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authorAlessio Igor Bogani <abogani@texware.it>2009-05-12 15:10:54 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2009-06-11 21:36:11 -0400
commit337eb00a2c3a421999c39c94ce7e33545ee8baa7 (patch)
treed9b780d095b638b1d8fa23841ff70347cf5daa08 /fs/jfs/super.c
parent4195f73d1329e49727bcceb028e58cb38376c2b0 (diff)
Push BKL down into ->remount_fs()
[xfs, btrfs, capifs, shmem don't need BKL, exempt] Signed-off-by: Alessio Igor Bogani <abogani@texware.it> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/jfs/super.c')
-rw-r--r--fs/jfs/super.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 3eb13adf386..09b1b6ee218 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -32,6 +32,7 @@
#include <linux/crc32.h>
#include <asm/uaccess.h>
#include <linux/seq_file.h>
+#include <linux/smp_lock.h>
#include "jfs_incore.h"
#include "jfs_filsys.h"
@@ -375,19 +376,24 @@ static int jfs_remount(struct super_block *sb, int *flags, char *data)
s64 newLVSize = 0;
int rc = 0;
int flag = JFS_SBI(sb)->flag;
+ int ret;
if (!parse_options(data, sb, &newLVSize, &flag)) {
return -EINVAL;
}
+ lock_kernel();
if (newLVSize) {
if (sb->s_flags & MS_RDONLY) {
printk(KERN_ERR
"JFS: resize requires volume to be mounted read-write\n");
+ unlock_kernel();
return -EROFS;
}
rc = jfs_extendfs(sb, newLVSize, 0);
- if (rc)
+ if (rc) {
+ unlock_kernel();
return rc;
+ }
}
if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) {
@@ -398,23 +404,31 @@ static int jfs_remount(struct super_block *sb, int *flags, char *data)
truncate_inode_pages(JFS_SBI(sb)->direct_inode->i_mapping, 0);
JFS_SBI(sb)->flag = flag;
- return jfs_mount_rw(sb, 1);
+ ret = jfs_mount_rw(sb, 1);
+ unlock_kernel();
+ return ret;
}
if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY)) {
rc = jfs_umount_rw(sb);
JFS_SBI(sb)->flag = flag;
+ unlock_kernel();
return rc;
}
if ((JFS_SBI(sb)->flag & JFS_NOINTEGRITY) != (flag & JFS_NOINTEGRITY))
if (!(sb->s_flags & MS_RDONLY)) {
rc = jfs_umount_rw(sb);
- if (rc)
+ if (rc) {
+ unlock_kernel();
return rc;
+ }
JFS_SBI(sb)->flag = flag;
- return jfs_mount_rw(sb, 1);
+ ret = jfs_mount_rw(sb, 1);
+ unlock_kernel();
+ return ret;
}
JFS_SBI(sb)->flag = flag;
+ unlock_kernel();
return 0;
}