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Diffstat (limited to 'fs/namespace.c')
-rw-r--r--fs/namespace.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index 86a86be2b0ef..a5d37b97088f 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -6232,9 +6232,8 @@ static bool mnt_already_visible(struct mnt_namespace *ns,
{
int new_flags = *new_mnt_flags;
struct mount *mnt, *n;
- bool visible = false;
- down_read(&namespace_sem);
+ guard(namespace_shared)();
rbtree_postorder_for_each_entry_safe(mnt, n, &ns->mounts, mnt_node) {
struct mount *child;
int mnt_flags;
@@ -6281,13 +6280,10 @@ static bool mnt_already_visible(struct mnt_namespace *ns,
/* Preserve the locked attributes */
*new_mnt_flags |= mnt_flags & (MNT_LOCK_READONLY | \
MNT_LOCK_ATIME);
- visible = true;
- goto found;
+ return true;
next: ;
}
-found:
- up_read(&namespace_sem);
- return visible;
+ return false;
}
static bool mount_too_revealing(const struct super_block *sb, int *new_mnt_flags)