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authorAlex Tomas <alex@clusterfs.com>2008-07-11 19:27:31 -0400
committerTheodore Ts'o <tytso@mit.edu>2008-07-11 19:27:31 -0400
commit29a814d2ee0e43c2980f33f91c1311ec06c0aa35 (patch)
treedfc9d45fc3194237192b6cde1069faa70fe4c260 /include
parent87c89c232c8f7b3820c33c3b9bc803e9358027da (diff)
vfs: add hooks for ext4's delayed allocation support
Export mpage_bio_submit() and __mpage_writepage() for the benefit of ext4's delayed allocation support. Also change __block_write_full_page so that if buffers that have the BH_Delay flag set it will call get_block() to get the physical block allocated, just as in the !BH_Mapped case. Signed-off-by: Alex Tomas <alex@clusterfs.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mpage.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/mpage.h b/include/linux/mpage.h
index 068a0c9946a..5c42821da2d 100644
--- a/include/linux/mpage.h
+++ b/include/linux/mpage.h
@@ -11,11 +11,21 @@
*/
#ifdef CONFIG_BLOCK
+struct mpage_data {
+ struct bio *bio;
+ sector_t last_block_in_bio;
+ get_block_t *get_block;
+ unsigned use_writepage;
+};
+
struct writeback_control;
+struct bio *mpage_bio_submit(int rw, struct bio *bio);
int mpage_readpages(struct address_space *mapping, struct list_head *pages,
unsigned nr_pages, get_block_t get_block);
int mpage_readpage(struct page *page, get_block_t get_block);
+int __mpage_writepage(struct page *page, struct writeback_control *wbc,
+ void *data);
int mpage_writepages(struct address_space *mapping,
struct writeback_control *wbc, get_block_t get_block);
int mpage_writepage(struct page *page, get_block_t *get_block,