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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-04 10:50:24 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-04 10:50:24 -0700 |
commit | 4a2d057e4fc4f9ebd32351837c14c10a0773b956 (patch) | |
tree | b0ed0187a6839ebed4982fe7589b410222fd4b9a /fs/libfs.c | |
parent | 9735a22799b9214d17d3c231fe377fc852f042e9 (diff) | |
parent | 1fa64f198b9f8d6ec0f7aec7c18dc94684391140 (diff) | |
download | linux-4a2d057e4fc4f9ebd32351837c14c10a0773b956.tar.gz linux-4a2d057e4fc4f9ebd32351837c14c10a0773b956.tar.bz2 linux-4a2d057e4fc4f9ebd32351837c14c10a0773b956.zip |
Merge branch 'PAGE_CACHE_SIZE-removal'
Merge PAGE_CACHE_SIZE removal patches from Kirill Shutemov:
"PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time
ago with promise that one day it will be possible to implement page
cache with bigger chunks than PAGE_SIZE.
This promise never materialized. And unlikely will.
Let's stop pretending that pages in page cache are special. They are
not.
The first patch with most changes has been done with coccinelle. The
second is manual fixups on top.
The third patch removes macros definition"
[ I was planning to apply this just before rc2, but then I spaced out,
so here it is right _after_ rc2 instead.
As Kirill suggested as a possibility, I could have decided to only
merge the first two patches, and leave the old interfaces for
compatibility, but I'd rather get it all done and any out-of-tree
modules and patches can trivially do the converstion while still also
working with older kernels, so there is little reason to try to
maintain the redundant legacy model. - Linus ]
* PAGE_CACHE_SIZE-removal:
mm: drop PAGE_CACHE_* and page_cache_{get,release} definition
mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usage
mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
Diffstat (limited to 'fs/libfs.c')
-rw-r--r-- | fs/libfs.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/fs/libfs.c b/fs/libfs.c index 0ca80b2af420..f3fa82ce9b70 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -25,7 +25,7 @@ int simple_getattr(struct vfsmount *mnt, struct dentry *dentry, { struct inode *inode = d_inode(dentry); generic_fillattr(inode, stat); - stat->blocks = inode->i_mapping->nrpages << (PAGE_CACHE_SHIFT - 9); + stat->blocks = inode->i_mapping->nrpages << (PAGE_SHIFT - 9); return 0; } EXPORT_SYMBOL(simple_getattr); @@ -33,7 +33,7 @@ EXPORT_SYMBOL(simple_getattr); int simple_statfs(struct dentry *dentry, struct kstatfs *buf) { buf->f_type = dentry->d_sb->s_magic; - buf->f_bsize = PAGE_CACHE_SIZE; + buf->f_bsize = PAGE_SIZE; buf->f_namelen = NAME_MAX; return 0; } @@ -395,7 +395,7 @@ int simple_write_begin(struct file *file, struct address_space *mapping, struct page *page; pgoff_t index; - index = pos >> PAGE_CACHE_SHIFT; + index = pos >> PAGE_SHIFT; page = grab_cache_page_write_begin(mapping, index, flags); if (!page) @@ -403,10 +403,10 @@ int simple_write_begin(struct file *file, struct address_space *mapping, *pagep = page; - if (!PageUptodate(page) && (len != PAGE_CACHE_SIZE)) { - unsigned from = pos & (PAGE_CACHE_SIZE - 1); + if (!PageUptodate(page) && (len != PAGE_SIZE)) { + unsigned from = pos & (PAGE_SIZE - 1); - zero_user_segments(page, 0, from, from + len, PAGE_CACHE_SIZE); + zero_user_segments(page, 0, from, from + len, PAGE_SIZE); } return 0; } @@ -442,7 +442,7 @@ int simple_write_end(struct file *file, struct address_space *mapping, /* zero the stale part of the page if we did a short copy */ if (copied < len) { - unsigned from = pos & (PAGE_CACHE_SIZE - 1); + unsigned from = pos & (PAGE_SIZE - 1); zero_user(page, from + copied, len - copied); } @@ -458,7 +458,7 @@ int simple_write_end(struct file *file, struct address_space *mapping, set_page_dirty(page); unlock_page(page); - page_cache_release(page); + put_page(page); return copied; } @@ -477,8 +477,8 @@ int simple_fill_super(struct super_block *s, unsigned long magic, struct dentry *dentry; int i; - s->s_blocksize = PAGE_CACHE_SIZE; - s->s_blocksize_bits = PAGE_CACHE_SHIFT; + s->s_blocksize = PAGE_SIZE; + s->s_blocksize_bits = PAGE_SHIFT; s->s_magic = magic; s->s_op = &simple_super_operations; s->s_time_gran = 1; @@ -994,12 +994,12 @@ int generic_check_addressable(unsigned blocksize_bits, u64 num_blocks) { u64 last_fs_block = num_blocks - 1; u64 last_fs_page = - last_fs_block >> (PAGE_CACHE_SHIFT - blocksize_bits); + last_fs_block >> (PAGE_SHIFT - blocksize_bits); if (unlikely(num_blocks == 0)) return 0; - if ((blocksize_bits < 9) || (blocksize_bits > PAGE_CACHE_SHIFT)) + if ((blocksize_bits < 9) || (blocksize_bits > PAGE_SHIFT)) return -EINVAL; if ((last_fs_block > (sector_t)(~0ULL) >> (blocksize_bits - 9)) || |