f2fs: support read iostat
Adds to support accounting read IOs from userspace/kernel.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 26248c8..28a8c79 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -737,6 +737,9 @@ static int ra_data_block(struct inode *inode, pgoff_t index)
goto put_encrypted_page;
f2fs_put_page(fio.encrypted_page, 0);
f2fs_put_page(page, 1);
+
+ f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
+
return 0;
put_encrypted_page:
f2fs_put_page(fio.encrypted_page, 1);
@@ -840,6 +843,9 @@ static int move_data_block(struct inode *inode, block_t bidx,
f2fs_put_page(mpage, 1);
goto up_out;
}
+
+ f2fs_update_iostat(fio.sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
+
lock_page(mpage);
if (unlikely(mpage->mapping != META_MAPPING(fio.sbi) ||
!PageUptodate(mpage))) {