diff options
| author | Christoph Hellwig <hch@lst.de> | 2010-06-04 11:29:56 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-08-09 16:47:31 -0400 |
| commit | f4e420dc423148fba637af1ab618fa8896dfb2d6 (patch) | |
| tree | df0e81f5f4b8448dd6b3929e5537dcc46e7d7dde /fs/ufs/dir.c | |
| parent | 282dc178849882289d30e58b54be6b2799b351aa (diff) | |
| download | linux-f4e420dc423148fba637af1ab618fa8896dfb2d6.tar.gz | |
clean up write_begin usage for directories in pagecache
For filesystem that implement directories in pagecache we call
block_write_begin with an already allocated page for this code, while the
normal regular file write path uses the default block_write_begin behaviour.
Get rid of the __foofs_write_begin helper and opencode the normal write_begin
call in foofs_write_begin, while adding a new foofs_prepare_chunk helper for
the directory code. The added benefit is that foofs_prepare_chunk has
a much saner calling convention.
Note that the interruptible flag passed into block_write_begin is always
ignored if we already pass in a page (see next patch for details), and
we never were doing truncations of exessive blocks for this case either so we
can switch directly to block_write_begin_newtrunc.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ufs/dir.c')
| -rw-r--r-- | fs/ufs/dir.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/fs/ufs/dir.c b/fs/ufs/dir.c index ec784756dc65..dbc90994715a 100644 --- a/fs/ufs/dir.c +++ b/fs/ufs/dir.c @@ -95,8 +95,7 @@ void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de, int err; lock_page(page); - err = __ufs_write_begin(NULL, page->mapping, pos, len, - AOP_FLAG_UNINTERRUPTIBLE, &page, NULL); + err = ufs_prepare_chunk(page, pos, len); BUG_ON(err); de->d_ino = cpu_to_fs32(dir->i_sb, inode->i_ino); @@ -381,8 +380,7 @@ int ufs_add_link(struct dentry *dentry, struct inode *inode) got_it: pos = page_offset(page) + (char*)de - (char*)page_address(page); - err = __ufs_write_begin(NULL, page->mapping, pos, rec_len, - AOP_FLAG_UNINTERRUPTIBLE, &page, NULL); + err = ufs_prepare_chunk(page, pos, rec_len); if (err) goto out_unlock; if (de->d_ino) { @@ -518,7 +516,6 @@ int ufs_delete_entry(struct inode *inode, struct ufs_dir_entry *dir, struct page * page) { struct super_block *sb = inode->i_sb; - struct address_space *mapping = page->mapping; char *kaddr = page_address(page); unsigned from = ((char*)dir - kaddr) & ~(UFS_SB(sb)->s_uspi->s_dirblksize - 1); unsigned to = ((char*)dir - kaddr) + fs16_to_cpu(sb, dir->d_reclen); @@ -549,8 +546,7 @@ int ufs_delete_entry(struct inode *inode, struct ufs_dir_entry *dir, pos = page_offset(page) + from; lock_page(page); - err = __ufs_write_begin(NULL, mapping, pos, to - from, - AOP_FLAG_UNINTERRUPTIBLE, &page, NULL); + err = ufs_prepare_chunk(page, pos, to - from); BUG_ON(err); if (pde) pde->d_reclen = cpu_to_fs16(sb, to - from); @@ -577,8 +573,7 @@ int ufs_make_empty(struct inode * inode, struct inode *dir) if (!page) return -ENOMEM; - err = __ufs_write_begin(NULL, mapping, 0, chunk_size, - AOP_FLAG_UNINTERRUPTIBLE, &page, NULL); + err = ufs_prepare_chunk(page, 0, chunk_size); if (err) { unlock_page(page); goto fail; |