From: Jeff Liu <jeff.liu@oracle.com>
Date: Tue, 26 Mar 2013 23:24:12 +0000 (+1100)
Subject: ocfs2: delay inode update transactions after verifying the input flags
X-Git-Tag: next-20130404~3^2~475
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3876246f8dcaae3302fb935e884067444839ca0b;p=karo-tx-linux.git

ocfs2: delay inode update transactions after verifying the input flags

There is no need to start the inode update transactions before/while
verifying the input flags.  As a refinement, this patch delay the
transactions utill the pre-check up is ok.

Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Acked-by: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index 752f0b26221d..6cab301a568d 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -101,13 +101,6 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
 	if (!S_ISDIR(inode->i_mode))
 		flags &= ~OCFS2_DIRSYNC_FL;
 
-	handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
-	if (IS_ERR(handle)) {
-		status = PTR_ERR(handle);
-		mlog_errno(status);
-		goto bail_unlock;
-	}
-
 	oldflags = ocfs2_inode->ip_attr;
 	flags = flags & mask;
 	flags |= oldflags & ~mask;
@@ -120,7 +113,14 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
 	if ((oldflags & OCFS2_IMMUTABLE_FL) || ((flags ^ oldflags) &
 		(OCFS2_APPEND_FL | OCFS2_IMMUTABLE_FL))) {
 		if (!capable(CAP_LINUX_IMMUTABLE))
-			goto bail_commit;
+			goto bail_unlock;
+	}
+
+	handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
+	if (IS_ERR(handle)) {
+		status = PTR_ERR(handle);
+		mlog_errno(status);
+		goto bail_unlock;
 	}
 
 	ocfs2_inode->ip_attr = flags;
@@ -130,8 +130,8 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
 	if (status < 0)
 		mlog_errno(status);
 
-bail_commit:
 	ocfs2_commit_trans(osb, handle);
+
 bail_unlock:
 	ocfs2_inode_unlock(inode, 1);
 bail: