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authorOlaf Kirch <okir@suse.de>2006-10-04 02:16:03 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 07:55:18 -0700
commit39be4502cb75dc26007fe1659735b26c8e63fcc6 (patch)
tree0f4c6bf14f8a975178b3192bfc9ba942da56619f /fs/lockd/mon.c
parent[PATCH] knfsd: make nlmclnt_next_cookie SMP safe (diff)
downloadlinux-dev-39be4502cb75dc26007fe1659735b26c8e63fcc6.tar.xz
linux-dev-39be4502cb75dc26007fe1659735b26c8e63fcc6.zip
[PATCH] knfsd: match GRANTED_RES replies using cookies
When we send a GRANTED_MSG call, we current copy the NLM cookie provided in the original LOCK call - because in 1996, some broken clients seemed to rely on this bug. However, this means the cookies are not unique, so that when the client's GRANTED_RES message comes back, we cannot simply match it based on the cookie, but have to use the client's IP address in addition. Which breaks when you have a multi-homed NFS client. The X/Open spec explicitly mentions that clients should not expect the same cookie; so one may hope that any clients that were broken in 1996 have either been fixed or rendered obsolete. Signed-off-by: Olaf Kirch <okir@suse.de> 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 'fs/lockd/mon.c')
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