diff options
| author | Lennart Poettering <lennart@poettering.net> | 2013-09-26 20:14:24 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2013-09-26 20:20:30 +0200 |
| commit | a57f7e2c828b852eb32fd810dcea041bb2975501 (patch) | |
| tree | 9d088f212995c20b3ba2d2574ca8027fad25a51b /src/core/automount.h | |
| parent | 6270c1bd8f83e9985458c63688f452be7626766f (diff) | |
core: rework how we match mount units against each other
Previously to automatically create dependencies between mount units we
matched every mount unit agains all others resulting in O(n^2)
complexity. On setups with large amounts of mount units this might make
things slow.
This change replaces the matching code to use a hashtable that is keyed
by a path prefix, and points to a set of units that require that path to
be around. When a new mount unit is installed it is hence sufficient to
simply look up this set of units via its own file system paths to know
which units to order after itself.
This patch also changes all unit types to only create automatic mount
dependencies via the RequiresMountsFor= logic, and this is exposed to
the outside to make things more transparent.
With this change we still have some O(n) complexities in place when
handling mounts, but that's currently unavoidable due to kernel APIs,
and still substantially better than O(n^2) as before.
https://bugs.freedesktop.org/show_bug.cgi?id=69740
Diffstat (limited to 'src/core/automount.h')
| -rw-r--r-- | src/core/automount.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/src/core/automount.h b/src/core/automount.h index 0c6b8a72e9..a7a25d34e0 100644 --- a/src/core/automount.h +++ b/src/core/automount.h @@ -62,8 +62,6 @@ extern const UnitVTable automount_vtable; int automount_send_ready(Automount *a, int status); -int automount_add_one_mount_link(Automount *a, Mount *m); - const char* automount_state_to_string(AutomountState i) _const_; AutomountState automount_state_from_string(const char *s) _pure_; |