f2fs crypto: add alloc_bounce_page
This patch adds alloc_bounce_page likewise ext4.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/crypto.c b/fs/f2fs/crypto.c
index 75d62ff..4a62ef1 100644
--- a/fs/f2fs/crypto.c
+++ b/fs/f2fs/crypto.c
@@ -376,6 +376,15 @@
return 0;
}
+static struct page *alloc_bounce_page(struct f2fs_crypto_ctx *ctx)
+{
+ ctx->w.bounce_page = mempool_alloc(f2fs_bounce_page_pool, GFP_NOWAIT);
+ if (ctx->w.bounce_page == NULL)
+ return ERR_PTR(-ENOMEM);
+ ctx->flags |= F2FS_WRITE_PATH_FL;
+ return ctx->w.bounce_page;
+}
+
/**
* f2fs_encrypt() - Encrypts a page
* @inode: The inode for which the encryption should take place
@@ -405,19 +414,17 @@
return (struct page *)ctx;
/* The encryption operation will require a bounce page. */
- ciphertext_page = mempool_alloc(f2fs_bounce_page_pool, GFP_NOWAIT);
- if (!ciphertext_page) {
- err = -ENOMEM;
+ ciphertext_page = alloc_bounce_page(ctx);
+ if (IS_ERR(ciphertext_page))
goto err_out;
- }
- ctx->flags |= F2FS_WRITE_PATH_FL;
- ctx->w.bounce_page = ciphertext_page;
ctx->w.control_page = plaintext_page;
err = f2fs_page_crypto(ctx, inode, F2FS_ENCRYPT, plaintext_page->index,
plaintext_page, ciphertext_page);
- if (err)
+ if (err) {
+ ciphertext_page = ERR_PTR(err);
goto err_out;
+ }
SetPagePrivate(ciphertext_page);
set_page_private(ciphertext_page, (unsigned long)ctx);
@@ -426,7 +433,7 @@
err_out:
f2fs_release_crypto_ctx(ctx);
- return ERR_PTR(err);
+ return ciphertext_page;
}
/**