The current vnode layout is not smp-friendly by having frequently read data avoidably sharing cachelines with very frequently modified fields. In particular v_iflag inspected for VI_DOOMED can be found in the same line with v_usecount. Instead make it available in the same cacheline as the v_op, v_data and v_type which all get read all the time. v_type is avoidably 4 bytes while the necessary data will easily fit in 1. Shrinking it frees up 3 bytes, 2 of which get used here to introduce a new flag field with a new value: VIRF_DOOMED. Reviewed by: kib, jeff Differential Revision: https://reviews.freebsd.org/D22715 |
||
---|---|---|
.. | ||
nfs_fha_new.c | ||
nfs_fha_new.h | ||
nfs_nfsdcache.c | ||
nfs_nfsdkrpc.c | ||
nfs_nfsdport.c | ||
nfs_nfsdserv.c | ||
nfs_nfsdsocket.c | ||
nfs_nfsdstate.c | ||
nfs_nfsdsubs.c |