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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2009-07-19 13:51:04 +0300
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2009-07-24 15:14:54 +0300
commite9d6bbc428bdf0c08bbd0b3f28db2b7317cfff21 (patch)
treeec306cfd64f3ae1926b5a92379d072791458b710 /fs/ubifs
parentb5148da40cb77ca84c4b0281e7049bb26d786592 (diff)
downloadop-kernel-dev-e9d6bbc428bdf0c08bbd0b3f28db2b7317cfff21.zip
op-kernel-dev-e9d6bbc428bdf0c08bbd0b3f28db2b7317cfff21.tar.gz
UBIFS: kill BKL
The BKL was pushed down from VFS to the file-systems. It used to serialize mount/unmount/remount and prevented more than one instance of the same file-system from doing mount/umount/remount at the same time. But it is OK for UBIFS and it does not need any additional locking for these cases. Thus, kick the BKL out of UBIFS. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'fs/ubifs')
-rw-r--r--fs/ubifs/super.c13
1 files changed, 1 insertions, 12 deletions
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 26d2e0d..13e7ed4 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -36,7 +36,6 @@
#include <linux/mount.h>
#include <linux/math64.h>
#include <linux/writeback.h>
-#include <linux/smp_lock.h>
#include "ubifs.h"
/*
@@ -1726,8 +1725,6 @@ static void ubifs_put_super(struct super_block *sb)
ubifs_msg("un-mount UBI device %d, volume %d", c->vi.ubi_num,
c->vi.vol_id);
- lock_kernel();
-
/*
* The following asserts are only valid if there has not been a failure
* of the media. For example, there will be dirty inodes if we failed
@@ -1792,8 +1789,6 @@ static void ubifs_put_super(struct super_block *sb)
ubi_close_volume(c->ubi);
mutex_unlock(&c->umount_mutex);
kfree(c);
-
- unlock_kernel();
}
static int ubifs_remount_fs(struct super_block *sb, int *flags, char *data)
@@ -1809,22 +1804,17 @@ static int ubifs_remount_fs(struct super_block *sb, int *flags, char *data)
return err;
}
- lock_kernel();
if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) {
if (c->ro_media) {
ubifs_msg("cannot re-mount due to prior errors");
- unlock_kernel();
return -EROFS;
}
err = ubifs_remount_rw(c);
- if (err) {
- unlock_kernel();
+ if (err)
return err;
- }
} else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY)) {
if (c->ro_media) {
ubifs_msg("cannot re-mount due to prior errors");
- unlock_kernel();
return -EROFS;
}
ubifs_remount_ro(c);
@@ -1839,7 +1829,6 @@ static int ubifs_remount_fs(struct super_block *sb, int *flags, char *data)
}
ubifs_assert(c->lst.taken_empty_lebs > 0);
- unlock_kernel();
return 0;
}
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