diff options
| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-07-10 14:01:03 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2016-07-10 14:01:03 -0400 |
| commit | a7550b30ab709ffb9bbe48669adf7d8556f3698f (patch) | |
| tree | 5ed986d93b2df41cad68bdfa0851604bb039d1d1 /fs/ext4/readpage.c | |
| parent | ff0031d848a0cd7002606f9feef958de8d5edf19 (diff) | |
ext4 crypto: migrate into vfs's crypto engine
This patch removes the most parts of internal crypto codes.
And then, it modifies and adds some ext4-specific crypt codes to use the generic
facility.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/readpage.c')
| -rw-r--r-- | fs/ext4/readpage.c | 45 |
1 files changed, 5 insertions, 40 deletions
diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c index e24ec3bfe1b5..18b2cf23d40f 100644 --- a/fs/ext4/readpage.c +++ b/fs/ext4/readpage.c @@ -46,37 +46,6 @@ #include "ext4.h" -/* - * Call ext4_decrypt on every single page, reusing the encryption - * context. - */ -static void completion_pages(struct work_struct *work) -{ -#ifdef CONFIG_EXT4_FS_ENCRYPTION - struct ext4_crypto_ctx *ctx = - container_of(work, struct ext4_crypto_ctx, r.work); - struct bio *bio = ctx->r.bio; - struct bio_vec *bv; - int i; - - bio_for_each_segment_all(bv, bio, i) { - struct page *page = bv->bv_page; - - int ret = ext4_decrypt(page); - if (ret) { - WARN_ON_ONCE(1); - SetPageError(page); - } else - SetPageUptodate(page); - unlock_page(page); - } - ext4_release_crypto_ctx(ctx); - bio_put(bio); -#else - BUG(); -#endif -} - static inline bool ext4_bio_encrypted(struct bio *bio) { #ifdef CONFIG_EXT4_FS_ENCRYPTION @@ -104,14 +73,10 @@ static void mpage_end_io(struct bio *bio) int i; if (ext4_bio_encrypted(bio)) { - struct ext4_crypto_ctx *ctx = bio->bi_private; - if (bio->bi_error) { - ext4_release_crypto_ctx(ctx); + fscrypt_release_ctx(bio->bi_private); } else { - INIT_WORK(&ctx->r.work, completion_pages); - ctx->r.bio = bio; - queue_work(ext4_read_workqueue, &ctx->r.work); + fscrypt_decrypt_bio_pages(bio->bi_private, bio); return; } } @@ -274,11 +239,11 @@ int ext4_mpage_readpages(struct address_space *mapping, bio = NULL; } if (bio == NULL) { - struct ext4_crypto_ctx *ctx = NULL; + struct fscrypt_ctx *ctx = NULL; if (ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode)) { - ctx = ext4_get_crypto_ctx(inode, GFP_NOFS); + ctx = fscrypt_get_ctx(inode, GFP_NOFS); if (IS_ERR(ctx)) goto set_error_page; } @@ -286,7 +251,7 @@ int ext4_mpage_readpages(struct address_space *mapping, min_t(int, nr_pages, BIO_MAX_PAGES)); if (!bio) { if (ctx) - ext4_release_crypto_ctx(ctx); + fscrypt_release_ctx(ctx); goto set_error_page; } bio->bi_bdev = bdev; |