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| author | Jan Blunck <jblunck@infradead.org> | 2010-02-24 13:25:30 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2010-10-04 21:10:38 +0200 |
| commit | f2143c4e2ebc6be3f07b7c7527dae7313fde23e1 (patch) | |
| tree | 5911d66d2c443d66e20639f0ff9f6c4830384245 /fs | |
| parent | 77b54a46a83232d172d55013c3af838190615260 (diff) | |
| download | kernel_samsung_smdk4412-f2143c4e2ebc6be3f07b7c7527dae7313fde23e1.zip kernel_samsung_smdk4412-f2143c4e2ebc6be3f07b7c7527dae7313fde23e1.tar.gz kernel_samsung_smdk4412-f2143c4e2ebc6be3f07b7c7527dae7313fde23e1.tar.bz2 | |
BKL: Remove BKL from ext4 filesystem
The BKL is still used in ext4_put_super(), ext4_fill_super() and
ext4_remount(). All three calles are protected against concurrent calls by
the s_umount rw semaphore of struct super_block.
Therefore the BKL is protecting nothing in this case.
Signed-off-by: Jan Blunck <jblunck@infradead.org>
Acked-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/super.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 0f0021f..24e7699 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -26,7 +26,6 @@ #include <linux/init.h> #include <linux/blkdev.h> #include <linux/parser.h> -#include <linux/smp_lock.h> #include <linux/buffer_head.h> #include <linux/exportfs.h> #include <linux/vfs.h> @@ -708,7 +707,6 @@ static void ext4_put_super(struct super_block *sb) destroy_workqueue(sbi->dio_unwritten_wq); lock_super(sb); - lock_kernel(); if (sb->s_dirt) ext4_commit_super(sb, 1); @@ -775,7 +773,6 @@ static void ext4_put_super(struct super_block *sb) * Now that we are completely done shutting down the * superblock, we need to actually destroy the kobject. */ - unlock_kernel(); unlock_super(sb); kobject_put(&sbi->s_kobj); wait_for_completion(&sbi->s_kobj_unregister); @@ -2568,8 +2565,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) int err; unsigned int journal_ioprio = DEFAULT_JOURNAL_IOPRIO; - lock_kernel(); - sbi = kzalloc(sizeof(*sbi), GFP_KERNEL); if (!sbi) goto out_free_orig; @@ -2590,8 +2585,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sbi->s_sectors_written_start = part_stat_read(sb->s_bdev->bd_part, sectors[1]); - unlock_kernel(); - /* Cleanup superblock name */ for (cp = sb->s_id; (cp = strchr(cp, '/'));) *cp = '!'; @@ -3214,11 +3207,7 @@ out_fail: sb->s_fs_info = NULL; kfree(sbi->s_blockgroup_lock); kfree(sbi); - kfree(orig_data); - return ret; - out_free_orig: - unlock_kernel(); kfree(orig_data); return ret; } @@ -3726,8 +3715,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) #endif char *orig_data = kstrdup(data, GFP_KERNEL); - lock_kernel(); - /* Store the original options */ lock_super(sb); old_sb_flags = sb->s_flags; @@ -3862,7 +3849,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) kfree(old_opts.s_qf_names[i]); #endif unlock_super(sb); - unlock_kernel(); if (enable_quota) dquot_resume(sb, -1); @@ -3888,7 +3874,6 @@ restore_opts: } #endif unlock_super(sb); - unlock_kernel(); kfree(orig_data); return err; } |