xfs: hoist xfs_{bump,drop}link to libxfs

Move xfs_bumplink and xfs_droplink to libxfs.

Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>

Author: Darrick J. Wong

fs/xfs/libxfs/xfs_inode_util.c

@@ -626,3 +626,56 @@ xfs_iunlink_remove(
 
 	return xfs_iunlink_remove_inode(tp, pag, agibp, ip);
 }
+
+/*
+ * Decrement the link count on an inode & log the change.  If this causes the
+ * link count to go to zero, move the inode to AGI unlinked list so that it can
+ * be freed when the last active reference goes away via xfs_inactive().
+ */
+int
+xfs_droplink(
+	struct xfs_trans	*tp,
+	struct xfs_inode	*ip)
+{
+	struct inode		*inode = VFS_I(ip);
+
+	xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
+
+	if (inode->i_nlink == 0) {
+		xfs_info_ratelimited(tp->t_mountp,
+ "Inode 0x%llx link count dropped below zero.  Pinning link count.",
+				ip->i_ino);
+		set_nlink(inode, XFS_NLINK_PINNED);
+	}
+	if (inode->i_nlink != XFS_NLINK_PINNED)
+		drop_nlink(inode);
+
+	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+
+	if (inode->i_nlink)
+		return 0;
+
+	return xfs_iunlink(tp, ip);
+}
+
+/*
+ * Increment the link count on an inode & log the change.
+ */
+void
+xfs_bumplink(
+	struct xfs_trans	*tp,
+	struct xfs_inode	*ip)
+{
+	struct inode		*inode = VFS_I(ip);
+
+	xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
+
+	if (inode->i_nlink == XFS_NLINK_PINNED - 1)
+		xfs_info_ratelimited(tp->t_mountp,
+ "Inode 0x%llx link count exceeded maximum.  Pinning link count.",
+				ip->i_ino);
+	if (inode->i_nlink != XFS_NLINK_PINNED)
+		inc_nlink(inode);
+
+	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+}

fs/xfs/libxfs/xfs_inode_util.h

@@ -50,5 +50,7 @@ void xfs_inode_init(struct xfs_trans *tp, const struct xfs_icreate_args *args,
 int xfs_iunlink(struct xfs_trans *tp, struct xfs_inode *ip);
 int xfs_iunlink_remove(struct xfs_trans *tp, struct xfs_perag *pag,
 		struct xfs_inode *ip);
+int xfs_droplink(struct xfs_trans *tp, struct xfs_inode *ip);
+void xfs_bumplink(struct xfs_trans *tp, struct xfs_inode *ip);
 
 #endif /* __XFS_INODE_UTIL_H__ */

fs/xfs/xfs_inode.c

@@ -600,59 +600,6 @@ xfs_icreate(
 	return 0;
 }
 
-/*
- * Decrement the link count on an inode & log the change.  If this causes the
- * link count to go to zero, move the inode to AGI unlinked list so that it can
- * be freed when the last active reference goes away via xfs_inactive().
- */
-int
-xfs_droplink(
-	struct xfs_trans	*tp,
-	struct xfs_inode	*ip)
-{
-	struct inode		*inode = VFS_I(ip);
-
-	xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
-
-	if (inode->i_nlink == 0) {
-		xfs_info_ratelimited(tp->t_mountp,
- "Inode 0x%llx link count dropped below zero.  Pinning link count.",
-				ip->i_ino);
-		set_nlink(inode, XFS_NLINK_PINNED);
-	}
-	if (inode->i_nlink != XFS_NLINK_PINNED)
-		drop_nlink(inode);
-
-	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
-
-	if (inode->i_nlink)
-		return 0;
-
-	return xfs_iunlink(tp, ip);
-}
-
-/*
- * Increment the link count on an inode & log the change.
- */
-void
-xfs_bumplink(
-	struct xfs_trans	*tp,
-	struct xfs_inode	*ip)
-{
-	struct inode		*inode = VFS_I(ip);
-
-	xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
-
-	if (inode->i_nlink == XFS_NLINK_PINNED - 1)
-		xfs_info_ratelimited(tp->t_mountp,
- "Inode 0x%llx link count exceeded maximum.  Pinning link count.",
-				ip->i_ino);
-	if (inode->i_nlink != XFS_NLINK_PINNED)
-		inc_nlink(inode);
-
-	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
-}
-
 #ifdef CONFIG_XFS_LIVE_HOOKS
 /*
  * Use a static key here to reduce the overhead of directory live update hooks.

fs/xfs/xfs_inode.h

@@ -615,8 +615,6 @@ void xfs_end_io(struct work_struct *work);
 int xfs_ilock2_io_mmap(struct xfs_inode *ip1, struct xfs_inode *ip2);
 void xfs_iunlock2_io_mmap(struct xfs_inode *ip1, struct xfs_inode *ip2);
 void xfs_iunlock2_remapping(struct xfs_inode *ip1, struct xfs_inode *ip2);
-int xfs_droplink(struct xfs_trans *tp, struct xfs_inode *ip);
-void xfs_bumplink(struct xfs_trans *tp, struct xfs_inode *ip);
 void xfs_lock_inodes(struct xfs_inode **ips, int inodes, uint lock_mode);
 void xfs_sort_inodes(struct xfs_inode **i_tab, unsigned int num_inodes);