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authorMiao Xie <miaox@cn.fujitsu.com>2011-01-05 05:07:26 -0500
committerChris Mason <chris.mason@oracle.com>2011-01-16 11:30:19 -0500
commit7bfc837df935d850fe996dfe92ef48975cd4170a (patch)
tree8ca5f83c0c43e505b872368877504fa95c6276ab /fs/btrfs/extent-tree.c
parent1974a3b42d8cf7a9c74f1e0310c593023617037a (diff)
btrfs: restructure find_free_dev_extent()
- make it return the start position and length of the max free space when it can not find a suitable free space. - make it more readability Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r--fs/btrfs/extent-tree.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 3c71d95111fe..1e1c9a177626 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8099,7 +8099,7 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
8099 mutex_lock(&root->fs_info->chunk_mutex); 8099 mutex_lock(&root->fs_info->chunk_mutex);
8100 list_for_each_entry(device, &fs_devices->alloc_list, dev_alloc_list) { 8100 list_for_each_entry(device, &fs_devices->alloc_list, dev_alloc_list) {
8101 u64 min_free = btrfs_block_group_used(&block_group->item); 8101 u64 min_free = btrfs_block_group_used(&block_group->item);
8102 u64 dev_offset, max_avail; 8102 u64 dev_offset;
8103 8103
8104 /* 8104 /*
8105 * check to make sure we can actually find a chunk with enough 8105 * check to make sure we can actually find a chunk with enough
@@ -8107,7 +8107,7 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
8107 */ 8107 */
8108 if (device->total_bytes > device->bytes_used + min_free) { 8108 if (device->total_bytes > device->bytes_used + min_free) {
8109 ret = find_free_dev_extent(NULL, device, min_free, 8109 ret = find_free_dev_extent(NULL, device, min_free,
8110 &dev_offset, &max_avail); 8110 &dev_offset, NULL);
8111 if (!ret) 8111 if (!ret)
8112 break; 8112 break;
8113 ret = -1; 8113 ret = -1;