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Btrfs: deal with NULL srv_rsv in the delalloc inode reservation code

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btrfs_update_inode is sometimes called with a null reservation.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2011-12-15 13:36:29 -05:00
parent ad19db71f4
commit e755d9ab38
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/delayed-inode.c
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@ -640,8 +640,8 @@ static int btrfs_delayed_inode_reserve_metadata(
* Now if src_rsv == delalloc_block_rsv we'll let it just steal since
* we're accounted for.
*/
if (!trans->bytes_reserved &&
src_rsv != &root->fs_info->delalloc_block_rsv) {
if (!src_rsv || (!trans->bytes_reserved &&
src_rsv != &root->fs_info->delalloc_block_rsv)) {
ret = btrfs_block_rsv_add_noflush(root, dst_rsv, num_bytes);
/*
* Since we're under a transaction reserve_metadata_bytes could