summaryrefslogtreecommitdiff
path: root/include/linux/buffer_head.h
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2010-06-04 11:29:57 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2010-08-09 16:47:32 -0400
commit6e1db88d536adcbbfe562b2d4b7d6425784fff12 (patch)
tree8cfcb5a6190722db6249b2e4978f39247975abcf /include/linux/buffer_head.h
parentf4e420dc423148fba637af1ab618fa8896dfb2d6 (diff)
introduce __block_write_begin
Split up the block_write_begin implementation - __block_write_begin is a new trivial wrapper for block_prepare_write that always takes an already allocated page and can be either called from block_write_begin or filesystem code that already has a page allocated. Remove the handling of already allocated pages from block_write_begin after switching all callers that do it to __block_write_begin. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/buffer_head.h')
-rw-r--r--include/linux/buffer_head.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 7638647f0424..accc9f81bb63 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -209,6 +209,8 @@ int block_write_begin_newtrunc(struct file *, struct address_space *,
int block_write_begin(struct file *, struct address_space *,
loff_t, unsigned, unsigned,
struct page **, void **, get_block_t*);
+int __block_write_begin(struct page *page, loff_t pos, unsigned len,
+ get_block_t *get_block);
int block_write_end(struct file *, struct address_space *,
loff_t, unsigned, unsigned,
struct page *, void *);