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significantly. Upon investigation this was caused by name cache misses for lookups of "..". For name cache entries for non-".." directories, the cache entry serves double duty. It maps both the named directory plus ".." for the parent of the directory. As such, two ctime values (one for each of the directory and its parent) need to be saved in the name cache entry. This patch adds an entry for ctime of the parent directory to the name cache. It also adds an additional uma zone for large entries with this time value, in order to minimize memory wastage. As well, it fixes a couple of cases where the mtime of the parent directory was being saved instead of ctime for positive name cache entries. With this patch, Lookup RPC counts return to values similar to pre-r230394 kernels. Reported by: bde Discussed with: kib Reviewed by: jhb MFC after: 2 weeks |
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| .. | ||
| nfs_bio.c | ||
| nfs_kdtrace.c | ||
| nfs_krpc.c | ||
| nfs_nfsiod.c | ||
| nfs_node.c | ||
| nfs_subs.c | ||
| nfs_vfsops.c | ||
| nfs_vnops.c | ||
| nfs.h | ||
| nfsargs.h | ||
| nfsm_subs.h | ||
| nfsmount.h | ||
| nfsnode.h | ||
| nfsstats.h | ||
| nlminfo.h | ||