Define a new function xfs_inode_dquot()

Define a new function xfs_inode_dquot() that takes a inode pointer
and a disk quota type and returns the quota pointer for the specified
quota type.

This simplifies the xfs_qm_dqget() error path significantly.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h
index 1c48489423e4..48a795b141b6 100644
--- a/fs/xfs/xfs_dquot.h
+++ b/fs/xfs/xfs_dquot.h
@@ -128,6 +128,19 @@ static inline int xfs_this_quota_on(struct xfs_mount *mp, int type)
         }
 }
 
+static inline xfs_dquot_t *xfs_inode_dquot(struct xfs_inode *ip, int type)
+{
+        switch (type & XFS_DQ_ALLTYPES) {
+        case XFS_DQ_USER:
+                return ip->i_udquot;
+        case XFS_DQ_GROUP:
+        case XFS_DQ_PROJ:
+                return ip->i_gdquot;
+        default:
+                return NULL;
+        }
+}
+
 #define XFS_DQ_IS_LOCKED(dqp)   (mutex_is_locked(&((dqp)->q_qlock)))
 #define XFS_DQ_IS_DIRTY(dqp)    ((dqp)->dq_flags & XFS_DQ_DIRTY)
 #define XFS_QM_ISUDQ(dqp)       ((dqp)->dq_flags & XFS_DQ_USER)