Commit 163e783e authored by David Woodhouse's avatar David Woodhouse Committed by Chris Mason
Browse files

Btrfs: remove crc32c.h and use libcrc32c directly. 



There's no need to preserve this abstraction; it used to let us use
hardware crc32c support directly, but libcrc32c is already doing that for us
through the crypto API -- so we're already using the Intel crc32c
acceleration where appropriate.

Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 6cbff00f

fs/btrfs/crc32c.h

deleted100644 → 0
+0 −29
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2008 Oracle.  All rights reserved.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public

 * License v2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 *

 * You should have received a copy of the GNU General Public

 * License along with this program; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 021110-1307, USA.

 */



#ifndef __BTRFS_CRC32C__

#define __BTRFS_CRC32C__

#include <linux/crc32c.h>



/*

 * this file used to do more for selecting the HW version of crc32c,

 * perhaps it will one day again soon.

 */

#define btrfs_crc32c(seed, data, length) crc32c(seed, data, length)

#endif

fs/btrfs/disk-io.c

+2 −2
Original line number Diff line number Diff line
@@ -26,8 +26,8 @@ 
#include <linux/workqueue.h>

#include <linux/kthread.h>

#include <linux/freezer.h>

#include <linux/crc32c.h>

#include "compat.h"

#include "crc32c.h"

#include "ctree.h"

#include "disk-io.h"

#include "transaction.h"
@@ -171,7 +171,7 @@ out: 


u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len)

{

	return btrfs_crc32c(seed, data, len);

	return crc32c(seed, data, len);

}



void btrfs_csum_final(u32 crc, char *result)

fs/btrfs/extent-tree.c

+3 −4
Original line number Diff line number Diff line
@@ -23,7 +23,6 @@ 
#include <linux/rcupdate.h>

#include "compat.h"

#include "hash.h"

#include "crc32c.h"

#include "ctree.h"

#include "disk-io.h"

#include "print-tree.h"
@@ -625,11 +624,11 @@ static u64 hash_extent_data_ref(u64 root_objectid, u64 owner, u64 offset) 
	__le64 lenum;



	lenum = cpu_to_le64(root_objectid);

	high_crc = btrfs_crc32c(high_crc, &lenum, sizeof(lenum));

	high_crc = crc32c(high_crc, &lenum, sizeof(lenum));

	lenum = cpu_to_le64(owner);

	low_crc = btrfs_crc32c(low_crc, &lenum, sizeof(lenum));

	low_crc = crc32c(low_crc, &lenum, sizeof(lenum));

	lenum = cpu_to_le64(offset);

	low_crc = btrfs_crc32c(low_crc, &lenum, sizeof(lenum));

	low_crc = crc32c(low_crc, &lenum, sizeof(lenum));



	return ((u64)high_crc << 31) ^ (u64)low_crc;

}

fs/btrfs/hash.h

+2 −2
Original line number Diff line number Diff line
@@ -19,9 +19,9 @@ 
#ifndef __HASH__

#define __HASH__



#include "crc32c.h"

#include <linux/crc32c.h>

static inline u64 btrfs_name_hash(const char *name, int len)

{

	return btrfs_crc32c((u32)~1, name, len);

	return crc32c((u32)~1, name, len);

}

#endif

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