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| author | Christian Brauner <brauner@kernel.org> | 2024-07-19 13:41:48 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-07-24 10:53:13 +0200 |
| commit | 8eac5358ad3bbc007156a0f9ea5637ee7ae421b5 (patch) | |
| tree | 4bd1367ed2d3448b7abc6c56f0f96e5d9d5653ac | |
| parent | 51d37982bbac3ea0ca21b2797a9cb0044272b3aa (diff) | |
fs: use all available ids
The counter is unconditionally incremented for each mount allocation.
If we set it to 1ULL << 32 we're losing 4294967296 as the first valid
non-32 bit mount id.
Link: https://lore.kernel.org/r/20240719-work-mount-namespace-v1-1-834113cab0d2@kernel.org
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | fs/namespace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 221db9de4729..328087a4df8a 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -70,7 +70,7 @@ static DEFINE_IDA(mnt_id_ida); static DEFINE_IDA(mnt_group_ida); /* Don't allow confusion with old 32bit mount ID */ -#define MNT_UNIQUE_ID_OFFSET (1ULL << 32) +#define MNT_UNIQUE_ID_OFFSET (1ULL << 31) static atomic64_t mnt_id_ctr = ATOMIC64_INIT(MNT_UNIQUE_ID_OFFSET); static struct hlist_head *mount_hashtable __ro_after_init; |