diff options
| author | Ian Kent <raven@themaw.net> | 2019-01-04 02:27:43 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-01-05 00:13:47 +0300 |
| commit | f5162216b7dab0c07e070b8b7f98891a85047f59 (patch) | |
| tree | d258dc7d65ef49d04090f85529886e734fe29d78 /include | |
| parent | 9d8719a42e4671cfe27733d82b5a071295ab9975 (diff) | |
| download | linux-f5162216b7dab0c07e070b8b7f98891a85047f59.tar.xz | |
autofs: add strictexpire mount option
Commit 092a53452bb7 ("autofs: take more care to not update last_used on
path walk") helped to (partially) resolve a problem where automounts
were not expiring due to aggressive accesses from user space.
This patch was later reverted because, for very large environments, it
meant more mount requests from clients and when there are a lot of
clients this caused a fairly significant increase in server load.
But there is a need for both types of expire check, depending on use
case, so add a mount option to allow for strict update of last use of
autofs dentrys (which just means not updating the last use on path walk
access).
Link: http://lkml.kernel.org/r/154296973880.9889.14085372741514507967.stgit@pluto-themaw-net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/auto_fs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/uapi/linux/auto_fs.h b/include/uapi/linux/auto_fs.h index df31aa9c9a8c..082119630b49 100644 --- a/include/uapi/linux/auto_fs.h +++ b/include/uapi/linux/auto_fs.h @@ -23,7 +23,7 @@ #define AUTOFS_MIN_PROTO_VERSION 3 #define AUTOFS_MAX_PROTO_VERSION 5 -#define AUTOFS_PROTO_SUBVERSION 3 +#define AUTOFS_PROTO_SUBVERSION 4 /* * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed |