xfs: create convenience wrappers for incore quota block reservations

Create a couple of convenience wrappers for creating and deleting quota
block reservations against future changes.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h
index 5a62398940d0..1d1a1634ea29 100644
--- a/fs/xfs/xfs_quota.h
+++ b/fs/xfs/xfs_quota.h
@@ -108,6 +108,12 @@ extern void xfs_qm_mount_quotas(struct xfs_mount *);
 extern void xfs_qm_unmount(struct xfs_mount *);
 extern void xfs_qm_unmount_quotas(struct xfs_mount *);
 
+static inline int
+xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
+{
+	return xfs_trans_reserve_quota_nblks(NULL, ip, blocks, 0,
+			XFS_QMOPT_RES_REGBLKS);
+}
 #else
 static inline int
 xfs_qm_vop_dqalloc(struct xfs_inode *ip, kuid_t kuid, kgid_t kgid,
@@ -136,6 +142,13 @@ static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp,
 {
 	return 0;
 }
+
+static inline int
+xfs_quota_reserve_blkres(struct xfs_inode *ip, int64_t blocks)
+{
+	return 0;
+}
+
 #define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
 #define xfs_qm_vop_rename_dqattach(it)					(0)
 #define xfs_qm_vop_chown(tp, ip, old, new)				(NULL)
@@ -157,6 +170,12 @@ static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp,
 	xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, pd, nb, ni, \
 				f | XFS_QMOPT_RES_REGBLKS)
 
+static inline int
+xfs_quota_unreserve_blkres(struct xfs_inode *ip, int64_t blocks)
+{
+	return xfs_quota_reserve_blkres(ip, -blocks);
+}
+
 extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
 
 #endif	/* __XFS_QUOTA_H__ */