From 2de7d46289702bcc5727cb70857f8f6860c85ce8 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Wed, 25 Nov 2015 13:50:11 -0500 Subject: nfs: if we have no valid attrs, then don't declare the attribute cache valid [ Upstream commit c812012f9ca7cf89c9e1a1cd512e6c3b5be04b85 ] If we pass in an empty nfs_fattr struct to nfs_update_inode, it will (correctly) not update any of the attributes, but it then clears the NFS_INO_INVALID_ATTR flag, which indicates that the attributes are up to date. Don't clear the flag if the fattr struct has no valid attrs to apply. Reviewed-by: Steve French Signed-off-by: Jeff Layton Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust Signed-off-by: Sasha Levin --- fs/nfs/inode.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'fs/nfs') diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 00689a8a85e4..d7cfc6e42b5e 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1717,7 +1717,11 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) nfsi->attrtimeo_timestamp = now; } } - invalid &= ~NFS_INO_INVALID_ATTR; + + /* Don't declare attrcache up to date if there were no attrs! */ + if (fattr->valid != 0) + 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))) -- cgit v1.2.3