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NFSv4: Allow entries in the idmap cache to expire

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If someone changes the uid/gid mapping in userland, then we do eventually
 want those changes to be propagated to the kernel. Currently the kernel
 assumes that it may cache entries forever.

 Add an expiration time + garbage collector for idmap entries.

 Signed-off-by: Trond Myklebust <[email protected]>
This commit is contained in:
Trond Myklebust 2006-01-03 09:55:57 +01:00
commit 58df095b73
5 changed files with 39 additions and 0 deletions
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4
Documentation/kernel-parameters.txt
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@ -914,6 +914,10 @@ running once the system is up.
[NFS] set the TCP port on which the NFSv4 callback
channel should listen.
nfs.idmap_cache_timeout=
[NFS] set the maximum lifetime for idmapper cache
entries.
nmi_watchdog= [KNL,BUGS=IA-32] Debugging features for SMP kernels
no387 [BUGS=IA-32] Tells the kernel to use the 387 maths