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Subject[PATCH 08/13] sysfs: don't ignore options
Date
The options "sync", "async", "dirsync", "lazytime", "nolazytime", "mand"
and "nomand" make no sense for the sysfs filesystem. If these options are
supplied to fsconfig(FSCONFIG_SET_FLAG), then return -EINVAL instead of
silently ignoring the option.

Any implementation, such as mount(8) that needs to parse this option
without failing should simply ignore the return value from fsconfig().

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
---
fs/sysfs/mount.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index ba576a976e8c..4797b7952fc5 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -49,7 +49,7 @@ static void sysfs_fs_context_free(struct fs_context *fc)

static const struct fs_context_operations sysfs_fs_context_ops = {
.free = sysfs_fs_context_free,
- .parse_param = vfs_parse_sb_flag,
+ .parse_param = vfs_parse_ro_rw,
.get_tree = sysfs_get_tree,
};

--
2.21.0
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