@@ -4287,7 +4287,7 @@ int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len)
/* Use new btrfs_qgroup_reserve_data to reserve precious data space. */
ret = btrfs_qgroup_reserve_data(inode, start, len);
- if (ret)
+ if (ret < 0)
btrfs_free_reserved_data_space_noquota(inode, start, len);
return ret;
}
@@ -190,7 +190,7 @@ struct extent_buffer {
*/
struct extent_changeset {
/* How many bytes are set/cleared in this operation */
- u64 bytes_changed;
+ unsigned int bytes_changed;
/* Changed ranges */
struct ulist range_changed;
@@ -2923,6 +2923,7 @@ static int __btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len,
btrfs_qgroup_free_refroot(BTRFS_I(inode)->root->fs_info,
BTRFS_I(inode)->root->objectid,
changeset.bytes_changed);
+ ret = changeset.bytes_changed;
out:
ulist_release(&changeset.range_changed);
return ret;
btrfs_qgroup_release/free_data() only returns 0 or minus error number(ENOMEM is the only possible error). This is normally good enough, but sometimes we need the accurate byte number it freed/released. Change it to return actually released/freed bytenr number instead of 0 for success. And slightly modify related extent_changeset structure, since in btrfs one none-hole data extent won't be larger than 128M, so "unsigned int" is large enough for the use case. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> --- fs/btrfs/extent-tree.c | 2 +- fs/btrfs/extent_io.h | 2 +- fs/btrfs/qgroup.c | 1 + 3 files changed, 3 insertions(+), 2 deletions(-)