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Commit 3dbc4b32 authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

BKL: Remove BKL from squashfs 



The BKL is only used in put_super and fill_super, which are both protected
by the superblocks s_umount rw_semaphore. Therefore it is safe to remove
the BKL entirely.

Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Cc: Phillip Lougher <phillip@lougher.demon.co.uk>
parent 1a028dd2

fs/squashfs/super.c

+0 −11
Original line number Original line Diff line number Diff line
@@ -30,7 +30,6 @@ 
#include <linux/fs.h>

#include <linux/fs.h>

#include <linux/vfs.h>

#include <linux/vfs.h>

#include <linux/slab.h>

#include <linux/slab.h>

#include <linux/smp_lock.h>

#include <linux/mutex.h>

#include <linux/mutex.h>

#include <linux/pagemap.h>

#include <linux/pagemap.h>

#include <linux/init.h>

#include <linux/init.h>
@@ -87,14 +86,11 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent) 
	u64 lookup_table_start, xattr_id_table_start;

	u64 lookup_table_start, xattr_id_table_start;

	int err;

	int err;





	lock_kernel();



	TRACE("Entered squashfs_fill_superblock\n");

	TRACE("Entered squashfs_fill_superblock\n");





	sb->s_fs_info = kzalloc(sizeof(*msblk), GFP_KERNEL);

	sb->s_fs_info = kzalloc(sizeof(*msblk), GFP_KERNEL);

	if (sb->s_fs_info == NULL) {

	if (sb->s_fs_info == NULL) {

		ERROR("Failed to allocate squashfs_sb_info\n");

		ERROR("Failed to allocate squashfs_sb_info\n");

		unlock_kernel();

		return -ENOMEM;

		return -ENOMEM;

	}

	}

	msblk = sb->s_fs_info;

	msblk = sb->s_fs_info;
@@ -304,7 +300,6 @@ allocate_root: 




	TRACE("Leaving squashfs_fill_super\n");

	TRACE("Leaving squashfs_fill_super\n");

	kfree(sblk);

	kfree(sblk);

	unlock_kernel();

	return 0;

	return 0;





failed_mount:

failed_mount:
@@ -319,13 +314,11 @@ failed_mount: 
	kfree(sb->s_fs_info);

	kfree(sb->s_fs_info);

	sb->s_fs_info = NULL;

	sb->s_fs_info = NULL;

	kfree(sblk);

	kfree(sblk);

	unlock_kernel();

	return err;

	return err;





failure:

failure:

	kfree(sb->s_fs_info);

	kfree(sb->s_fs_info);

	sb->s_fs_info = NULL;

	sb->s_fs_info = NULL;

	unlock_kernel();

	return -ENOMEM;

	return -ENOMEM;

}

}
@@ -360,8 +353,6 @@ static int squashfs_remount(struct super_block *sb, int *flags, char *data) 




static void squashfs_put_super(struct super_block *sb)

static void squashfs_put_super(struct super_block *sb)

{

{

	lock_kernel();



	if (sb->s_fs_info) {

	if (sb->s_fs_info) {

		struct squashfs_sb_info *sbi = sb->s_fs_info;

		struct squashfs_sb_info *sbi = sb->s_fs_info;

		squashfs_cache_delete(sbi->block_cache);

		squashfs_cache_delete(sbi->block_cache);
@@ -376,8 +367,6 @@ static void squashfs_put_super(struct super_block *sb) 
		kfree(sb->s_fs_info);

		kfree(sb->s_fs_info);

		sb->s_fs_info = NULL;

		sb->s_fs_info = NULL;

	}

	}



	unlock_kernel();

}

}