From 64cfaef6362fc756972f477372997fbe117d79cb Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Tue, 12 Dec 2017 15:34:31 +0800 Subject: btrfs: qgroup: Introduce function to convert META_PREALLOC into META_PERTRANS For meta_prealloc reservation users, after btrfs_join_transaction() caller will modify tree so part (or even all) meta_prealloc reservation should be converted to meta_pertrans until transaction commit time. This patch introduces a new function, btrfs_qgroup_convert_reserved_meta() to do this for META_PREALLOC reservation user. Signed-off-by: Qu Wenruo Signed-off-by: David Sterba --- fs/btrfs/qgroup.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'fs/btrfs/qgroup.h') diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h index 987a5a49deb8..e63e2d497a8e 100644 --- a/fs/btrfs/qgroup.h +++ b/fs/btrfs/qgroup.h @@ -332,5 +332,13 @@ static inline void btrfs_qgroup_free_meta_prealloc(struct btrfs_root *root, */ void btrfs_qgroup_free_meta_all_pertrans(struct btrfs_root *root); +/* + * Convert @num_bytes of META_PREALLOCATED reservation to META_PERTRANS. + * + * This is called when preallocated meta reservation needs to be used. + * Normally after btrfs_join_transaction() call. + */ +void btrfs_qgroup_convert_reserved_meta(struct btrfs_root *root, int num_bytes); + void btrfs_qgroup_check_reserved_leak(struct inode *inode); #endif /* __BTRFS_QGROUP__ */ -- cgit v1.2.3