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| author | Christoph Hellwig <hch@lst.de> | 2007-09-10 20:02:33 -0400 |
|---|---|---|
| committer | David Woodhouse <dwmw2@hera.kernel.org> | 2007-09-10 20:02:33 -0400 |
| commit | 0e2752a72cb37075b24899f01e9bc6a589de3b6c (patch) | |
| tree | 63bd02f3ba81018ffa0178f6f0982defd33b1d99 | |
| parent | b06355f0fe04a62d08238438654ec453e05304ba (diff) | |
| download | op-kernel-dev-0e2752a72cb37075b24899f01e9bc6a589de3b6c.zip op-kernel-dev-0e2752a72cb37075b24899f01e9bc6a589de3b6c.tar.gz | |
Btrfs: [PATCH] extent_map: add writepage_end_io hook
XFS updates the ondisk inode size only after the data I/O has finished,
so it needs a hook when the writepage end_bio handler has finished.
Might not be worth applying as-is as the per-page callback is very
ineffcient. What XFS really wants is a callback when writeout of a
whole extent has completed. This delayed i_size updates scheme might
be worthwile for btrfs aswell, btw.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
| -rw-r--r-- | fs/btrfs/extent_map.c | 2 | ||||
| -rw-r--r-- | fs/btrfs/extent_map.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index 1627667..ab5bde31 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -1231,6 +1231,8 @@ static int end_bio_extent_writepage(struct bio *bio, end_page_writeback(page); else check_page_writeback(tree, page); + if (tree->ops && tree->ops->writepage_end_io_hook) + tree->ops->writepage_end_io_hook(page, start, end); } while (bvec >= bio->bi_io_vec); bio_put(bio); diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h index da41aca..40b53ee2 100644 --- a/fs/btrfs/extent_map.h +++ b/fs/btrfs/extent_map.h @@ -11,6 +11,7 @@ struct extent_map_ops { int (*writepage_io_hook)(struct page *page, u64 start, u64 end); int (*readpage_io_hook)(struct page *page, u64 start, u64 end); int (*readpage_end_io_hook)(struct page *page, u64 start, u64 end); + void (*writepage_end_io_hook)(struct page *page, u64 start, u64 end); }; struct extent_map_tree { |
