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>
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index c97210e..6560dda 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -263,6 +263,7 @@
struct ufs_super_block_first * usb1;
va_list args;
+ lock_kernel();
uspi = UFS_SB(sb)->s_uspi;
usb1 = ubh_get_usb_first(uspi);
@@ -1182,7 +1183,8 @@
struct ufs_super_block_third * usb3;
unsigned new_mount_opt, ufstype;
unsigned flags;
-
+
+ lock_kernel();
lock_super(sb);
uspi = UFS_SB(sb)->s_uspi;
flags = UFS_SB(sb)->s_flags;
@@ -1198,6 +1200,7 @@
ufs_set_opt (new_mount_opt, ONERROR_LOCK);
if (!ufs_parse_options (data, &new_mount_opt)) {
unlock_super(sb);
+ unlock_kernel();
return -EINVAL;
}
if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
@@ -1205,12 +1208,14 @@
} else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
printk("ufstype can't be changed during remount\n");
unlock_super(sb);
+ unlock_kernel();
return -EINVAL;
}
if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
UFS_SB(sb)->s_mount_opt = new_mount_opt;
unlock_super(sb);
+ unlock_kernel();
return 0;
}
@@ -1236,6 +1241,7 @@
printk("ufs was compiled with read-only support, "
"can't be mounted as read-write\n");
unlock_super(sb);
+ unlock_kernel();
return -EINVAL;
#else
if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
@@ -1245,11 +1251,13 @@
ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
printk("this ufstype is read-only supported\n");
unlock_super(sb);
+ unlock_kernel();
return -EINVAL;
}
if (!ufs_read_cylinder_structures(sb)) {
printk("failed during remounting\n");
unlock_super(sb);
+ unlock_kernel();
return -EPERM;
}
sb->s_flags &= ~MS_RDONLY;
@@ -1257,6 +1265,7 @@
}
UFS_SB(sb)->s_mount_opt = new_mount_opt;
unlock_super(sb);
+ unlock_kernel();
return 0;
}