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authorAl Viro <viro@zeniv.linux.org.uk>2020-01-11 22:52:26 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2020-03-13 21:08:17 -0400
commit161aff1d93abf0e5b5e9dbca88928998c155f677 (patch)
tree89d39d7e332ca69cd7b88026a406009fe0b210b9 /fs/namespace.c
parentcbae4d12eeee6b002a1252c4c45213651e8f4b55 (diff)
LOOKUP_MOUNTPOINT: fold path_mountpointat() into path_lookupat()
New LOOKUP flag, telling path_lookupat() to act as path_mountpointat(). IOW, traverse mounts at the final point and skip revalidation of the location where it ends up. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namespace.c')
-rw-r--r--fs/namespace.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index 743980380a8f..a28e4db075ed 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1669,7 +1669,7 @@ int ksys_umount(char __user *name, int flags)
struct path path;
struct mount *mnt;
int retval;
- int lookup_flags = 0;
+ int lookup_flags = LOOKUP_MOUNTPOINT;
if (flags & ~(MNT_FORCE | MNT_DETACH | MNT_EXPIRE | UMOUNT_NOFOLLOW))
return -EINVAL;
@@ -1680,7 +1680,7 @@ int ksys_umount(char __user *name, int flags)
if (!(flags & UMOUNT_NOFOLLOW))
lookup_flags |= LOOKUP_FOLLOW;
- retval = user_path_mountpoint_at(AT_FDCWD, name, lookup_flags, &path);
+ retval = user_path_at(AT_FDCWD, name, lookup_flags, &path);
if (retval)
goto out;
mnt = real_mount(path.mnt);