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btrfs: kill unused writepage_io_hook callback

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It seems to be long time unused, since 2008 and
6885f308b5 ("Btrfs: Misc 2.6.25 updates").

Propagating the removal touches some code but has no functional effect.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba
2016-05-04 11:46:10 +02:00
parent ad8403df05
commit 58409edd2d
2 changed files with 16 additions and 24 deletions
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1
fs/btrfs/extent_io.h
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@@ -71,7 +71,6 @@ struct extent_io_ops {
u64 start, u64 end, int *page_started,
unsigned long *nr_written);
int (*writepage_start_hook)(struct page *page, u64 start, u64 end);
int (*writepage_io_hook)(struct page *page, u64 start, u64 end);
extent_submit_bio_hook_t *submit_bio_hook;
int (*merge_bio_hook)(int rw, struct page *page, unsigned long offset,
size_t size, struct bio *bio,