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authorNick Piggin <npiggin@suse.de>2007-10-16 12:25:01 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 20:42:55 +0400
commitafddba49d18f346e5cc2938b6ed7c512db18ca68 (patch)
tree4726e3d3b0e9e8e5b5d3b2b0cccb36446bbdf3ca /include/linux/buffer_head.h
parent637aff46f94a754207c80c8c64bf1b74f24b967d (diff)
downloadlinux-afddba49d18f346e5cc2938b6ed7c512db18ca68.tar.xz
fs: introduce write_begin, write_end, and perform_write aops
These are intended to replace prepare_write and commit_write with more flexible alternatives that are also able to avoid the buffered write deadlock problems efficiently (which prepare_write is unable to do). [mark.fasheh@oracle.com: API design contributions, code review and fixes] [akpm@linux-foundation.org: various fixes] [dmonakhov@sw.ru: new aop block_write_begin fix] Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Dmitriy Monakhov <dmonakhov@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/buffer_head.h')
-rw-r--r--include/linux/buffer_head.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 35cadad84b14..a562ecfb1a14 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -203,6 +203,16 @@ void block_invalidatepage(struct page *page, unsigned long offset);
int block_write_full_page(struct page *page, get_block_t *get_block,
struct writeback_control *wbc);
int block_read_full_page(struct page*, get_block_t*);
+int block_write_begin(struct file *, struct address_space *,
+ loff_t, unsigned, unsigned,
+ struct page **, void **, get_block_t*);
+int block_write_end(struct file *, struct address_space *,
+ loff_t, unsigned, unsigned,
+ struct page *, void *);
+int generic_write_end(struct file *, struct address_space *,
+ loff_t, unsigned, unsigned,
+ struct page *, void *);
+void page_zero_new_buffers(struct page *page, unsigned from, unsigned to);
int block_prepare_write(struct page*, unsigned, unsigned, get_block_t*);
int cont_prepare_write(struct page*, unsigned, unsigned, get_block_t*,
loff_t *);