diff options
| author |   Chuck Lever <chuck.lever@oracle.com> | 2011-01-28 12:40:55 -0500 |
|---|---|---|
| committer |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-01-28 13:37:35 -0500 |
| commit | c08e76d0cd4beb759a73c1835d98f5fccc126ed1 (patch) | |
| tree | e1cd5414a2aba7c4e414bf93473f599c40717d80 | |
| parent | NFS: Fix an NFS client lockdep issue (diff) | |
| download | linux-dev-c08e76d0cd4beb759a73c1835d98f5fccc126ed1.tar.xz linux-dev-c08e76d0cd4beb759a73c1835d98f5fccc126ed1.zip | |
NFS: Micro-optimize nfs4_decode_dirent()
Make the decoding of NFSv4 directory entries slightly more efficient
by:
1. Avoiding unnecessary byte swapping when checking XDR booleans,
and
2. Not bumping "p" when its value will be immediately replaced by
xdr_inline_decode()
This commit makes nfs4_decode_dirent() consistent with similar logic
in the other two decode_dirent() functions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | fs/nfs/nfs4xdr.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 2ab8e5cb8f59..009aef9e12bc 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -6086,11 +6086,11 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, __be32 *p = xdr_inline_decode(xdr, 4); if (unlikely(!p)) goto out_overflow; - if (!ntohl(*p++)) { + if (*p == xdr_zero) { p = xdr_inline_decode(xdr, 4); if (unlikely(!p)) goto out_overflow; - if (!ntohl(*p++)) + if (*p == xdr_zero) return -EAGAIN; entry->eof = 1; return -EBADCOOKIE; @@ -6101,7 +6101,7 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, goto out_overflow; entry->prev_cookie = entry->cookie; p = xdr_decode_hyper(p, &entry->cookie); - entry->len = ntohl(*p++); + entry->len = be32_to_cpup(p); p = xdr_inline_decode(xdr, entry->len); if (unlikely(!p)) |