diff options
| author | Chris Mason <chris.mason@fusionio.com> | 2013-01-04 21:39:43 +0100 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2013-02-01 20:24:24 +0100 |
| commit | 8de972b4faa4be9b2a3c53103e18d86092a5da45 (patch) | |
| tree | c81436a4a777362f27d6982d8eed904c4131ba40 | |
| parent | Btrfs: add a plugging callback to raid56 writes (diff) | |
| download | linux-8de972b4faa4be9b2a3c53103e18d86092a5da45.tar.xz linux-8de972b4faa4be9b2a3c53103e18d86092a5da45.zip | |
Btrfs: fix cluster alignment for mount -o ssd
With the new raid56 code, we want to make sure we're
properly aligning our allocation clusters with -o ssd
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| -rw-r--r-- | fs/btrfs/extent-tree.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 3345f68fc64b..f13402104c96 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -5715,6 +5715,7 @@ have_block_group: * lets look there */ if (last_ptr) { + unsigned long aligned_cluster; /* * the refill lock keeps out other * people trying to start a new cluster @@ -5781,11 +5782,15 @@ refill_cluster: goto unclustered_alloc; } + aligned_cluster = max_t(unsigned long, + empty_cluster + empty_size, + block_group->full_stripe_len); + /* allocate a cluster in this block group */ ret = btrfs_find_space_cluster(trans, root, block_group, last_ptr, search_start, num_bytes, - empty_cluster + empty_size); + aligned_cluster); if (ret == 0) { /* * now pull our allocation out of this |