From d6d4c19c5f9ac5972e30e89b3c81ad1fd6e11fee Mon Sep 17 00:00:00 2001 From: Jan Blunck Date: Wed, 24 Feb 2010 13:25:32 +0100 Subject: [PATCH] BKL: Remove BKL from NILFS2 The BKL is only used in put_super, fill_super and remount_fs that are all three protected by the superblocks s_umount rw_semaphore. Therefore it is safe to remove the BKL entirely. Signed-off-by: Jan Blunck Signed-off-by: Arnd Bergmann --- fs/nilfs2/ioctl.c | 1 - fs/nilfs2/super.c | 18 +----------------- 2 files changed, 1 insertion(+), 18 deletions(-) diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c index f90a33d..0442ee3 100644 --- a/fs/nilfs2/ioctl.c +++ b/fs/nilfs2/ioctl.c @@ -22,7 +22,6 @@ #include #include -#include /* lock_kernel(), unlock_kernel() */ #include #include /* capable() */ #include /* copy_from_user(), copy_to_user() */ diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 0d573c2..9f4913f 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -45,7 +45,6 @@ #include #include #include -#include #include #include #include @@ -342,8 +341,6 @@ static void nilfs_put_super(struct super_block *sb) struct nilfs_sb_info *sbi = NILFS_SB(sb); struct the_nilfs *nilfs = sbi->s_nilfs; - lock_kernel(); - nilfs_detach_segment_constructor(sbi); if (!(sb->s_flags & MS_RDONLY)) { @@ -361,8 +358,6 @@ static void nilfs_put_super(struct super_block *sb) sbi->s_super = NULL; sb->s_fs_info = NULL; nilfs_put_sbinfo(sbi); - - unlock_kernel(); } static int nilfs_sync_fs(struct super_block *sb, int wait) @@ -949,8 +944,6 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) struct nilfs_mount_options old_opts; int was_snapshot, err; - lock_kernel(); - down_write(&nilfs->ns_super_sem); old_sb_flags = sb->s_flags; old_opts.mount_opt = sbi->s_mount_opt; @@ -1024,7 +1017,6 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) } out: up_write(&nilfs->ns_super_sem); - unlock_kernel(); return 0; restore_opts: @@ -1032,7 +1024,6 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) sbi->s_mount_opt = old_opts.mount_opt; sbi->s_snapshot_cno = old_opts.snapshot_cno; up_write(&nilfs->ns_super_sem); - unlock_kernel(); return err; } @@ -1113,12 +1104,9 @@ nilfs_get_sb(struct file_system_type *fs_type, int flags, if (!(flags & MS_RDONLY)) mode |= FMODE_WRITE; - lock_kernel(); sd.bdev = open_bdev_exclusive(dev_name, mode, fs_type); - if (IS_ERR(sd.bdev)) { - unlock_kernel(); + if (IS_ERR(sd.bdev)) return PTR_ERR(sd.bdev); - } /* * To get mount instance using sget() vfs-routine, NILFS needs @@ -1201,7 +1189,6 @@ nilfs_get_sb(struct file_system_type *fs_type, int flags, if (need_to_close) close_bdev_exclusive(sd.bdev, mode); simple_set_mnt(mnt, s); - unlock_kernel(); return 0; failed_unlock: @@ -1209,8 +1196,6 @@ nilfs_get_sb(struct file_system_type *fs_type, int flags, put_nilfs(nilfs); failed: close_bdev_exclusive(sd.bdev, mode); - - unlock_kernel(); return err; cancel_new: @@ -1223,7 +1208,6 @@ nilfs_get_sb(struct file_system_type *fs_type, int flags, * We must finish all post-cleaning before this call; * put_nilfs() needs the block device. */ - unlock_kernel(); return err; } -- 2.7.4