From: Chao Yu <yuchao0@huawei.com>
Date: Mon, 27 Feb 2017 09:10:45 +0000 (+0800)
Subject: f2fs: fix to update F2FS_{CP_}WB_DATA count correctly
X-Git-Tag: v5.15~11759^2~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=540faedb0036aca14ff90a7f679b008442bc9dd7;p=platform%2Fkernel%2Flinux-starfive.git

f2fs: fix to update F2FS_{CP_}WB_DATA count correctly

We should only account F2FS_{CP_}WB_DATA IOs for write path, fix it.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index b0a2e3f..1375fef 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -398,7 +398,8 @@ alloc_new:
 		if ((fio->type == DATA || fio->type == NODE) &&
 				fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) {
 			err = -EAGAIN;
-			dec_page_count(sbi, WB_DATA_TYPE(bio_page));
+			if (!is_read)
+				dec_page_count(sbi, WB_DATA_TYPE(bio_page));
 			goto out_fail;
 		}
 		io->bio = __bio_alloc(sbi, fio->new_blkaddr,