[PATCH 16/29] xfs: add nowait parameter for xfs_inode_item_init()

[Hao Xu]

From: Hao Xu <howeyxu at tencent.com>

Add nowait parameter for xfs_inode_item_init() to support nowait
semantics.

Signed-off-by: Hao Xu <howeyxu at tencent.com>
---
 fs/xfs/libxfs/xfs_trans_inode.c |  3 ++-
 fs/xfs/xfs_inode_item.c         | 12 ++++++++----
 fs/xfs/xfs_inode_item.h         |  3 ++-
 3 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_trans_inode.c b/fs/xfs/libxfs/xfs_trans_inode.c
index cb4796b6e693..e7a8f63c8975 100644
--- a/fs/xfs/libxfs/xfs_trans_inode.c
+++ b/fs/xfs/libxfs/xfs_trans_inode.c
@@ -33,7 +33,8 @@ xfs_trans_ijoin(
 
 	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
 	if (ip->i_itemp == NULL)
-		xfs_inode_item_init(ip, ip->i_mount);
+		xfs_inode_item_init(ip, ip->i_mount,
+				    tp->t_flags & XFS_TRANS_NOWAIT);
 	iip = ip->i_itemp;
 
 	ASSERT(iip->ili_lock_flags == 0);
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index 91c847a84e10..1742920bb4ce 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -825,21 +825,25 @@ static const struct xfs_item_ops xfs_inode_item_ops = {
 /*
  * Initialize the inode log item for a newly allocated (in-core) inode.
  */
-void
+int
 xfs_inode_item_init(
 	struct xfs_inode	*ip,
-	struct xfs_mount	*mp)
+	struct xfs_mount	*mp,
+	bool			nowait)
 {
 	struct xfs_inode_log_item *iip;
+	gfp_t gfp_flags = GFP_KERNEL | (nowait ? 0 : __GFP_NOFAIL);
 
 	ASSERT(ip->i_itemp == NULL);
-	iip = ip->i_itemp = kmem_cache_zalloc(xfs_ili_cache,
-					      GFP_KERNEL | __GFP_NOFAIL);
+	iip = ip->i_itemp = kmem_cache_zalloc(xfs_ili_cache, gfp_flags);
+	if (!iip)
+		return -EAGAIN;
 
 	iip->ili_inode = ip;
 	spin_lock_init(&iip->ili_lock);
 	xfs_log_item_init(mp, &iip->ili_item, XFS_LI_INODE,
 						&xfs_inode_item_ops);
+	return 0;
 }
 
 /*
diff --git a/fs/xfs/xfs_inode_item.h b/fs/xfs/xfs_inode_item.h
index 377e06007804..7ba6f8a6b243 100644
--- a/fs/xfs/xfs_inode_item.h
+++ b/fs/xfs/xfs_inode_item.h
@@ -42,7 +42,8 @@ static inline int xfs_inode_clean(struct xfs_inode *ip)
 	return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
 }
 
-extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
+extern int xfs_inode_item_init(struct xfs_inode *ip, struct xfs_mount *mp,
+			       bool nowait);
 extern void xfs_inode_item_destroy(struct xfs_inode *);
 extern void xfs_iflush_abort(struct xfs_inode *);
 extern void xfs_iflush_shutdown_abort(struct xfs_inode *);
-- 
2.25.1