From: Steven Whitehouse <swhiteho@redhat.com>
Subject: [RHEL 5.1] [GFS2] Fix bug relating to inherit_jdata flag on inodes 	(bz #248576)
Date: Thu, 19 Jul 2007 15:54:25 +0100
Bugzilla: 248576
Message-Id: <1184856865.8765.394.camel@quoit>
Changelog: [GFS2] Fix bug relating to inherit_jdata flag on inodes


Hi,

The inherit jdata flag was not working correctly on directory inodes as
it had got confused with the journaled data bit (always set on
directories internally to gfs2, but never actually reported to user
space since we use that bit for inherit jdata for directories).

This patch is upstream in the GFS2 -nmw git. I've tested it to ensure
that it does result in the correct setting of the jdata bit. This fixes
bz #248576,

Steve.

-----------------------------------------------------------------
diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index 196d832..a82b032 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -177,8 +177,8 @@ static const u32 fsflags_to_gfs2[32] = {
 	[5] = GFS2_DIF_APPENDONLY,
 	[7] = GFS2_DIF_NOATIME,
 	[12] = GFS2_DIF_EXHASH,
-	[14] = GFS2_DIF_JDATA,
-	[20] = GFS2_DIF_DIRECTIO,
+	[14] = GFS2_DIF_INHERIT_JDATA,
+	[20] = GFS2_DIF_INHERIT_DIRECTIO,
 };
 
 static const u32 gfs2_to_fsflags[32] = {
@@ -187,8 +187,6 @@ static const u32 gfs2_to_fsflags[32] = {
 	[gfs2fl_AppendOnly] = FS_APPEND_FL,
 	[gfs2fl_NoAtime] = FS_NOATIME_FL,
 	[gfs2fl_ExHash] = FS_INDEX_FL,
-	[gfs2fl_Jdata] = FS_JOURNAL_DATA_FL,
-	[gfs2fl_Directio] = FS_DIRECTIO_FL,
 	[gfs2fl_InheritDirectio] = FS_DIRECTIO_FL,
 	[gfs2fl_InheritJdata] = FS_JOURNAL_DATA_FL,
 };
@@ -207,6 +205,12 @@ static int gfs2_get_flags(struct file *filp, u32 __user *ptr)
 		return error;
 
 	fsflags = fsflags_cvt(gfs2_to_fsflags, ip->i_di.di_flags);
+	if (!S_ISDIR(inode->i_mode)) {
+		if (ip->i_di.di_flags & GFS2_DIF_JDATA)
+			fsflags |= FS_JOURNAL_DATA_FL;
+		if (ip->i_di.di_flags & GFS2_DIF_DIRECTIO)
+			fsflags |= FS_DIRECTIO_FL;
+	}
 	if (put_user(fsflags, ptr))
 		error = -EFAULT;
 
@@ -270,13 +274,6 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask)
 	if ((new_flags ^ flags) == 0)
 		goto out;
 
-	if (S_ISDIR(inode->i_mode)) {
-		if ((new_flags ^ flags) & GFS2_DIF_JDATA)
-			new_flags ^= (GFS2_DIF_JDATA|GFS2_DIF_INHERIT_JDATA);
-		if ((new_flags ^ flags) & GFS2_DIF_DIRECTIO)
-			new_flags ^= (GFS2_DIF_DIRECTIO|GFS2_DIF_INHERIT_DIRECTIO);
-	}
-
 	error = -EINVAL;
 	if ((new_flags ^ flags) & ~GFS2_FLAGS_USER_SET)
 		goto out;
@@ -315,11 +312,19 @@ out:
 
 static int gfs2_set_flags(struct file *filp, u32 __user *ptr)
 {
+	struct inode *inode = filp->f_dentry->d_inode;
 	u32 fsflags, gfsflags;
 	if (get_user(fsflags, ptr))
 		return -EFAULT;
 	gfsflags = fsflags_cvt(fsflags_to_gfs2, fsflags);
-	return do_gfs2_set_flags(filp, gfsflags, ~0);
+	if (!S_ISDIR(inode->i_mode)) {
+		if (gfsflags & GFS2_DIF_INHERIT_JDATA)
+			gfsflags ^= (GFS2_DIF_JDATA | GFS2_DIF_INHERIT_JDATA);
+		if (gfsflags & GFS2_DIF_INHERIT_DIRECTIO)
+			gfsflags ^= (GFS2_DIF_DIRECTIO | GFS2_DIF_INHERIT_DIRECTIO);
+		return do_gfs2_set_flags(filp, gfsflags, ~0);
+	}
+	return do_gfs2_set_flags(filp, gfsflags, ~GFS2_DIF_JDATA);
 }
 
 static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)