From: Eric Biggers <[email protected]>

Just use sha256() instead of the clunky crypto API.  This is much
simpler.

Signed-off-by: Eric Biggers <[email protected]>
---
 fs/bcachefs/Kconfig    |  2 +-
 fs/bcachefs/bcachefs.h |  1 -
 fs/bcachefs/checksum.c | 10 ----------
 fs/bcachefs/str_hash.h |  8 ++------
 fs/bcachefs/super.c    |  1 -
 5 files changed, 3 insertions(+), 19 deletions(-)

diff --git a/fs/bcachefs/Kconfig b/fs/bcachefs/Kconfig
index fc7efd0a7525e..c9798750202d3 100644
--- a/fs/bcachefs/Kconfig
+++ b/fs/bcachefs/Kconfig
@@ -14,11 +14,11 @@ config BCACHEFS_FS
        select ZLIB_DEFLATE
        select ZLIB_INFLATE
        select ZSTD_COMPRESS
        select ZSTD_DECOMPRESS
        select CRYPTO
-       select CRYPTO_SHA256
+       select CRYPTO_LIB_SHA256
        select CRYPTO_CHACHA20
        select CRYPTO_POLY1305
        select KEYS
        select RAID6_PQ
        select XOR_BLOCKS
diff --git a/fs/bcachefs/bcachefs.h b/fs/bcachefs/bcachefs.h
index b432bb6e6f6e0..0ea593e813f43 100644
--- a/fs/bcachefs/bcachefs.h
+++ b/fs/bcachefs/bcachefs.h
@@ -977,11 +977,10 @@ struct bch_fs {
 
        mempool_t               compression_bounce[2];
        mempool_t               compress_workspace[BCH_COMPRESSION_OPT_NR];
        size_t                  zstd_workspace_size;
 
-       struct crypto_shash     *sha256;
        struct crypto_sync_skcipher *chacha20;
        struct crypto_shash     *poly1305;
 
        atomic64_t              key_version;
 
diff --git a/fs/bcachefs/checksum.c b/fs/bcachefs/checksum.c
index 23a383577d4c7..208e13e308084 100644
--- a/fs/bcachefs/checksum.c
+++ b/fs/bcachefs/checksum.c
@@ -786,28 +786,18 @@ void bch2_fs_encryption_exit(struct bch_fs *c)
 {
        if (c->poly1305)
                crypto_free_shash(c->poly1305);
        if (c->chacha20)
                crypto_free_sync_skcipher(c->chacha20);
-       if (c->sha256)
-               crypto_free_shash(c->sha256);
 }
 
 int bch2_fs_encryption_init(struct bch_fs *c)
 {
        struct bch_sb_field_crypt *crypt;
        struct bch_key key;
        int ret = 0;
 
-       c->sha256 = crypto_alloc_shash("sha256", 0, 0);
-       ret = PTR_ERR_OR_ZERO(c->sha256);
-       if (ret) {
-               c->sha256 = NULL;
-               bch_err(c, "error requesting sha256 module: %s", 
bch2_err_str(ret));
-               goto out;
-       }
-
        crypt = bch2_sb_field_get(c->disk_sb.sb, crypt);
        if (!crypt)
                goto out;
 
        ret = bch2_alloc_ciphers(c);
diff --git a/fs/bcachefs/str_hash.h b/fs/bcachefs/str_hash.h
index f645a4547b049..575ad1e039040 100644
--- a/fs/bcachefs/str_hash.h
+++ b/fs/bcachefs/str_hash.h
@@ -10,11 +10,10 @@
 #include "siphash.h"
 #include "subvolume.h"
 #include "super.h"
 
 #include <linux/crc32c.h>
-#include <crypto/hash.h>
 #include <crypto/sha2.h>
 
 static inline enum bch_str_hash_type
 bch2_str_hash_opt_to_type(struct bch_fs *c, enum bch_str_hash_opts opt)
 {
@@ -53,17 +52,14 @@ bch2_hash_info_init(struct bch_fs *c, const struct 
bch_inode_unpacked *bi)
 #endif
                .siphash_key = { .k0 = bi->bi_hash_seed }
        };
 
        if (unlikely(info.type == BCH_STR_HASH_siphash_old)) {
-               SHASH_DESC_ON_STACK(desc, c->sha256);
                u8 digest[SHA256_DIGEST_SIZE];
 
-               desc->tfm = c->sha256;
-
-               crypto_shash_digest(desc, (void *) &bi->bi_hash_seed,
-                                   sizeof(bi->bi_hash_seed), digest);
+               sha256((const u8 *)&bi->bi_hash_seed,
+                      sizeof(bi->bi_hash_seed), digest);
                memcpy(&info.siphash_key, digest, sizeof(info.siphash_key));
        }
 
        return info;
 }
diff --git a/fs/bcachefs/super.c b/fs/bcachefs/super.c
index 6de3a5751561e..8e928b3d8ef4a 100644
--- a/fs/bcachefs/super.c
+++ b/fs/bcachefs/super.c
@@ -73,11 +73,10 @@
 #include <crypto/hash.h>
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Kent Overstreet <[email protected]>");
 MODULE_DESCRIPTION("bcachefs filesystem");
-MODULE_SOFTDEP("pre: sha256");
 MODULE_SOFTDEP("pre: chacha20");
 MODULE_SOFTDEP("pre: poly1305");
 MODULE_SOFTDEP("pre: xxhash");
 
 const char * const bch2_fs_flag_strs[] = {

base-commit: da920b7df701770e006928053672147075587fb2
prerequisite-patch-id: 500a8dddbef9cb497eecaf59c0cb8fc7f2e4380e
-- 
2.49.0


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