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authorJeff Layton <jlayton@poochiereds.net>2015-11-25 13:50:11 -0500
committerTrond Myklebust <trond.myklebust@primarydata.com>2015-11-25 15:31:49 -0500
commitc812012f9ca7cf89c9e1a1cd512e6c3b5be04b85 (patch)
tree3227d80014fadef23401c3a58b658c3a4b1ad1f1
parentnfs: ensure that attrcache is revalidated after a SETATTR (diff)
downloadlinux-dev-c812012f9ca7cf89c9e1a1cd512e6c3b5be04b85.tar.xz
linux-dev-c812012f9ca7cf89c9e1a1cd512e6c3b5be04b85.zip
nfs: if we have no valid attrs, then don't declare the attribute cache valid
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 <steve.french@primarydata.com> Signed-off-by: Jeff Layton <jeff.layton@primarydata.com> Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
-rw-r--r--fs/nfs/inode.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index eda3da3f3a7b..31b0a52223a7 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1827,7 +1827,11 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if ((long)fattr->gencount - (long)nfsi->attr_gencount > 0)
nfsi->attr_gencount = fattr->gencount;
}
- 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)))