From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Fri, 11 Nov 2016 20:08:22 +0000 (-0800)
Subject: f2fs: allow dio read for LFS mode
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e57e9ae5b179a6b243c42bf6d9549d1595c27089;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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 ca53da568633..996b9aef94ce 100644
--- 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);