[PATCH v8 04/27] xfs: Hold inode locks in xfs_ialloc

[allison.henderson@oracle.com]

From: Allison Henderson <allison.henderson@oracle.com>

Modify xfs_ialloc to hold locks after return.  Caller will be
responsible for manual unlock.  We will need this later to hold locks
across parent pointer operations

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Catherine Hoang <catherine.hoang@oracle.com>
---
 fs/xfs/xfs_inode.c   | 8 +++++++-
 fs/xfs/xfs_qm.c      | 4 +++-
 fs/xfs/xfs_symlink.c | 3 +++
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 27532053a67b..772e3f105b7b 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -774,6 +774,8 @@ xfs_inode_inherit_flags2(
 /*
  * Initialise a newly allocated inode and return the in-core inode to the
  * caller locked exclusively.
+ *
+ * Caller is responsible for unlocking the inode manually upon return
  */
 int
 xfs_init_new_inode(
@@ -899,7 +901,7 @@ xfs_init_new_inode(
 	/*
 	 * Log the new values stuffed into the inode.
 	 */
-	xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+	xfs_trans_ijoin(tp, ip, 0);
 	xfs_trans_log_inode(tp, ip, flags);
 
 	/* now that we have an i_mode we can setup the inode structure */
@@ -1076,6 +1078,7 @@ xfs_create(
 	xfs_qm_dqrele(pdqp);
 
 	*ipp = ip;
+	xfs_iunlock(ip, XFS_ILOCK_EXCL);
 	return 0;
 
  out_trans_cancel:
@@ -1089,6 +1092,7 @@ xfs_create(
 	if (ip) {
 		xfs_finish_inode_setup(ip);
 		xfs_irele(ip);
+		xfs_iunlock(ip, XFS_ILOCK_EXCL);
 	}
  out_release_dquots:
 	xfs_qm_dqrele(udqp);
@@ -1172,6 +1176,7 @@ xfs_create_tmpfile(
 	xfs_qm_dqrele(pdqp);
 
 	*ipp = ip;
+	xfs_iunlock(ip, XFS_ILOCK_EXCL);
 	return 0;
 
  out_trans_cancel:
@@ -1185,6 +1190,7 @@ xfs_create_tmpfile(
 	if (ip) {
 		xfs_finish_inode_setup(ip);
 		xfs_irele(ip);
+		xfs_iunlock(ip, XFS_ILOCK_EXCL);
 	}
  out_release_dquots:
 	xfs_qm_dqrele(udqp);
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index e2c542f6dcd4..fbecf54d3b44 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -826,8 +826,10 @@ xfs_qm_qino_alloc(
 		ASSERT(xfs_is_shutdown(mp));
 		xfs_alert(mp, "%s failed (error %d)!", __func__, error);
 	}
-	if (need_alloc)
+	if (need_alloc) {
 		xfs_finish_inode_setup(*ipp);
+		xfs_iunlock(*ipp, XFS_ILOCK_EXCL);
+	}
 	return error;
 }
 
diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
index 8389f3ef88ef..d8e120913036 100644
--- a/fs/xfs/xfs_symlink.c
+++ b/fs/xfs/xfs_symlink.c
@@ -337,6 +337,7 @@ xfs_symlink(
 	xfs_qm_dqrele(pdqp);
 
 	*ipp = ip;
+	xfs_iunlock(ip, XFS_ILOCK_EXCL);
 	return 0;
 
 out_trans_cancel:
@@ -358,6 +359,8 @@ xfs_symlink(
 
 	if (unlock_dp_on_error)
 		xfs_iunlock(dp, XFS_ILOCK_EXCL);
+	if (ip)
+		xfs_iunlock(ip, XFS_ILOCK_EXCL);
 	return error;
 }
 
-- 
2.25.1