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authorNeilBrown <neilb@suse.de>2006-03-27 01:15:00 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-27 08:44:41 -0800
commiteab7e2e647c348b418e8715ecaca0177e1b473c7 (patch)
tree91aa453d6313eee89c8b19eea48699b1143264aa /net/sunrpc
parentefc36aa5608f5717338747e152c23f2cfdb14697 (diff)
[PATCH] knfsd: Break the hard linkage from svc_expkey to svc_export
Current svc_expkey holds a pointer to the svc_export structure, so updates to that structure have to be in-place, which is a wart on the whole cache infrastruct. So we break that linkage and just do a second lookup. If this became a performance issue, it would be possible to put a direct link back in which was only used conditionally. i.e. when an object is replaced in the cache, we set a flag in the old object. When dereferencing the link from svc_expkey, if the flag is set, we drop the reference and do a fresh lookup. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'net/sunrpc')
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