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authorLiu Bo <bo.li.liu@oracle.com>2012-11-21 18:18:10 +0400
committerChris Mason <chris.mason@fusionio.com>2012-12-17 05:46:28 +0400
commit31e502298d80e2af9001d17dc419a3fd4b0bebef (patch)
tree24606ea4998e962fff864eb24e8be6f56b095e14 /fs/btrfs/volumes.h
parent4ded4f639533ed5f02a0f0ab20d43bb9659c91f8 (diff)
downloadlinux-31e502298d80e2af9001d17dc419a3fd4b0bebef.tar.xz
Btrfs: put raid properties into global table
Raid properties can be shared among raid calculation code, we can put them into a global table to keep it simple. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs/volumes.h')
-rw-r--r--fs/btrfs/volumes.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 37d0157167b0..d3c3939ac751 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -180,6 +180,15 @@ struct btrfs_device_info {
u64 total_avail;
};
+struct btrfs_raid_attr {
+ int sub_stripes; /* sub_stripes info for map */
+ int dev_stripes; /* stripes per dev */
+ int devs_max; /* max devs to use */
+ int devs_min; /* min devs needed */
+ int devs_increment; /* ndevs has to be a multiple of this */
+ int ncopies; /* how many copies to data has */
+};
+
struct map_lookup {
u64 type;
int io_align;