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| author | Eric W. Biederman <ebiederm@xmission.com> | 2017-10-31 15:54:32 -0500 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2017-10-31 17:23:11 -0500 |
| commit | 11a8b9270e16e36d5fb607ba4b60db2958b7c625 (patch) | |
| tree | 82ba6ad20d0ffdb4907035d809c712ca13b0910c /kernel/user_namespace.c | |
| parent | 6397fac4915ab3002dc15aae751455da1a852f25 (diff) | |
| download | lwn-11a8b9270e16e36d5fb607ba4b60db2958b7c625.tar.gz lwn-11a8b9270e16e36d5fb607ba4b60db2958b7c625.zip | |
userns: Don't special case a count of 0
We can always use a count of 1 so there is no reason to have
a special case of a count of 0.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'kernel/user_namespace.c')
| -rw-r--r-- | kernel/user_namespace.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index 5fd2d53dbc75..c9904ee084c4 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -232,11 +232,7 @@ static int cmp_map_id(const void *k, const void *e) const struct idmap_key *key = k; const struct uid_gid_extent *el = e; - /* handle map_id_range_down() */ - if (key->count) - id2 = key->id + key->count - 1; - else - id2 = key->id; + id2 = key->id + key->count - 1; /* handle map_id_{down,up}() */ if (key->map_up) @@ -362,7 +358,7 @@ static u32 map_id_down(struct uid_gid_map *map, u32 id) if (extents <= UID_GID_MAP_MAX_BASE_EXTENTS) return map_id_down_base(map, id); - return map_id_range_down_max(map, id, 0); + return map_id_range_down_max(map, id, 1); } /** @@ -404,7 +400,7 @@ static u32 map_id_up_max(struct uid_gid_map *map, u32 id) struct idmap_key key; key.map_up = true; - key.count = 0; + key.count = 1; key.id = id; extents = map->nr_extents; |