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Btrfs: start search for new cluster at the beginning

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Instead of starting at zero (offset is always zero), request a cluster
starting at search_start, that denotes the beginning of the current
block group.

Signed-off-by: Alexandre Oliva <oliva@lsd.ic.unicamp.br>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Alexandre Oliva
2011-11-30 13:43:00 -05:00
committed by Chris Mason
parent b78d09bceb
commit 1b22bad779
1 changed files with 2 additions and 4 deletions
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6
fs/btrfs/extent-tree.c
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@@ -5301,10 +5301,8 @@ alloc:
spin_lock(&last_ptr->refill_lock); spin_lock(&last_ptr->refill_lock);
if (last_ptr->block_group && if (last_ptr->block_group &&
(last_ptr->block_group->ro || (last_ptr->block_group->ro ||
!block_group_bits(last_ptr->block_group, data))) { !block_group_bits(last_ptr->block_group, data)))
offset = 0;
goto refill_cluster; goto refill_cluster;
}
offset = btrfs_alloc_from_cluster(block_group, last_ptr, offset = btrfs_alloc_from_cluster(block_group, last_ptr,
num_bytes, search_start); num_bytes, search_start);
@@ -5355,7 +5353,7 @@ refill_cluster:
/* allocate a cluster in this block group */ /* allocate a cluster in this block group */
ret = btrfs_find_space_cluster(trans, root, ret = btrfs_find_space_cluster(trans, root,
block_group, last_ptr, block_group, last_ptr,
offset, num_bytes, search_start, num_bytes,
empty_cluster + empty_size); empty_cluster + empty_size);
if (ret == 0) { if (ret == 0) {
/* /*