mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-04 07:26:44 +07:00
1f1e030bf7
The hash.h hash_long function, when used on a 64 bit machine, ignores many of the middle-order bits. (The prime chosen it too bit-sparse). IP addresses for clients of an NFS server are very likely to differ only in the low-order bits. As addresses are stored in network-byte-order, these bits become middle-order bits in a little-endian 64bit 'long', and so do not contribute to the hash. Thus you can have the situation where all clients appear on one hash chain. So, until hash_long is fixed (or maybe forever), us a hash function that works well on IP addresses - xor the bytes together. Thanks to "Iozone" <capps@iozone.org> for identifying this problem. Cc: "Iozone" <capps@iozone.org> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
||
---|---|---|
.. | ||
auth_gss | ||
auth_null.c | ||
auth_unix.c | ||
auth.c | ||
cache.c | ||
clnt.c | ||
Makefile | ||
pmap_clnt.c | ||
rpc_pipe.c | ||
sched.c | ||
socklib.c | ||
stats.c | ||
sunrpc_syms.c | ||
svc.c | ||
svcauth_unix.c | ||
svcauth.c | ||
svcsock.c | ||
sysctl.c | ||
timer.c | ||
xdr.c | ||
xprt.c | ||
xprtsock.c |