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Subject[PATCH] Fix backwards meaning of MS_VERBOSE
On Mon, Mar 13, 2006 at 11:14:07PM -0800, Andrew Morton wrote:
> > VFS: Can't find ext3 filesystem on dev loop0.
>
> That's only printed if the sys_mount() caller set MS_VERBOSE in `flags'.

Well, that and the "ext3: No journal on filesystem on %s" message
which Rob also complained about...

I was just looking at this, and it seemed counterintuitive that
setting the MS_VERBOSE flag actually means "don't be verbose"; but
indeed, this is the way things are, and it's consistently defined as
such, starting with fs/super.c and propgated down into all of the
various filesystem fs/*/super.c which copied that bit of code.

Interestingly, mount doesn't have a way of setting the MS_VERBOSE
flag, but it *does* have the following:

#ifdef MS_SILENT
{ "quiet", 0, 0, MS_SILENT }, /* be quiet */
{ "loud", 0, 1, MS_SILENT }, /* print out messages. */
#endif

.... and fs.h doesn't define MS_SILENT, although it does define the
MS_VERBOSE flag which has the exact opposite meaning.

So.... any objections to the following?

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

Index: 2.6.16-rc5/include/linux/fs.h
===================================================================
--- 2.6.16-rc5.orig/include/linux/fs.h 2006-03-14 07:31:33.000000000 -0500
+++ 2.6.16-rc5/include/linux/fs.h 2006-03-14 07:32:10.000000000 -0500
@@ -102,7 +102,9 @@
#define MS_BIND 4096
#define MS_MOVE 8192
#define MS_REC 16384
-#define MS_VERBOSE 32768
+#define MS_VERBOSE 32768 /* War is peace. Verbosity is silence.
+ MS_VERBOSE is deprecated. */
+#define MS_SILENT 32768
#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */
#define MS_UNBINDABLE (1<<17) /* change to unbindable */
#define MS_PRIVATE (1<<18) /* change to private */
Index: 2.6.16-rc5/fs/super.c
===================================================================
--- 2.6.16-rc5.orig/fs/super.c 2006-03-14 07:31:33.000000000 -0500
+++ 2.6.16-rc5/fs/super.c 2006-03-14 07:54:38.000000000 -0500
@@ -712,7 +712,7 @@
s->s_flags = flags;
strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id));
sb_set_blocksize(s, block_size(bdev));
- error = fill_super(s, data, flags & MS_VERBOSE ? 1 : 0);
+ error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error) {
up_write(&s->s_umount);
deactivate_super(s);
@@ -756,7 +756,7 @@

s->s_flags = flags;

- error = fill_super(s, data, flags & MS_VERBOSE ? 1 : 0);
+ error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error) {
up_write(&s->s_umount);
deactivate_super(s);
@@ -785,7 +785,7 @@
return s;
if (!s->s_root) {
s->s_flags = flags;
- error = fill_super(s, data, flags & MS_VERBOSE ? 1 : 0);
+ error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error) {
up_write(&s->s_umount);
deactivate_super(s);
Index: 2.6.16-rc5/fs/afs/super.c
===================================================================
--- 2.6.16-rc5.orig/fs/afs/super.c 2006-03-14 07:31:33.000000000 -0500
+++ 2.6.16-rc5/fs/afs/super.c 2006-03-14 07:32:10.000000000 -0500
@@ -341,7 +341,7 @@

sb->s_flags = flags;

- ret = afs_fill_super(sb, &params, flags & MS_VERBOSE ? 1 : 0);
+ ret = afs_fill_super(sb, &params, flags & MS_SILENT ? 1 : 0);
if (ret < 0) {
up_write(&sb->s_umount);
deactivate_super(sb);
Index: 2.6.16-rc5/fs/cifs/cifsfs.c
===================================================================
--- 2.6.16-rc5.orig/fs/cifs/cifsfs.c 2006-03-14 07:31:33.000000000 -0500
+++ 2.6.16-rc5/fs/cifs/cifsfs.c 2006-03-14 07:32:10.000000000 -0500
@@ -479,7 +479,7 @@

sb->s_flags = flags;

- rc = cifs_read_super(sb, data, dev_name, flags & MS_VERBOSE ? 1 : 0);
+ rc = cifs_read_super(sb, data, dev_name, flags & MS_SILENT ? 1 : 0);
if (rc) {
up_write(&sb->s_umount);
deactivate_super(sb);
Index: 2.6.16-rc5/fs/jffs2/super.c
===================================================================
--- 2.6.16-rc5.orig/fs/jffs2/super.c 2006-03-14 07:31:33.000000000 -0500
+++ 2.6.16-rc5/fs/jffs2/super.c 2006-03-14 07:54:08.000000000 -0500
@@ -152,7 +152,7 @@
sb->s_op = &jffs2_super_operations;
sb->s_flags = flags | MS_NOATIME;

- ret = jffs2_do_fill_super(sb, data, (flags&MS_VERBOSE)?1:0);
+ ret = jffs2_do_fill_super(sb, data, flags & MS_SILENT ? 1 : 0);

if (ret) {
/* Failure case... */
@@ -257,7 +257,7 @@
}

if (imajor(nd.dentry->d_inode) != MTD_BLOCK_MAJOR) {
- if (!(flags & MS_VERBOSE)) /* Yes I mean this. Strangely */
+ if (!(flags & MS_SILENT))
printk(KERN_NOTICE "Attempt to mount non-MTD device \"%s\" as JFFS2\n",
dev_name);
goto out;
Index: 2.6.16-rc5/fs/nfs/inode.c
===================================================================
--- 2.6.16-rc5.orig/fs/nfs/inode.c 2006-03-14 07:31:33.000000000 -0500
+++ 2.6.16-rc5/fs/nfs/inode.c 2006-03-14 07:53:28.000000000 -0500
@@ -1679,7 +1679,7 @@

s->s_flags = flags;

- error = nfs_fill_super(s, data, flags & MS_VERBOSE ? 1 : 0);
+ error = nfs_fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error) {
up_write(&s->s_umount);
deactivate_super(s);
@@ -1996,7 +1996,7 @@

s->s_flags = flags;

- error = nfs4_fill_super(s, data, flags & MS_VERBOSE ? 1 : 0);
+ error = nfs4_fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error) {
up_write(&s->s_umount);
deactivate_super(s);
Index: 2.6.16-rc5/init/do_mounts.c
===================================================================
--- 2.6.16-rc5.orig/init/do_mounts.c 2006-03-11 22:17:00.000000000 -0500
+++ 2.6.16-rc5/init/do_mounts.c 2006-03-14 07:56:49.000000000 -0500
@@ -19,7 +19,7 @@

int __initdata rd_doload; /* 1 = load RAM disk, 0 = don't load */

-int root_mountflags = MS_RDONLY | MS_VERBOSE;
+int root_mountflags = MS_RDONLY | MS_SILENT;
char * __initdata root_device_name;
static char __initdata saved_root_name[64];

-
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