diff options
Diffstat (limited to 'fs/ext4/crypto.c')
| -rw-r--r-- | fs/ext4/crypto.c | 31 |
1 files changed, 10 insertions, 21 deletions
diff --git a/fs/ext4/crypto.c b/fs/ext4/crypto.c index 9969d054cd88..28a0e4bd91b0 100644 --- a/fs/ext4/crypto.c +++ b/fs/ext4/crypto.c @@ -71,14 +71,14 @@ void ext4_release_crypto_ctx(struct ext4_crypto_ctx *ctx) { unsigned long flags; - if (ctx->bounce_page) { + if (ctx->flags & EXT4_WRITE_PATH_FL && ctx->w.bounce_page) { if (ctx->flags & EXT4_BOUNCE_PAGE_REQUIRES_FREE_ENCRYPT_FL) - __free_page(ctx->bounce_page); + __free_page(ctx->w.bounce_page); else - mempool_free(ctx->bounce_page, ext4_bounce_page_pool); - ctx->bounce_page = NULL; + mempool_free(ctx->w.bounce_page, ext4_bounce_page_pool); } - ctx->control_page = NULL; + ctx->w.bounce_page = NULL; + ctx->w.control_page = NULL; if (ctx->flags & EXT4_CTX_REQUIRES_FREE_ENCRYPT_FL) { if (ctx->tfm) crypto_free_tfm(ctx->tfm); @@ -134,6 +134,7 @@ struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode) } else { ctx->flags &= ~EXT4_CTX_REQUIRES_FREE_ENCRYPT_FL; } + ctx->flags &= ~EXT4_WRITE_PATH_FL; /* Allocate a new Crypto API context if we don't already have * one or if it isn't the right mode. */ @@ -165,10 +166,6 @@ struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode) } BUG_ON(ci->ci_size != ext4_encryption_key_size(ci->ci_data_mode)); - /* There shouldn't be a bounce page attached to the crypto - * context at this point. */ - BUG_ON(ctx->bounce_page); - out: if (res) { if (!IS_ERR_OR_NULL(ctx)) @@ -189,15 +186,6 @@ void ext4_exit_crypto(void) struct ext4_crypto_ctx *pos, *n; list_for_each_entry_safe(pos, n, &ext4_free_crypto_ctxs, free_list) { - if (pos->bounce_page) { - if (pos->flags & - EXT4_BOUNCE_PAGE_REQUIRES_FREE_ENCRYPT_FL) { - __free_page(pos->bounce_page); - } else { - mempool_free(pos->bounce_page, - ext4_bounce_page_pool); - } - } if (pos->tfm) crypto_free_tfm(pos->tfm); kmem_cache_free(ext4_crypto_ctx_cachep, pos); @@ -425,8 +413,9 @@ struct page *ext4_encrypt(struct inode *inode, } else { ctx->flags |= EXT4_BOUNCE_PAGE_REQUIRES_FREE_ENCRYPT_FL; } - ctx->bounce_page = ciphertext_page; - ctx->control_page = plaintext_page; + ctx->flags |= EXT4_WRITE_PATH_FL; + ctx->w.bounce_page = ciphertext_page; + ctx->w.control_page = plaintext_page; err = ext4_page_crypto(ctx, inode, EXT4_ENCRYPT, plaintext_page->index, plaintext_page, ciphertext_page); if (err) { @@ -505,7 +494,7 @@ int ext4_encrypted_zeroout(struct inode *inode, struct ext4_extent *ex) } else { ctx->flags |= EXT4_BOUNCE_PAGE_REQUIRES_FREE_ENCRYPT_FL; } - ctx->bounce_page = ciphertext_page; + ctx->w.bounce_page = ciphertext_page; while (len--) { err = ext4_page_crypto(ctx, inode, EXT4_ENCRYPT, lblk, |