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| author | Chris Mason <chris.mason@oracle.com> | 2007-05-18 13:28:27 -0400 |
|---|---|---|
| committer | David Woodhouse <dwmw2@hera.kernel.org> | 2007-05-18 13:28:27 -0400 |
| commit | de428b63b16f9c74a24228a517713e8c65f79475 (patch) | |
| tree | 0bb56423173f59e6237cf0cbc8052f72fb997347 /fs/btrfs/disk-io.c | |
| parent | 098f59c2512426926722a96f82af127bd91fb5e4 (diff) | |
| download | talos-op-linux-de428b63b16f9c74a24228a517713e8c65f79475.tar.gz talos-op-linux-de428b63b16f9c74a24228a517713e8c65f79475.zip | |
Btrfs: allocator optimizations, truncate readahead
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 678456d1e2f9..4c0262b57664 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -257,24 +257,30 @@ static struct address_space_operations btree_aops = { int readahead_tree_block(struct btrfs_root *root, u64 blocknr) { struct buffer_head *bh = NULL; + int ret = 0; bh = btrfs_find_create_tree_block(root, blocknr); if (!bh) return 0; - if (buffer_uptodate(bh)) + if (buffer_uptodate(bh)) { + ret = 1; goto done; - if (test_set_buffer_locked(bh)) + } + if (test_set_buffer_locked(bh)) { + ret = 1; goto done; + } if (!buffer_uptodate(bh)) { get_bh(bh); bh->b_end_io = end_buffer_read_sync; submit_bh(READ, bh); } else { unlock_buffer(bh); + ret = 1; } done: brelse(bh); - return 0; + return ret; } struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr) |
