From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Wed, 9 Oct 2024 19:40:07 +0000 (+0000)
Subject: f2fs: allow parallel DIO reads
X-Git-Tag: v6.12-rc4~45^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=332fade75d0ecd88cd19556fce0f9cc8322de434;p=thirdparty%2Fkernel%2Flinux.git

f2fs: allow parallel DIO reads

This fixes a regression which prevents parallel DIO reads.

Fixes: 0cac51185e65 ("f2fs: fix to avoid racing in between read and OPU dio write")
Reviewed-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 9ae54c4c72fe9..321d8ffbab6e4 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -4647,7 +4647,8 @@ static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
 					iov_iter_count(to), READ);
 
 	/* In LFS mode, if there is inflight dio, wait for its completion */
-	if (f2fs_lfs_mode(F2FS_I_SB(inode)))
+	if (f2fs_lfs_mode(F2FS_I_SB(inode)) &&
+	    get_pages(F2FS_I_SB(inode), F2FS_DIO_WRITE))
 		inode_dio_wait(inode);
 
 	if (f2fs_should_use_dio(inode, iocb, to)) {