AcoSail/kernel_optimize_test
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Btrfs: don't call btrfs_qgroup_free if just btrfs_qgroup_reserve fails

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commit eb6b88d92c leads into another bug.
If it is just because qgroup_reserve fails, the function btrfs_qgroup_free
should not be called, otherwise, it will cause the wrong quota accounting.

Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
This commit is contained in:
Wang Shilong 2013-03-01 11:33:01 +00:00 committed by Josef Bacik
parent 235fdb8ef2
commit a9870c0e03
1 changed files with 6 additions and 5 deletions
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11
fs/btrfs/extent-tree.c
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@ -4772,9 +4772,14 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
* ret != 0 here means the qgroup reservation failed, we go straight to
* the shared error handling then.
*/
if (ret == 0)
if (ret == 0) {
ret = reserve_metadata_bytes(root, block_rsv,
to_reserve, flush);
if (ret && root->fs_info->quota_enabled) {
btrfs_qgroup_free(root, num_bytes +
nr_extents * root->leafsize);
}
}
if (ret) {
u64 to_free = 0;
@ -4805,10 +4810,6 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
btrfs_ino(inode),
to_free, 0);
}
if (root->fs_info->quota_enabled) {
btrfs_qgroup_free(root, num_bytes +
nr_extents * root->leafsize);
}
if (delalloc_lock)
mutex_unlock(&BTRFS_I(inode)->delalloc_mutex);
return ret;