Commit 7bc329c1 authored by Qu Wenruo's avatar Qu Wenruo Committed by David Sterba

btrfs: qgroup: Return actually freed bytes for qgroup release or free data

btrfs_qgroup_release/free_data() only returns 0 or a negative error
number (ENOMEM is the only possible error).

This is normally good enough, but sometimes we need the exact byte
count 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 no-hole data extent won't be larger than 128M, so "unsigned int"
is large enough for the use case.
Signed-off-by: default avatarQu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent d1b8b94a
...@@ -4347,7 +4347,7 @@ int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len) ...@@ -4347,7 +4347,7 @@ int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len)
/* Use new btrfs_qgroup_reserve_data to reserve precious data space. */ /* Use new btrfs_qgroup_reserve_data to reserve precious data space. */
ret = btrfs_qgroup_reserve_data(inode, start, len); ret = btrfs_qgroup_reserve_data(inode, start, len);
if (ret) if (ret < 0)
btrfs_free_reserved_data_space_noquota(inode, start, len); btrfs_free_reserved_data_space_noquota(inode, start, len);
return ret; return ret;
} }
......
...@@ -209,7 +209,7 @@ struct extent_buffer { ...@@ -209,7 +209,7 @@ struct extent_buffer {
*/ */
struct extent_changeset { struct extent_changeset {
/* How many bytes are set/cleared in this operation */ /* How many bytes are set/cleared in this operation */
u64 bytes_changed; unsigned int bytes_changed;
/* Changed ranges */ /* Changed ranges */
struct ulist range_changed; struct ulist range_changed;
......
...@@ -2897,6 +2897,7 @@ static int __btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len, ...@@ -2897,6 +2897,7 @@ static int __btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len,
btrfs_qgroup_free_refroot(BTRFS_I(inode)->root->fs_info, btrfs_qgroup_free_refroot(BTRFS_I(inode)->root->fs_info,
BTRFS_I(inode)->root->objectid, BTRFS_I(inode)->root->objectid,
changeset.bytes_changed); changeset.bytes_changed);
ret = changeset.bytes_changed;
out: out:
ulist_release(&changeset.range_changed); ulist_release(&changeset.range_changed);
return ret; return ret;
......
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