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| author | Arnd Bergmann <arnd@arndb.de> | 2010-10-21 15:58:01 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2010-10-21 18:48:09 +0200 |
| commit | 6d7bccc2215c37205ede6c9cf84db64e7c4f9443 (patch) | |
| tree | 04864624eb5022eac6eec81d264b83e28fad2863 /fs/freevxfs | |
| parent | 073c21416268658bd1bc573af85eeac2ebb56ed5 (diff) | |
| download | linux-stable-6d7bccc2215c37205ede6c9cf84db64e7c4f9443.tar.gz linux-stable-6d7bccc2215c37205ede6c9cf84db64e7c4f9443.tar.bz2 linux-stable-6d7bccc2215c37205ede6c9cf84db64e7c4f9443.zip | |
BKL: remove BKL from freevxfs
All uses of the BKL in freevxfs were the result of a pushdown into
code that doesn't really need it. As Christoph points out, this
is a read-only file system, which eliminates most of the races in
readdir/lookup.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@infradead.org>
Diffstat (limited to 'fs/freevxfs')
| -rw-r--r-- | fs/freevxfs/vxfs_lookup.c | 14 | ||||
| -rw-r--r-- | fs/freevxfs/vxfs_super.c | 10 |
2 files changed, 2 insertions, 22 deletions
diff --git a/fs/freevxfs/vxfs_lookup.c b/fs/freevxfs/vxfs_lookup.c index 0ec7bb2c95c6..6c5131d592f0 100644 --- a/fs/freevxfs/vxfs_lookup.c +++ b/fs/freevxfs/vxfs_lookup.c @@ -36,7 +36,6 @@ #include <linux/highmem.h> #include <linux/kernel.h> #include <linux/pagemap.h> -#include <linux/smp_lock.h> #include "vxfs.h" #include "vxfs_dir.h" @@ -212,16 +211,12 @@ vxfs_lookup(struct inode *dip, struct dentry *dp, struct nameidata *nd) if (dp->d_name.len > VXFS_NAMELEN) return ERR_PTR(-ENAMETOOLONG); - lock_kernel(); ino = vxfs_inode_by_name(dip, dp); if (ino) { ip = vxfs_iget(dip->i_sb, ino); - if (IS_ERR(ip)) { - unlock_kernel(); + if (IS_ERR(ip)) return ERR_CAST(ip); - } } - unlock_kernel(); d_add(dp, ip); return NULL; } @@ -248,8 +243,6 @@ vxfs_readdir(struct file *fp, void *retp, filldir_t filler) u_long page, npages, block, pblocks, nblocks, offset; loff_t pos; - lock_kernel(); - switch ((long)fp->f_pos) { case 0: if (filler(retp, ".", 1, fp->f_pos, ip->i_ino, DT_DIR) < 0) @@ -265,10 +258,8 @@ vxfs_readdir(struct file *fp, void *retp, filldir_t filler) pos = fp->f_pos - 2; - if (pos > VXFS_DIRROUND(ip->i_size)) { - unlock_kernel(); + if (pos > VXFS_DIRROUND(ip->i_size)) return 0; - } npages = dir_pages(ip); nblocks = dir_blocks(ip); @@ -327,6 +318,5 @@ vxfs_readdir(struct file *fp, void *retp, filldir_t filler) done: fp->f_pos = ((page << PAGE_CACHE_SHIFT) | offset) + 2; out: - unlock_kernel(); return 0; } diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c index eb2b9e09c996..71b0148b8784 100644 --- a/fs/freevxfs/vxfs_super.c +++ b/fs/freevxfs/vxfs_super.c @@ -38,7 +38,6 @@ #include <linux/buffer_head.h> #include <linux/kernel.h> #include <linux/slab.h> -#include <linux/smp_lock.h> #include <linux/stat.h> #include <linux/vfs.h> #include <linux/mount.h> @@ -81,16 +80,12 @@ vxfs_put_super(struct super_block *sbp) { struct vxfs_sb_info *infp = VXFS_SBI(sbp); - lock_kernel(); - vxfs_put_fake_inode(infp->vsi_fship); vxfs_put_fake_inode(infp->vsi_ilist); vxfs_put_fake_inode(infp->vsi_stilist); brelse(infp->vsi_bp); kfree(infp); - - unlock_kernel(); } /** @@ -159,14 +154,11 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent) struct inode *root; int ret = -EINVAL; - lock_kernel(); - sbp->s_flags |= MS_RDONLY; infp = kzalloc(sizeof(*infp), GFP_KERNEL); if (!infp) { printk(KERN_WARNING "vxfs: unable to allocate incore superblock\n"); - unlock_kernel(); return -ENOMEM; } @@ -239,7 +231,6 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent) goto out_free_ilist; } - unlock_kernel(); return 0; out_free_ilist: @@ -249,7 +240,6 @@ out_free_ilist: out: brelse(bp); kfree(infp); - unlock_kernel(); return ret; } |