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authorJunchao Sun <sunjunchao2870@gmail.com>2024-06-07 22:30:21 +0800
committerDavid Sterba <dsterba@suse.com>2024-09-10 16:51:18 +0200
commit3cce39a8ca4e7565b6ac1fbcf858171bf07c3757 (patch)
treed4b39b6b9c5029c51ae0c1198821e844e6d5ef11 /fs/btrfs/qgroup.h
parent14ed830d10322007565af3a0da39948f229a72d6 (diff)
btrfs: qgroup: use xarray to track dirty extents in transaction
Use xarray to track dirty extents to reduce the size of the struct btrfs_qgroup_extent_record from 64 bytes to 40 bytes. The xarray is more cache line friendly, it also reduces the complexity of insertion and search code compared to rb tree. Another change introduced is about error handling. Before this patch, the result of btrfs_qgroup_trace_extent_nolock() is always a success. In this patch, because of this function calls the function xa_store() which has the possibility to fail, so mark qgroup as inconsistent if error happened and then free preallocated memory. Also we preallocate memory before spin_lock(), if memory preallcation failed, error handling is the same the existing code. Suggested-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Junchao Sun <sunjunchao2870@gmail.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/qgroup.h')
-rw-r--r--fs/btrfs/qgroup.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h
index deb479d176a9..98adf4ec7b01 100644
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -125,7 +125,6 @@ struct btrfs_inode;
* Record a dirty extent, and info qgroup to update quota on it
*/
struct btrfs_qgroup_extent_record {
- struct rb_node node;
u64 bytenr;
u64 num_bytes;