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btrfs: don't BUG_ON allocation errors in btrfs_drop_snapshot 

In addition to properly handling allocation failure from btrfs_alloc_path, I
also fixed up the kzalloc error handling code immediately below it.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Mark Fasheh 2011-07-13 10:59:59 -07:00
parent 92b8e897f6
commit 38a1a91953
1 changed files with 6 additions and 2 deletions
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8
fs/btrfs/extent-tree.c
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@ -6272,10 +6272,14 @@ int btrfs_drop_snapshot(struct btrfs_root *root,
int level;
path = btrfs_alloc_path();
BUG_ON(!path);
if (!path)
return -ENOMEM;
wc = kzalloc(sizeof(*wc), GFP_NOFS);
BUG_ON(!wc);
if (!wc) {
btrfs_free_path(path);
return -ENOMEM;
}
trans = btrfs_start_transaction(tree_root, 0);
BUG_ON(IS_ERR(trans));