilfs_sync_super(struct super_block *sb, int flag) { - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; int err; retry: set_buffer_dirty(nilfs->ns_sbh[0]); - if (nilfs_test_opt(sbi, BARRIER)) { + if (nilfs_test_opt(nilfs, BARRIER)) { err = __sync_dirty_buffer(nilfs->ns_sbh[0], WRITE_SYNC | WRITE_FLUSH_FUA); } else { @@ -263,10 +262,10 @@ void nilfs_set_log_cursor(struct nilfs_super_block *sbp, spin_unlock(&nilfs->ns_last_segment_lock); } -struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *sbi, +struct nilfs_super_block **nilfs_prepare_super(struct super_block *sb, int flip) { - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; struct nilfs_super_block **sbp = nilfs->ns_sbp; /* nilfs->ns_sem must be locked by the caller. */ @@ -276,7 +275,7 @@ struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *sbi, memcpy(sbp[0], sbp[1], nilfs->ns_sbsize); } else { printk(KERN_CRIT "NILFS: superblock broke on dev %s\n", - sbi->s_super->s_id); + sb->s_id); return NULL; } } else if (sbp[1] && @@ -290,9 +289,9 @@ struct nilfs_super_block **nilfs_prepare_super(struct nilfs_sb_info *sbi, return sbp; } -int nilfs_commit_super(struct nilfs_sb_info *sbi, int flag) +int nilfs_commit_super(struct super_block *sb, int flag) { - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; struct nilfs_super_block **sbp = nilfs->ns_sbp; time_t t; @@ -312,27 +311,28 @@ int nilfs_commit_super(struct nilfs_sb_info *sbi, int flag) nilfs->ns_sbsize)); } clear_nilfs_sb_dirty(nilfs); - return nilfs_sync_super(sbi, flag); + return nilfs_sync_super(sb, flag); } /** * nilfs_cleanup_super() - write filesystem state for cleanup - * @sbi: nilfs_sb_info to be unmounted or degraded to read-only + * @sb: super block instance to be unmounted or degraded to read-only * * This function restores state flags in the on-disk super block. * This will set "clean" flag (i.e. NILFS_VALID_FS) unless the * filesystem was not clean previously. */ -int nilfs_cleanup_super(struct nilfs_sb_info *sbi) +int nilfs_cleanup_super(struct super_block *sb) { + struct the_nilfs *nilfs = sb->s_fs_info; struct nilfs_super_block **sbp; int flag = NILFS_SB_COMMIT; int ret = -EIO; - sbp = nilfs_prepare_super(sbi, 0); + sbp = nilfs_prepare_super(sb, 0); if (sbp) { - sbp[0]->s_state = cpu_to_le16(sbi->s_nilfs->ns_mount_state); - nilfs_set_log_cursor(sbp[0], sbi->s_nilfs); + sbp[0]->s_state = cpu_to_le16(nilfs->ns_mount_state); + nilfs_set_log_cursor(sbp[0], nilfs); if (sbp[1] && sbp[0]->s_last_cno == sbp[1]->s_last_cno) { /* * make the "clean" flag also to the opposite @@ -342,21 +342,20 @@ int nilfs_cleanup_super(struct nilfs_sb_info *sbi) sbp[1]->s_state = sbp[0]->s_state; flag = NILFS_SB_COMMIT_ALL; } - ret = nilfs_commit_super(sbi, flag); + ret = nilfs_commit_super(sb, flag); } return ret; } static void nilfs_put_super(struct super_block *sb) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; - nilfs_detach_segment_constructor(sbi); + nilfs_detach_log_writer(sb); if (!(sb->s_flags & MS_RDONLY)) { down_write(&nilfs->ns_sem); - nilfs_cleanup_super(sbi); + nilfs_cleanup_super(sb); up_write(&nilfs->ns_sem); } @@ -365,15 +364,12 @@ static void nilfs_put_super(struct super_block *sb) iput(nilfs->ns_dat); destroy_nilfs(nilfs); - sbi->s_super = NULL; sb->s_fs_info = NULL; - kfree(sbi); } static int nilfs_sync_fs(struct super_block *sb, int wait) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; struct nilfs_super_block **sbp; int err = 0; @@ -383,10 +379,10 @@ static int nilfs_sync_fs(struct super_block *sb, int wait) down_write(&nilfs->ns_sem); if (nilfs_sb_dirty(nilfs)) { - sbp = nilfs_prepare_super(sbi, nilfs_sb_will_flip(nilfs)); + sbp = nilfs_prepare_super(sb, nilfs_sb_will_flip(nilfs)); if (likely(sbp)) { nilfs_set_log_cursor(sbp[0], nilfs); - nilfs_commit_super(sbi, NILFS_SB_COMMIT); + nilfs_commit_super(sb, NILFS_SB_COMMIT); } } up_write(&nilfs->ns_sem); @@ -394,10 +390,10 @@ static int nilfs_sync_fs(struct super_block *sb, int wait) return err; } -int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt, +int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt, struct nilfs_root **rootp) { - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; struct nilfs_root *root; struct nilfs_checkpoint *raw_cp; struct buffer_head *bh_cp; @@ -426,7 +422,7 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt, goto failed; } - err = nilfs_ifile_read(sbi->s_super, root, nilfs->ns_inode_size, + err = nilfs_ifile_read(sb, root, nilfs->ns_inode_size, &raw_cp->cp_ifile_inode, &root->ifile); if (err) goto failed_bh; @@ -450,8 +446,7 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt, static int nilfs_freeze(struct super_block *sb) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; int err; if (sb->s_flags & MS_RDONLY) @@ -459,21 +454,20 @@ static int nilfs_freeze(struct super_block *sb) /* Mark super block clean */ down_write(&nilfs->ns_sem); - err = nilfs_cleanup_super(sbi); + err = nilfs_cleanup_super(sb); up_write(&nilfs->ns_sem); return err; } static int nilfs_unfreeze(struct super_block *sb) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; if (sb->s_flags & MS_RDONLY) return 0; down_write(&nilfs->ns_sem); - nilfs_setup_super(sbi, false); + nilfs_setup_super(sb, false); up_write(&nilfs->ns_sem); return 0; } @@ -530,22 +524,22 @@ static int nilfs_statfs(struct dentry *dentry, struct kstatfs *buf) static int nilfs_show_options(struct seq_file *seq, struct vfsmount *vfs) { struct super_block *sb = vfs->mnt_sb; - struct nilfs_sb_info *sbi = NILFS_SB(sb); + struct the_nilfs *nilfs = sb->s_fs_info; struct nilfs_root *root = NILFS_I(vfs->mnt_root->d_inode)->i_root; - if (!nilfs_test_opt(sbi, BARRIER)) + if (!nilfs_test_opt(nilfs, BARRIER)) seq_puts(seq, ",nobarrier"); if (root->cno != NILFS_CPTREE_CURRENT_CNO) seq_printf(seq, ",cp=%llu", (unsigned long long)root->cno); - if (nilfs_test_opt(sbi, ERRORS_PANIC)) + if (nilfs_test_opt(nilfs, ERRORS_PANIC)) seq_puts(seq, ",errors=panic"); - if (nilfs_test_opt(sbi, ERRORS_CONT)) + if (nilfs_test_opt(nilfs, ERRORS_CONT)) seq_puts(seq, ",errors=continue"); - if (nilfs_test_opt(sbi, STRICT_ORDER)) + if (nilfs_test_opt(nilfs, STRICT_ORDER)) seq_puts(seq, ",order=strict"); - if (nilfs_test_opt(sbi, NORECOVERY)) + if (nilfs_test_opt(nilfs, NORECOVERY)) seq_puts(seq, ",norecovery"); - if (nilfs_test_opt(sbi, DISCARD)) + if (nilfs_test_opt(nilfs, DISCARD)) seq_puts(seq, ",discard"); return 0; @@ -594,7 +588,7 @@ static match_table_t tokens = { static int parse_options(char *options, struct super_block *sb, int is_remount) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); + struct the_nilfs *nilfs = sb->s_fs_info; char *p; substring_t args[MAX_OPT_ARGS]; @@ -609,29 +603,29 @@ static int parse_options(char *options, struct super_block *sb, int is_remount) token = match_token(p, tokens, args); switch (token) { case Opt_barrier: - nilfs_set_opt(sbi, BARRIER); + nilfs_set_opt(nilfs, BARRIER); break; case Opt_nobarrier: - nilfs_clear_opt(sbi, BARRIER); + nilfs_clear_opt(nilfs, BARRIER); break; case Opt_order: if (strcmp(args[0].from, "relaxed") == 0) /* Ordered data semantics */ - nilfs_clear_opt(sbi, STRICT_ORDER); + nilfs_clear_opt(nilfs, STRICT_ORDER); else if (strcmp(args[0].from, "strict") == 0) /* Strict in-order semantics */ - nilfs_set_opt(sbi, STRICT_ORDER); + nilfs_set_opt(nilfs, STRICT_ORDER); else return 0; break; case Opt_err_panic: - nilfs_write_opt(sbi, ERROR_MODE, ERRORS_PANIC); + nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_PANIC); break; case Opt_err_ro: - nilfs_write_opt(sbi, ERROR_MODE, ERRORS_RO); + nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_RO); break; case Opt_err_cont: - nilfs_write_opt(sbi, ERROR_MODE, ERRORS_CONT); + nilfs_write_opt(nilfs, ERROR_MODE, ERRORS_CONT); break; case Opt_snapshot: if (is_remount) { @@ -642,13 +636,13 @@ static int parse_options(char *options, struct super_block *sb, int is_remount) } break; case Opt_norecovery: - nilfs_set_opt(sbi, NORECOVERY); + nilfs_set_opt(nilfs, NORECOVERY); break; case Opt_discard: - nilfs_set_opt(sbi, DISCARD); + nilfs_set_opt(nilfs, DISCARD); break; case Opt_nodiscard: - nilfs_clear_opt(sbi, DISCARD); + nilfs_clear_opt(nilfs, DISCARD); break; default: printk(KERN_ERR @@ -660,22 +654,24 @@ static int parse_options(char *options, struct super_block *sb, int is_remount) } static inline void -nilfs_set_default_options(struct nilfs_sb_info *sbi, +nilfs_set_default_options(struct super_block *sb, struct nilfs_super_block *sbp) { - sbi->s_mount_opt = + struct the_nilfs *nilfs = sb->s_fs_info; + + nilfs->ns_mount_opt = NILFS_MOUNT_ERRORS_RO | NILFS_MOUNT_BARRIER; } -static int nilfs_setup_super(struct nilfs_sb_info *sbi, int is_mount) +static int nilfs_setup_super(struct super_block *sb, int is_mount) { - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; struct nilfs_super_block **sbp; int max_mnt_count; int mnt_count; /* nilfs->ns_sem must be locked by the caller. */ - sbp = nilfs_prepare_super(sbi, 0); + sbp = nilfs_prepare_super(sb, 0); if (!sbp) return -EIO; @@ -706,7 +702,7 @@ skip_mount_setup: /* synchronize sbp[1] with sbp[0] */ if (sbp[1]) memcpy(sbp[1], sbp[0], nilfs->ns_sbsize); - return nilfs_commit_super(sbi, NILFS_SB_COMMIT_ALL); + return nilfs_commit_super(sb, NILFS_SB_COMMIT_ALL); } struct nilfs_super_block *nilfs_read_super_block(struct super_block *sb, @@ -727,7 +723,7 @@ int nilfs_store_magic_and_option(struct super_block *sb, struct nilfs_super_block *sbp, char *data) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); + struct the_nilfs *nilfs = sb->s_fs_info; sb->s_magic = le16_to_cpu(sbp->s_magic); @@ -736,12 +732,12 @@ int nilfs_store_magic_and_option(struct super_block *sb, sb->s_flags |= MS_NOATIME; #endif - nilfs_set_default_options(sbi, sbp); + nilfs_set_default_options(sb, sbp); - sbi->s_resuid = le16_to_cpu(sbp->s_def_resuid); - sbi->s_resgid = le16_to_cpu(sbp->s_def_resgid); - sbi->s_interval = le32_to_cpu(sbp->s_c_interval); - sbi->s_watermark = le32_to_cpu(sbp->s_c_block_max); + nilfs->ns_resuid = le16_to_cpu(sbp->s_def_resuid); + nilfs->ns_resgid = le16_to_cpu(sbp->s_def_resgid); + nilfs->ns_interval = le32_to_cpu(sbp->s_c_interval); + nilfs->ns_watermark = le32_to_cpu(sbp->s_c_block_max); return !parse_options(data, sb, 0) ? -EINVAL : 0 ; } @@ -822,7 +818,7 @@ static int nilfs_get_root_dentry(struct super_block *sb, static int nilfs_attach_snapshot(struct super_block *s, __u64 cno, struct dentry **root_dentry) { - struct the_nilfs *nilfs = NILFS_SB(s)->s_nilfs; + struct the_nilfs *nilfs = s->s_fs_info; struct nilfs_root *root; int ret; @@ -840,7 +836,7 @@ static int nilfs_attach_snapshot(struct super_block *s, __u64 cno, goto out; } - ret = nilfs_attach_checkpoint(NILFS_SB(s), cno, false, &root); + ret = nilfs_attach_checkpoint(s, cno, false, &root); if (ret) { printk(KERN_ERR "NILFS: error loading snapshot " "(checkpoint number=%llu).\n", @@ -874,7 +870,7 @@ static int nilfs_try_to_shrink_tree(struct dentry *root_dentry) int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno) { - struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; struct nilfs_root *root; struct inode *inode; struct dentry *dentry; @@ -887,7 +883,7 @@ int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno) return true; /* protect recent checkpoints */ ret = false; - root = nilfs_lookup_root(NILFS_SB(sb)->s_nilfs, cno); + root = nilfs_lookup_root(nilfs, cno); if (root) { inode = nilfs_ilookup(sb, root, NILFS_ROOT_INO); if (inode) { @@ -917,43 +913,21 @@ static int nilfs_fill_super(struct super_block *sb, void *data, int silent) { struct the_nilfs *nilfs; - struct nilfs_sb_info *sbi; struct nilfs_root *fsroot; struct backing_dev_info *bdi; __u64 cno; int err; - sbi = kzalloc(sizeof(*sbi), GFP_KERNEL); - if (!sbi) + nilfs = alloc_nilfs(sb->s_bdev); + if (!nilfs) return -ENOMEM; - sb->s_fs_info = sbi; - sbi->s_super = sb; - - nilfs = alloc_nilfs(sb->s_bdev); - if (!nilfs) { - err = -ENOMEM; - goto failed_sbi; - } - sbi->s_nilfs = nilfs; + sb->s_fs_info = nilfs; - err = init_nilfs(nilfs, sbi, (char *)data); + err = init_nilfs(nilfs, sb, (char *)data); if (err) goto failed_nilfs; - spin_lock_init(&sbi->s_inode_lock); - INIT_LIST_HEAD(&sbi->s_dirty_files); - - /* - * Following initialization is overlapped because - * nilfs_sb_info structure has been cleared at the beginning. - * But we reserve them to keep our interest and make ready - * for the future change. - */ - get_random_bytes(&sbi->s_next_generation, - sizeof(sbi->s_next_generation)); - spin_lock_init(&sbi->s_next_gen_lock); - sb->s_op = &nilfs_sops; sb->s_export_op = &nilfs_export_ops; sb->s_root = NULL; @@ -962,12 +936,12 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent) bdi = sb->s_bdev->bd_inode->i_mapping->backing_dev_info; sb->s_bdi = bdi ? : &default_backing_dev_info; - err = load_nilfs(nilfs, sbi); + err = load_nilfs(nilfs, sb); if (err) goto failed_nilfs; cno = nilfs_last_cno(nilfs); - err = nilfs_attach_checkpoint(sbi, cno, true, &fsroot); + err = nilfs_attach_checkpoint(sb, cno, true, &fsroot); if (err) { printk(KERN_ERR "NILFS: error loading last checkpoint " "(checkpoint number=%llu).\n", (unsigned long long)cno); @@ -975,7 +949,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent) } if (!(sb->s_flags & MS_RDONLY)) { - err = nilfs_attach_segment_constructor(sbi, fsroot); + err = nilfs_attach_log_writer(sb, fsroot); if (err) goto failed_checkpoint; } @@ -988,14 +962,14 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent) if (!(sb->s_flags & MS_RDONLY)) { down_write(&nilfs->ns_sem); - nilfs_setup_super(sbi, true); + nilfs_setup_super(sb, true); up_write(&nilfs->ns_sem); } return 0; failed_segctor: - nilfs_detach_segment_constructor(sbi); + nilfs_detach_log_writer(sb); failed_checkpoint: nilfs_put_root(fsroot); @@ -1007,23 +981,18 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent) failed_nilfs: destroy_nilfs(nilfs); - - failed_sbi: - sb->s_fs_info = NULL; - kfree(sbi); return err; } static int nilfs_remount(struct super_block *sb, int *flags, char *data) { - struct nilfs_sb_info *sbi = NILFS_SB(sb); - struct the_nilfs *nilfs = sbi->s_nilfs; + struct the_nilfs *nilfs = sb->s_fs_info; unsigned long old_sb_flags; unsigned long old_mount_opt; int err; old_sb_flags = sb->s_flags; - old_mount_opt = sbi->s_mount_opt; + old_mount_opt = nilfs->ns_mount_opt; if (!parse_options(data, sb, 1)) { err = -EINVAL; @@ -1043,8 +1012,8 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) goto out; if (*flags & MS_RDONLY) { - /* Shutting down the segment constructor */ - nilfs_detach_segment_constructor(sbi); + /* Shutting down log writer */ + nilfs_detach_log_writer(sb); sb->s_flags |= MS_RDONLY; /* @@ -1052,7 +1021,7 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) * the RDONLY flag and then mark the partition as valid again. */ down_write(&nilfs->ns_sem); - nilfs_cleanup_super(sbi); + nilfs_cleanup_super(sb); up_write(&nilfs->ns_sem); } else { __u64 features; @@ -1079,12 +1048,12 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) sb->s_flags &= ~MS_RDONLY; root = NILFS_I(sb->s_root->d_inode)->i_root; - err = nilfs_attach_segment_constructor(sbi, root); + err = nilfs_attach_log_writer(sb, root); if (err) goto restore_opts; down_write(&nilfs->ns_sem); - nilfs_setup_super(sbi, true); + nilfs_setup_super(sb, true); up_write(&nilfs->ns_sem); } out: @@ -1092,13 +1061,12 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) restore_opts: sb->s_flags = old_sb_flags; - sbi->s_mount_opt = old_mount_opt; + nilfs->ns_mount_opt = old_mount_opt; return err; } struct nilfs_super_data { struct block_device *bdev; - struct nilfs_sb_info *sbi; __u64 cno; int flags; }; diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c index ad4ac607cf57..d2acd1a651f3 100644 --- a/fs/nilfs2/the_nilfs.c +++ b/fs/nilfs2/the_nilfs.c @@ -25,6 +25,7 @@ #include <linux/slab.h> #include <linux/blkdev.h> #include <linux/backing-dev.h> +#include <linux/random.h> #include <linux/crc32.h> #include "nilfs.h" #include "segment.h" @@ -75,7 +76,10 @@ struct the_nilfs *alloc_nilfs(struct block_device *bdev) nilfs->ns_bdev = bdev; atomic_set(&nilfs->ns_ndirtyblks, 0); init_rwsem(&nilfs->ns_sem); + INIT_LIST_HEAD(&nilfs->ns_dirty_files); INIT_LIST_HEAD(&nilfs->ns_gc_inodes); + spin_lock_init(&nilfs->ns_inode_lock); + spin_lock_init(&nilfs->ns_next_gen_lock); spin_lock_init(&nilfs->ns_last_segment_lock); nilfs->ns_cptree = RB_ROOT; spin_lock_init(&nilfs->ns_cptree_lock); @@ -197,16 +201,16 @@ static int nilfs_store_log_cursor(struct the_nilfs *nilfs, /** * load_nilfs - load and recover the nilfs * @nilfs: the_nilfs structure to be released - * @sbi: nilfs_sb_info used to recover past segment + * @sb: super block isntance used to recover past segment * * load_nilfs() searches and load the latest super root, * attaches the last segment, and does recovery if needed. * The caller must call this exclusively for simultaneous mounts. */ -int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) +int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb) { struct nilfs_recovery_info ri; - unsigned int s_flags = sbi->s_super->s_flags; + unsigned int s_flags = sb->s_flags; int really_read_only = bdev_read_only(nilfs->ns_bdev); int valid_fs = nilfs_valid_fs(nilfs); int err; @@ -271,7 +275,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) goto scan_error; } - err = nilfs_load_super_root(nilfs, sbi->s_super, ri.ri_super_root); + err = nilfs_load_super_root(nilfs, sb, ri.ri_super_root); if (unlikely(err)) { printk(KERN_ERR "NILFS: error loading super root.\n"); goto failed; @@ -283,7 +287,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) if (s_flags & MS_RDONLY) { __u64 features; - if (nilfs_test_opt(sbi, NORECOVERY)) { + if (nilfs_test_opt(nilfs, NORECOVERY)) { printk(KERN_INFO "NILFS: norecovery option specified. " "skipping roll-forward recovery\n"); goto skip_recovery; @@ -304,21 +308,21 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) err = -EROFS; goto failed_unload; } - sbi->s_super->s_flags &= ~MS_RDONLY; - } else if (nilfs_test_opt(sbi, NORECOVERY)) { + sb->s_flags &= ~MS_RDONLY; + } else if (nilfs_test_opt(nilfs, NORECOVERY)) { printk(KERN_ERR "NILFS: recovery cancelled because norecovery " "option was specified for a read/write mount\n"); err = -EINVAL; goto failed_unload; } - err = nilfs_salvage_orphan_logs(nilfs, sbi, &ri); + err = nilfs_salvage_orphan_logs(nilfs, sb, &ri); if (err) goto failed_unload; down_write(&nilfs->ns_sem); nilfs->ns_mount_state |= NILFS_VALID_FS; /* set "clean" flag */ - err = nilfs_cleanup_super(sbi); + err = nilfs_cleanup_super(sb); up_write(&nilfs->ns_sem); if (err) { @@ -330,7 +334,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) skip_recovery: nilfs_clear_recovery_info(&ri); - sbi->s_super->s_flags = s_flags; + sb->s_flags = s_flags; return 0; scan_error: @@ -344,7 +348,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) failed: nilfs_clear_recovery_info(&ri); - sbi->s_super->s_flags = s_flags; + sb->s_flags = s_flags; return err; } @@ -475,10 +479,13 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs, return -EIO; } printk(KERN_WARNING - "NILFS warning: unable to read primary superblock\n"); - } else if (!sbp[1]) + "NILFS warning: unable to read primary superblock " + "(blocksize = %d)\n", blocksize); + } else if (!sbp[1]) { printk(KERN_WARNING - "NILFS warning: unable to read secondary superblock\n"); + "NILFS warning: unable to read secondary superblock " + "(blocksize = %d)\n", blocksize); + } /* * Compare two super blocks and set 1 in swp if the secondary @@ -505,7 +512,7 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs, if (!valid[!swp]) printk(KERN_WARNING "NILFS warning: broken superblock. " - "using spare superblock.\n"); + "using spare superblock (blocksize = %d).\n", blocksize); if (swp) nilfs_swap_super_block(nilfs); @@ -519,7 +526,6 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs, /** * init_nilfs - initialize a NILFS instance. * @nilfs: the_nilfs structure - * @sbi: nilfs_sb_info * @sb: super block * @data: mount options * @@ -530,9 +536,8 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs, * Return Value: On success, 0 is returned. On error, a negative error * code is returned. */ -int init_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, char *data) +int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data) { - struct super_block *sb = sbi->s_super; struct nilfs_super_block *sbp; int blocksize; int err; @@ -588,6 +593,9 @@ int init_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, char *data) nilfs->ns_blocksize_bits = sb->s_blocksize_bits; nilfs->ns_blocksize = blocksize; + get_random_bytes(&nilfs->ns_next_generation, + sizeof(nilfs->ns_next_generation)); + err = nilfs_store_disk_layout(nilfs, sbp); if (err) goto failed_sbh; diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h index fd85e4c05c6b..f4968145c2a3 100644 --- a/fs/nilfs2/the_nilfs.h +++ b/fs/nilfs2/the_nilfs.h @@ -31,7 +31,8 @@ #include <linux/blkdev.h> #include <linux/backing-dev.h> #include <linux/slab.h> -#include "sb.h" + +struct nilfs_sc_info; /* the_nilfs struct */ enum { @@ -65,13 +66,23 @@ enum { * @ns_last_cno: checkpoint number of the latest segment * @ns_prot_seq: least sequence number of segments which must not be reclaimed * @ns_prev_seq: base sequence number used to decide if advance log cursor - * @ns_segctor_sem: segment constructor semaphore + * @ns_writer: log writer + * @ns_segctor_sem: semaphore protecting log write * @ns_dat: DAT file inode * @ns_cpfile: checkpoint file inode * @ns_sufile: segusage file inode * @ns_cptree: rb-tree of all mounted checkpoints (nilfs_root) * @ns_cptree_lock: lock protecting @ns_cptree + * @ns_dirty_files: list of dirty files + * @ns_inode_lock: lock protecting @ns_dirty_files * @ns_gc_inodes: dummy inodes to keep live blocks + * @ns_next_generation: next generation number for inodes + * @ns_next_gen_lock: lock protecting @ns_next_generation + * @ns_mount_opt: mount options + * @ns_resuid: uid for reserved blocks + * @ns_resgid: gid for reserved blocks + * @ns_interval: checkpoint creation interval + * @ns_watermark: watermark for the number of dirty buffers * @ns_blocksize_bits: bit length of block size * @ns_blocksize: block size * @ns_nsegments: number of segments in filesystem @@ -131,6 +142,7 @@ struct the_nilfs { u64 ns_prot_seq; u64 ns_prev_seq; + struct nilfs_sc_info *ns_writer; struct rw_semaphore ns_segctor_sem; /* @@ -145,9 +157,25 @@ struct the_nilfs { struct rb_root ns_cptree; spinlock_t ns_cptree_lock; + /* Dirty inode list */ + struct list_head ns_dirty_files; + spinlock_t ns_inode_lock; + /* GC inode list */ struct list_head ns_gc_inodes; + /* Inode allocator */ + u32 ns_next_generation; + spinlock_t ns_next_gen_lock; + + /* Mount options */ + unsigned long ns_mount_opt; + + uid_t ns_resuid; + gid_t ns_resgid; + unsigned long ns_interval; + unsigned long ns_watermark; + /* Disk layout information (static) */ unsigned int ns_blocksize_bits; unsigned int ns_blocksize; @@ -180,6 +208,20 @@ THE_NILFS_FNS(DISCONTINUED, discontinued) THE_NILFS_FNS(GC_RUNNING, gc_running) THE_NILFS_FNS(SB_DIRTY, sb_dirty) +/* + * Mount option operations + */ +#define nilfs_clear_opt(nilfs, opt) \ + do { (nilfs)->ns_mount_opt &= ~NILFS_MOUNT_##opt; } while (0) +#define nilfs_set_opt(nilfs, opt) \ + do { (nilfs)->ns_mount_opt |= NILFS_MOUNT_##opt; } while (0) +#define nilfs_test_opt(nilfs, opt) ((nilfs)->ns_mount_opt & NILFS_MOUNT_##opt) +#define nilfs_write_opt(nilfs, mask, opt) \ + do { (nilfs)->ns_mount_opt = \ + (((nilfs)->ns_mount_opt & ~NILFS_MOUNT_##mask) | \ + NILFS_MOUNT_##opt); \ + } while (0) + /** * struct nilfs_root - nilfs root object * @cno: checkpoint number @@ -224,15 +266,14 @@ static inline int nilfs_sb_will_flip(struct the_nilfs *nilfs) void nilfs_set_last_segment(struct the_nilfs *, sector_t, u64, __u64); struct the_nilfs *alloc_nilfs(struct block_device *bdev); void destroy_nilfs(struct the_nilfs *nilfs); -int init_nilfs(struct the_nilfs *, struct nilfs_sb_info *, char *); -int load_nilfs(struct the_nilfs *, struct nilfs_sb_info *); +int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data); +int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb); int nilfs_discard_segments(struct the_nilfs *, __u64 *, size_t); int nilfs_count_free_blocks(struct the_nilfs *, sector_t *); struct nilfs_root *nilfs_lookup_root(struct the_nilfs *nilfs, __u64 cno); struct nilfs_root *nilfs_find_or_create_root(struct the_nilfs *nilfs, __u64 cno); void nilfs_put_root(struct nilfs_root *root); -struct nilfs_sb_info *nilfs_find_sbinfo(struct the_nilfs *, int, __u64); int nilfs_near_disk_full(struct the_nilfs *); void nilfs_fall_back_super_block(struct the_nilfs *); void nilfs_swap_super_block(struct the_nilfs *); |