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 (file)
--- 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,