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f2fs: use cryptoapi crc32 functions

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The crc function is done bit by bit.
Optimize this by use cryptoapi
crc32 function which is backed by h/w acceleration.

Signed-off-by: Keith Mok <ek9852@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Keith Mok
2016-03-02 12:04:24 -08:00
committed by Jaegeuk Kim
parent 999270de31
commit 43b6573bac
4 changed files with 45 additions and 24 deletions
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13
fs/f2fs/super.c
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@@ -590,6 +590,8 @@ static void f2fs_put_super(struct super_block *sb)
wait_for_completion(&sbi->s_kobj_unregister);
sb->s_fs_info = NULL;
if (sbi->s_chksum_driver)
crypto_free_shash(sbi->s_chksum_driver);
kfree(sbi->raw_super);
kfree(sbi);
}
@@ -1310,6 +1312,15 @@ try_onemore:
if (!sbi)
return -ENOMEM;
/* Load the checksum driver */
sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
if (IS_ERR(sbi->s_chksum_driver)) {
f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver.");
err = PTR_ERR(sbi->s_chksum_driver);
sbi->s_chksum_driver = NULL;
goto free_sbi;
}
/* set a block size */
if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
f2fs_msg(sb, KERN_ERR, "unable to set blocksize");
@@ -1568,6 +1579,8 @@ free_options:
free_sb_buf:
kfree(raw_super);
free_sbi:
if (sbi->s_chksum_driver)
crypto_free_shash(sbi->s_chksum_driver);
kfree(sbi);
/* give only one another chance */