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authorChris Mason <chris.mason@oracle.com>2007-08-07 16:15:09 -0400
committerDavid Woodhouse <dwmw2@hera.kernel.org>2007-08-07 16:15:09 -0400
commit6702ed490ca0bb44e17131818a5a18b773957c5a (patch)
treef6bc4b77e58506a68f1ab539ca6c96854f39f92d /fs/btrfs/ioctl.h
parent3c69faecb8d83cb2ef085a98b196a3fecea67725 (diff)
Btrfs: Add run time btree defrag, and an ioctl to force btree defrag
This adds two types of btree defrag, a run time form that tries to defrag recently allocated blocks in the btree when they are still in ram, and an ioctl that forces defrag of all btree blocks. File data blocks are not defragged yet, but this can make a huge difference in sequential btree reads. Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ioctl.h')
-rw-r--r--fs/btrfs/ioctl.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
index 23bed48c51a7..8bc47dec2865 100644
--- a/fs/btrfs/ioctl.h
+++ b/fs/btrfs/ioctl.h
@@ -28,6 +28,6 @@ struct btrfs_ioctl_vol_args {
#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
struct btrfs_ioctl_vol_args)
-#define BTRFS_IOC_ADD_DISK _IOW(BTRFS_IOCTL_MAGIC, 2, \
+#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
struct btrfs_ioctl_vol_args)
#endif