From: Trond Myklebust Date: Wed, 9 May 2007 13:00:18 +0000 (-0400) Subject: NFS: Remove redundant check in nfs_check_verifier() X-Git-Tag: v2.6.22-rc1~139^2~6 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e70c490810dc683fad39e57cf00e69d5f120c542;p=linux-2.6 NFS: Remove redundant check in nfs_check_verifier() The check for nfs_attribute_timeout(dir) in nfs_check_verifier is redundant: nfs_lookup_revalidate() will already call nfs_revalidate_inode() on the parent dir when necessary. The only case where this is not done is the case of a negative dentry. Fix this case by moving up the revalidation code. Signed-off-by: Trond Myklebust --- diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index fced7d1d48..469cf66e1d 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -655,9 +655,7 @@ static int nfs_check_verifier(struct inode *dir, struct dentry *dentry) if (IS_ROOT(dentry)) return 1; verf = (unsigned long)dentry->d_fsdata; - if ((NFS_I(dir)->cache_validity & NFS_INO_INVALID_ATTR) != 0 - || nfs_attribute_timeout(dir) - || nfs_caches_unstable(dir) + if (nfs_caches_unstable(dir) || verf != NFS_I(dir)->cache_change_attribute) return 0; return 1; @@ -769,6 +767,10 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd) nfs_inc_stats(dir, NFSIOS_DENTRYREVALIDATE); inode = dentry->d_inode; + /* Revalidate parent directory attribute cache */ + if (nfs_revalidate_inode(NFS_SERVER(dir), dir) < 0) + goto out_zap_parent; + if (!inode) { if (nfs_neg_need_reval(dir, dentry, nd)) goto out_bad; @@ -782,10 +784,6 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd) goto out_bad; } - /* Revalidate parent directory attribute cache */ - if (nfs_revalidate_inode(NFS_SERVER(dir), dir) < 0) - goto out_zap_parent; - /* Force a full look up iff the parent directory has changed */ if (nfs_check_verifier(dir, dentry)) { if (nfs_lookup_verify_inode(inode, nd))