f2fs: use cryptoapi crc32 functions
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>
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 7b62016..15bb81f 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -590,6 +590,8 @@
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 @@
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_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 */