From e9d6bbc428bdf0c08bbd0b3f28db2b7317cfff21 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Sun, 19 Jul 2009 13:51:04 +0300 Subject: [PATCH] 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 --- fs/ubifs/super.c | 13 +------------ 1 file changed, 1 insertion(+), 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 #include #include -#include #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; } -- 2.7.4