Revision 23918b03060f6e572168fdde1798a905679d2e06 authored by Trond Myklebust on 20 November 2008, 21:06:21 UTC, committed by Linus Torvalds on 20 November 2008, 21:17:40 UTC
Fix a regression reported by Max Kellermann whereby kernel profiling
showed that his clients were spending 45% of their time in
rpcauth_lookup_credcache.

It turns out that although his processes had identical uid/gid/groups,
generic_match() was failing to detect this, because the task->group_info
pointers were not shared. This again lead to the creation of a huge number
of identical credentials at the RPC layer.

The regression is fixed by comparing the contents of task->group_info
if the actual pointers are not identical.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 0cb39aa
History
File Mode Size
firmware_class
kobject
kprobes
markers
tracepoints
Kconfig -rw-r--r-- 1.0 KB
Makefile -rw-r--r-- 100 bytes

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