jim owens
2010-Mar-22 03:20 UTC
[PATCH V3 02/18] Btrfs: Do not limit RAID1 and DUP transfer length to one stripe.
The 65k stripe length should be ignored as the stripes are
physically contiguous on disk so transfers can span stripes.
Signed-off-by: jim owens <owens6336@gmail.com>
---
fs/btrfs/volumes.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 9df8e3f..8c8908c 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2711,13 +2711,13 @@ again:
/* stripe_offset is the offset of this block in its stripe*/
stripe_offset = offset - stripe_offset;
- if (map->type & (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 |
- BTRFS_BLOCK_GROUP_RAID10 |
- BTRFS_BLOCK_GROUP_DUP)) {
+ if (map->type & (BTRFS_BLOCK_GROUP_RAID0 |
+ BTRFS_BLOCK_GROUP_RAID10)) {
/* we limit the length of each bio to what fits in a stripe */
*length = min_t(u64, em->len - offset,
map->stripe_len - stripe_offset);
} else {
+ /* RAID1, DUP, and simple disk stripes are all contiguous */
*length = em->len - offset;
}
--
1.6.3.3
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