diff options
| -rw-r--r-- | fs/btrfs/file-item.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index edb69b4d5335..89af104c7569 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -284,6 +284,7 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, struct btrfs_ordered_sum *sums; struct btrfs_sector_sum *sector_sum; struct btrfs_csum_item *item; + LIST_HEAD(tmplist); unsigned long offset; int ret; size_t size; @@ -358,7 +359,10 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, MAX_ORDERED_SUM_BYTES(root)); sums = kzalloc(btrfs_ordered_sum_size(root, size), GFP_NOFS); - BUG_ON(!sums); + if (!sums) { + ret = -ENOMEM; + goto fail; + } sector_sum = sums->sums; sums->bytenr = start; @@ -380,12 +384,19 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, offset += csum_size; sector_sum++; } - list_add_tail(&sums->list, list); + list_add_tail(&sums->list, &tmplist); } path->slots[0]++; } ret = 0; fail: + while (ret < 0 && !list_empty(&tmplist)) { + sums = list_entry(&tmplist, struct btrfs_ordered_sum, list); + list_del(&sums->list); + kfree(sums); + } + list_splice_tail(&tmplist, list); + btrfs_free_path(path); return ret; } |