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Btrfs: Add check for null block group to find_search_start 

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2007-11-26 10:55:49 -05:00
parent 7073c8e852
commit 0e4de58432
1 changed files with 3 additions and 0 deletions
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3
fs/btrfs/extent-tree.c
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@ -204,6 +204,7 @@ new_group:
wrapped:
cache = btrfs_lookup_block_group(root->fs_info, last);
if (!cache) {
no_cache:
if (!wrapped) {
wrapped = 1;
last = search_start;
@ -219,6 +220,8 @@ wrapped:
}
if (!full_scan)
cache = btrfs_find_block_group(root, cache, last, data, 0);
if (!cache)
goto no_cache;
*cache_ret = cache;
cache_miss = 0;
goto again;