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| author | Alex Tomas <alex@clusterfs.com> | 2008-07-11 19:27:31 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2008-07-11 19:27:31 -0400 |
| commit | 29a814d2ee0e43c2980f33f91c1311ec06c0aa35 (patch) | |
| tree | dfc9d45fc3194237192b6cde1069faa70fe4c260 /include/linux/mpage.h | |
| parent | 87c89c232c8f7b3820c33c3b9bc803e9358027da (diff) | |
| download | linux-29a814d2ee0e43c2980f33f91c1311ec06c0aa35.tar.gz linux-29a814d2ee0e43c2980f33f91c1311ec06c0aa35.tar.bz2 linux-29a814d2ee0e43c2980f33f91c1311ec06c0aa35.zip | |
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/linux/mpage.h')
| -rw-r--r-- | include/linux/mpage.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/mpage.h b/include/linux/mpage.h index 068a0c9946af..5c42821da2d1 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, |