]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
autofs: take more care to not update last_used on path walk
authorIan Kent <raven@themaw.net>
Mon, 27 Feb 2017 22:27:16 +0000 (14:27 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 28 Feb 2017 02:43:45 +0000 (18:43 -0800)
commit092a53452bb7a6ca436b2d3859e7b1f1ec45479f
treebac0523edfd04c640c961b6b2a849f48fa684370
parent3bb2fbdaba16386f520b5750d649a30643a4ab9e
autofs: take more care to not update last_used on path walk

GUI environments seem to be becoming more agressive at scanning
filesystems, to the point where autofs cannot expire mounts at all.

This is one key reason the update of the autofs dentry info last_used
field is done in the expire system when the dentry is seen to be in use.

But somewhere along the way instances of the update has crept back into
the autofs path walk functions which, with the more aggressive file
access patterns, is preventing expiration.

Changing the update in the path walk functions allows autofs to at least
make progress in spite of frequent immediate re-mounts from file
accesses.

Link: http://lkml.kernel.org/r/148577167169.9801.1377050092212016834.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Tomohiro Kusumi <tkusumi@tuxera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/autofs4/root.c