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| author | Arne Jansen | 2011-06-10 13:55:54 +0200 |
|---|---|---|
| committer | Arne Jansen | 2011-10-02 08:48:44 +0200 |
| commit | 4bb31e928d1a47f5bd046ecb176b8eff7c589fc0 (patch) | |
| tree | 61693e91f7a179b75cc43f5bcb504d50a342ecb7 /fs/btrfs/extent_io.c | |
| parent | btrfs: initial readahead code and prototypes (diff) | |
| download | kernel-qcow2-linux-4bb31e928d1a47f5bd046ecb176b8eff7c589fc0.tar.gz kernel-qcow2-linux-4bb31e928d1a47f5bd046ecb176b8eff7c589fc0.tar.xz kernel-qcow2-linux-4bb31e928d1a47f5bd046ecb176b8eff7c589fc0.zip | |
btrfs: hooks for readahead
This adds the hooks needed for readahead. In the readpage_end_io_hook,
the extent state is checked for the EXTENT_READAHEAD flag. Only in this
case the readahead hook is called, to keep the impact on non-ra as low
as possible.
Additionally, a hook for a failed IO is added, otherwise readahead would
wait indefinitely for the extent to finish.
Changes for v2:
- eliminate race condition
Signed-off-by: Arne Jansen <sensille@gmx.net>
Diffstat (limited to 'fs/btrfs/extent_io.c')
| -rw-r--r-- | fs/btrfs/extent_io.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 823028e73cf8..deba714236d7 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -1731,7 +1731,7 @@ static void end_bio_extent_readpage(struct bio *bio, int err) if (!uptodate && tree->ops && tree->ops->readpage_io_failed_hook) { ret = tree->ops->readpage_io_failed_hook(bio, page, - start, end, NULL); + start, end, state); if (ret == 0) { uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); |