Rename superblock flags (MS_xyz -> SB_xyz)

This is a pure automated search-and-replace of the internal kernel
superblock flags.

The s_flags are now called SB_*, with the names and the values for the
moment mirroring the MS_* flags that they're equivalent to.

Note how the MS_xyz flags are the ones passed to the mount system call,
while the SB_xyz flags are what we then use in sb->s_flags.

The script to do this was:

    # places to look in; re security/*: it generally should *not* be
    # touched (that stuff parses mount(2) arguments directly), but
    # there are two places where we really deal with superblock flags.
    FILES="drivers/mtd drivers/staging/lustre fs ipc mm \
            include/linux/fs.h include/uapi/linux/bfs_fs.h \
            security/apparmor/apparmorfs.c security/apparmor/include/lib.h"
    # the list of MS_... constants
    SYMS="RDONLY NOSUID NODEV NOEXEC SYNCHRONOUS REMOUNT MANDLOCK \
          DIRSYNC NOATIME NODIRATIME BIND MOVE REC VERBOSE SILENT \
          POSIXACL UNBINDABLE PRIVATE SLAVE SHARED RELATIME KERNMOUNT \
          I_VERSION STRICTATIME LAZYTIME SUBMOUNT NOREMOTELOCK NOSEC BORN \
          ACTIVE NOUSER"

    SED_PROG=
    for i in $SYMS; do SED_PROG="$SED_PROG -e s/MS_$i/SB_$i/g"; done

    # we want files that contain at least one of MS_...,
    # with fs/namespace.c and fs/pnode.c excluded.
    L=$(for i in $SYMS; do git grep -w -l MS_$i $FILES; done| sort|uniq|grep -v '^fs/namespace.c'|grep -v '^fs/pnode.c')

    for f in $L; do sed -i $f $SED_PROG; done

Requested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/nfs/dir.c

@@ -1256,7 +1256,7 @@ static int nfs_dentry_delete(const struct dentry *dentry)
 		/* Unhash it, so that ->d_iput() would be called */
 		return 1;
 	}
-	if (!(dentry->d_sb->s_flags & MS_ACTIVE)) {
+	if (!(dentry->d_sb->s_flags & SB_ACTIVE)) {
 		/* Unhash it, so that ancestors of killed async unlink
 		 * files will be cleaned up during umount */
 		return 1;

fs/nfs/inode.c

@@ -752,7 +752,7 @@ int nfs_getattr(const struct path *path, struct kstat *stat,
 	 * Note that we only have to check the vfsmount flags here:
 	 *  - NFS always sets S_NOATIME by so checking it would give a
 	 *    bogus result
-	 *  - NFS never sets MS_NOATIME or MS_NODIRATIME so there is
+	 *  - NFS never sets SB_NOATIME or SB_NODIRATIME so there is
 	 *    no point in checking those.
 	 */
 	if ((path->mnt->mnt_flags & MNT_NOATIME) ||

fs/nfs/internal.h

@@ -10,7 +10,7 @@
 #include <linux/nfs_page.h>
 #include <linux/wait_bit.h>
 
-#define NFS_MS_MASK (MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS)
+#define NFS_MS_MASK (SB_RDONLY|SB_NOSUID|SB_NODEV|SB_NOEXEC|SB_SYNCHRONOUS)
 
 extern const struct export_operations nfs_export_ops;
 

fs/nfs/super.c

@@ -813,9 +813,9 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root)
 	 */
 	seq_printf(m, "\n\topts:\t");
 	seq_puts(m, sb_rdonly(root->d_sb) ? "ro" : "rw");
-	seq_puts(m, root->d_sb->s_flags & MS_SYNCHRONOUS ? ",sync" : "");
-	seq_puts(m, root->d_sb->s_flags & MS_NOATIME ? ",noatime" : "");
-	seq_puts(m, root->d_sb->s_flags & MS_NODIRATIME ? ",nodiratime" : "");
+	seq_puts(m, root->d_sb->s_flags & SB_SYNCHRONOUS ? ",sync" : "");
+	seq_puts(m, root->d_sb->s_flags & SB_NOATIME ? ",noatime" : "");
+	seq_puts(m, root->d_sb->s_flags & SB_NODIRATIME ? ",nodiratime" : "");
 	nfs_show_mount_options(m, nfss, 1);
 
 	seq_printf(m, "\n\tage:\t%lu", (jiffies - nfss->mount_time) / HZ);
@@ -2296,11 +2296,11 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
 	/*
 	 * noac is a special case. It implies -o sync, but that's not
 	 * necessarily reflected in the mtab options. do_remount_sb
-	 * will clear MS_SYNCHRONOUS if -o sync wasn't specified in the
+	 * will clear SB_SYNCHRONOUS if -o sync wasn't specified in the
 	 * remount options, so we have to explicitly reset it.
 	 */
 	if (data->flags & NFS_MOUNT_NOAC)
-		*flags |= MS_SYNCHRONOUS;
+		*flags |= SB_SYNCHRONOUS;
 
 	/* compare new mount options with old ones */
 	error = nfs_compare_remount_data(nfss, data);
@@ -2349,7 +2349,7 @@ void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
 		/* The VFS shouldn't apply the umask to mode bits. We will do
 		 * so ourselves when necessary.
 		 */
-		sb->s_flags |= MS_POSIXACL;
+		sb->s_flags |= SB_POSIXACL;
 		sb->s_time_gran = 1;
 		sb->s_export_op = &nfs_export_ops;
 	}
@@ -2379,7 +2379,7 @@ static void nfs_clone_super(struct super_block *sb,
 		/* The VFS shouldn't apply the umask to mode bits. We will do
 		 * so ourselves when necessary.
 		 */
-		sb->s_flags |= MS_POSIXACL;
+		sb->s_flags |= SB_POSIXACL;
 	}
 
  	nfs_initialise_sb(sb);
@@ -2600,11 +2600,11 @@ struct dentry *nfs_fs_mount_common(struct nfs_server *server,
 
 	/* -o noac implies -o sync */
 	if (server->flags & NFS_MOUNT_NOAC)
-		sb_mntdata.mntflags |= MS_SYNCHRONOUS;
+		sb_mntdata.mntflags |= SB_SYNCHRONOUS;
 
 	if (mount_info->cloned != NULL && mount_info->cloned->sb != NULL)
-		if (mount_info->cloned->sb->s_flags & MS_SYNCHRONOUS)
-			sb_mntdata.mntflags |= MS_SYNCHRONOUS;
+		if (mount_info->cloned->sb->s_flags & SB_SYNCHRONOUS)
+			sb_mntdata.mntflags |= SB_SYNCHRONOUS;
 
 	/* Get a superblock - note that we may end up sharing one that already exists */
 	s = sget(nfs_mod->nfs_fs, compare_super, nfs_set_super, flags, &sb_mntdata);
@@ -2641,7 +2641,7 @@ struct dentry *nfs_fs_mount_common(struct nfs_server *server,
 	if (error)
 		goto error_splat_root;
 
-	s->s_flags |= MS_ACTIVE;
+	s->s_flags |= SB_ACTIVE;
 
 out:
 	return mntroot;