[PATCH 4/6] f2fs: avoid unnecessary fscrypt_finalize_bounce_page()

[Chao Yu]

fscrypt_finalize_bounce_page() should be called only if we use fs layer
crypto, let's avoid unnecessary fscrypt_finalize_bounce_page() in error
path of f2fs_write_compressed_pages().

BTW, fscrypt_finalize_bounce_page() will check mapping of bounced page
before retrieving original page, so, previously it won't cause any issue
w/ fscrypt_finalize_bounce_page(), but still we'd better avoid coupling
w/ any logic inside fscrypt_finalize_bounce_page().

Signed-off-by: Chao Yu <chao@xxxxxxxxxx>
---
 fs/f2fs/compress.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index caf522d667d6..aaa0813eabcd 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -1455,10 +1455,12 @@ static int f2fs_write_compressed_pages(struct compress_ctx *cc,
 out_destroy_crypt:
 	page_array_free(sbi, cic->rpages, cc->cluster_size);
 
-	for (--i; i >= 0; i--) {
-		if (!cc->cpages[i])
-			continue;
-		fscrypt_finalize_bounce_page(&cc->cpages[i]);
+	if (fio.encrypted) {
+		for (--i; i >= 0; i--) {
+			if (!cc->cpages[i])
+				continue;
+			fscrypt_finalize_bounce_page(&cc->cpages[i]);
+		}
 	}
 out_put_cic:
 	kmem_cache_free(cic_entry_slab, cic);
-- 
2.49.0