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| author | Chris Mason <chris.mason@oracle.com> | 2007-08-10 14:42:37 -0400 |
|---|---|---|
| committer | David Woodhouse <dwmw2@hera.kernel.org> | 2007-08-10 14:42:37 -0400 |
| commit | f2183bde1a918d338337955c8e8ba29bd8f5e7b1 (patch) | |
| tree | e27baea3779112618d2158902270c460444feeff /fs/btrfs/disk-io.h | |
| parent | e9d0b13b5bbb58c9b840e407a8d181442f799966 (diff) | |
| download | kernel_samsung_smdk4412-f2183bde1a918d338337955c8e8ba29bd8f5e7b1.zip kernel_samsung_smdk4412-f2183bde1a918d338337955c8e8ba29bd8f5e7b1.tar.gz kernel_samsung_smdk4412-f2183bde1a918d338337955c8e8ba29bd8f5e7b1.tar.bz2 | |
Btrfs: Add BH_Defrag to mark buffers that are in need of defragging
This allows the tree walking code to defrag only the newly allocated
buffers, it seems to be a good balance between perfect defragging and the
performance hit of repeatedly reallocating blocks.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/disk-io.h')
| -rw-r--r-- | fs/btrfs/disk-io.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h index 9e2c261..81fd18c 100644 --- a/fs/btrfs/disk-io.h +++ b/fs/btrfs/disk-io.h @@ -25,8 +25,10 @@ enum btrfs_bh_state_bits { BH_Checked = BH_PrivateStart, + BH_Defrag, }; BUFFER_FNS(Checked, checked); +BUFFER_FNS(Defrag, defrag); static inline struct btrfs_node *btrfs_buffer_node(struct buffer_head *bh) { |