f2fs: allow dio read for LFS mode

We can allow dio reads for LFS mode, while doing buffered writes for dio writes.

Reviewed-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 ca53da5686336517eb70a1c4d66592bfd499d2f3..996b9aef94cebc3f246564299dba8a08bb370012 100644 (file)
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1732,7 +1732,7 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
 
        if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode))
                return 0;
-       if (test_opt(F2FS_I_SB(inode), LFS))
+       if (rw == WRITE && test_opt(F2FS_I_SB(inode), LFS))
                return 0;
 
        trace_f2fs_direct_IO_enter(inode, offset, count, rw);