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dm: prefer kmap_local_page() instead of deprecated kmap_atomic()

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Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
This commit is contained in:
Heinz Mauelshagen 2023-02-07 20:22:58 +01:00 committed by Mike Snitzer
parent 3bd9400307
commit 0d78954a2d
2 changed files with 18 additions and 18 deletions
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24
drivers/md/dm-crypt.c
View File

@ -532,9 +532,9 @@ static int crypt_iv_lmk_gen(struct crypt_config *cc, u8 *iv,
if (bio_data_dir(dmreq->ctx->bio_in) == WRITE) {
sg = crypt_get_sg_data(cc, dmreq->sg_in);
src = kmap_atomic(sg_page(sg));
src = kmap_local_page(sg_page(sg));
r = crypt_iv_lmk_one(cc, iv, dmreq, src + sg->offset);
kunmap_atomic(src);
kunmap_local(src);
} else
memset(iv, 0, cc->iv_size);
@ -552,14 +552,14 @@ static int crypt_iv_lmk_post(struct crypt_config *cc, u8 *iv,
return 0;
sg = crypt_get_sg_data(cc, dmreq->sg_out);
dst = kmap_atomic(sg_page(sg));
dst = kmap_local_page(sg_page(sg));
r = crypt_iv_lmk_one(cc, iv, dmreq, dst + sg->offset);
/* Tweak the first block of plaintext sector */
if (!r)
crypto_xor(dst + sg->offset, iv, cc->iv_size);
kunmap_atomic(dst);
kunmap_local(dst);
return r;
}
@ -682,9 +682,9 @@ static int crypt_iv_tcw_gen(struct crypt_config *cc, u8 *iv,
/* Remove whitening from ciphertext */
if (bio_data_dir(dmreq->ctx->bio_in) != WRITE) {
sg = crypt_get_sg_data(cc, dmreq->sg_in);
src = kmap_atomic(sg_page(sg));
src = kmap_local_page(sg_page(sg));
r = crypt_iv_tcw_whitening(cc, dmreq, src + sg->offset);
kunmap_atomic(src);
kunmap_local(src);
}
/* Calculate IV */
@ -708,9 +708,9 @@ static int crypt_iv_tcw_post(struct crypt_config *cc, u8 *iv,
/* Apply whitening on ciphertext */
sg = crypt_get_sg_data(cc, dmreq->sg_out);
dst = kmap_atomic(sg_page(sg));
dst = kmap_local_page(sg_page(sg));
r = crypt_iv_tcw_whitening(cc, dmreq, dst + sg->offset);
kunmap_atomic(dst);
kunmap_local(dst);
return r;
}
@ -975,15 +975,15 @@ static int crypt_iv_elephant(struct crypt_config *cc, struct dm_crypt_request *d
goto out;
sg = crypt_get_sg_data(cc, dmreq->sg_out);
data = kmap_atomic(sg_page(sg));
data = kmap_local_page(sg_page(sg));
data_offset = data + sg->offset;
/* Cannot modify original bio, copy to sg_out and apply Elephant to it */
if (bio_data_dir(dmreq->ctx->bio_in) == WRITE) {
sg2 = crypt_get_sg_data(cc, dmreq->sg_in);
data2 = kmap_atomic(sg_page(sg2));
data2 = kmap_local_page(sg_page(sg2));
memcpy(data_offset, data2 + sg2->offset, cc->sector_size);
kunmap_atomic(data2);
kunmap_local(data2);
}
if (bio_data_dir(dmreq->ctx->bio_in) != WRITE) {
@ -1003,7 +1003,7 @@ static int crypt_iv_elephant(struct crypt_config *cc, struct dm_crypt_request *d
diffuser_cpu_to_disk((__le32*)data_offset, cc->sector_size / sizeof(u32));
}
kunmap_atomic(data);
kunmap_local(data);
out:
kfree_sensitive(ks);
kfree_sensitive(es);

12
drivers/md/dm-log-writes.c
View File

@ -232,13 +232,13 @@ static int write_metadata(struct log_writes_c *lc, void *entry,
goto error;
}
ptr = kmap_atomic(page);
ptr = kmap_local_page(page);
memcpy(ptr, entry, entrylen);
if (datalen)
memcpy(ptr + entrylen, data, datalen);
memset(ptr + entrylen + datalen, 0,
lc->sectorsize - entrylen - datalen);
kunmap_atomic(ptr);
kunmap_local(ptr);
ret = bio_add_page(bio, page, lc->sectorsize, 0);
if (ret != lc->sectorsize) {
@ -287,11 +287,11 @@ static int write_inline_data(struct log_writes_c *lc, void *entry,
goto error_bio;
}
ptr = kmap_atomic(page);
ptr = kmap_local_page(page);
memcpy(ptr, data, pg_datalen);
if (pg_sectorlen > pg_datalen)
memset(ptr + pg_datalen, 0, pg_sectorlen - pg_datalen);
kunmap_atomic(ptr);
kunmap_local(ptr);
ret = bio_add_page(bio, page, pg_sectorlen, 0);
if (ret != pg_sectorlen) {
@ -743,9 +743,9 @@ static int log_writes_map(struct dm_target *ti, struct bio *bio)
return DM_MAPIO_KILL;
}
dst = kmap_atomic(page);
dst = kmap_local_page(page);
memcpy_from_bvec(dst, &bv);
kunmap_atomic(dst);
kunmap_local(dst);
block->vecs[i].bv_page = page;
block->vecs[i].bv_len = bv.bv_len;
block->vec_cnt++;