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| author | Keith Mok <ek9852@gmail.com> | 2016-03-02 21:04:24 +0100 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-03-18 05:19:43 +0100 |
| commit | 43b6573bac95d7cc8a7fb51efe8468c994f5cf56 (patch) | |
| tree | 646cd760526d55dcfe0dc471f069021332a2b862 /fs/f2fs/super.c | |
| parent | f2fs: modify the readahead method in ra_node_page() (diff) | |
| download | linux-43b6573bac95d7cc8a7fb51efe8468c994f5cf56.tar.xz linux-43b6573bac95d7cc8a7fb51efe8468c994f5cf56.zip | |
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>
Diffstat (limited to 'fs/f2fs/super.c')
| -rw-r--r-- | fs/f2fs/super.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 7b62016e66cd..15bb81f8dac2 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -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 */ |