From 0858d7da8a09e440fb192a0239d20249a2d16af8 Mon Sep 17 00:00:00 2001
From: yangerkun <yangerkun@huawei.com>
Date: Mon, 8 Nov 2021 18:34:24 -0800
Subject: [PATCH] ramfs: fix mount source show for ramfs
ramfs_parse_param does not parse key "source", and will convert
-ENOPARAM to 0. This will skip vfs_parse_fs_param_source in vfs_parse_fs_param, which
lead always "none" mount source for ramfs.
Fix it by parsing "source" in ramfs_parse_param like cgroup1_parse_param
does.
Link: https://lkml.kernel.org/r/20210924091756.1906118-1-yangerkun@huawei.com
Signed-off-by: yangerkun <yangerkun@huawei.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
fs/ramfs/inode.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c
index 65e7e56005b8f..df4515d39cd46 100644
--- a/fs/ramfs/inode.c
+++ b/fs/ramfs/inode.c
@@ -203,17 +203,20 @@ static int ramfs_parse_param(struct fs_context *fc, struct fs_parameter *param)
int opt;
opt = fs_parse(fc, ramfs_fs_parameters, param, &result);
- if (opt < 0) {
+ if (opt == -ENOPARAM) {
+ opt = vfs_parse_fs_param_source(fc, param);
+ if (opt != -ENOPARAM)
+ return opt;
/*
* We might like to report bad mount options here;
* but traditionally ramfs has ignored all mount options,
* and as it is used as a !CONFIG_SHMEM simple substitute
* for tmpfs, better continue to ignore other mount options.
*/
- if (opt == -ENOPARAM)
- opt = 0;
- return opt;
+ return 0;
}
+ if (opt < 0)
+ return opt;
switch (opt) {
case Opt_mode:
--
GitLab