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NFS: Don't force unnecessary cache invalidation in nfs_update_inode() 

If we managed to revalidate all the attributes, then there is no reason
to mark them as invalid again. We do, however want to ensure that we
set nfsi->attrtimeo correctly.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust 2018-03-20 16:53:30 -04:00 committed by Anna Schumaker
parent 783b194c6e
commit cac88f942d
1 changed files with 3 additions and 4 deletions
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7
fs/nfs/inode.c
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@ -1799,6 +1799,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
| NFS_INO_INVALID_DATA
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
/* Force revalidate of all attributes */
save_cache_validity |= NFS_INO_INVALID_ATTR;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
}
@ -1937,6 +1939,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
/* Update attrtimeo value if we're out of the unstable period */
if (invalid & NFS_INO_INVALID_ATTR) {
invalid &= ~NFS_INO_INVALID_ATTR;
nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = now;
@ -1957,10 +1960,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
nfsi->attr_gencount = fattr->gencount;
}
/* Don't declare attrcache up to date if there were no attrs! */
if (cache_revalidated)
invalid &= ~NFS_INO_INVALID_ATTR;
/* Don't invalidate the data if we were to blame */
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)
|| S_ISLNK(inode->i_mode)))