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authorBenjamin Coddington <bcodding@redhat.com>2016-07-28 21:41:10 +0300
committerTrond Myklebust <trond.myklebust@primarydata.com>2016-07-28 21:49:08 +0300
commit944171cbf499d3445c749f7c13c46de0a564a905 (patch)
treefb4d338b9f580419e59da2bc59ad2f9733ed02d3 /fs/nfs/inode.c
parent698c937b0d17dd55227622b919482fc720cc1095 (diff)
downloadlinux-944171cbf499d3445c749f7c13c46de0a564a905.tar.xz
pNFS: Actively set attributes as invalid if LAYOUTCOMMIT is outstanding
A LAYOUTCOMMIT then subsequent GETATTR may both return the same attributes, and in that case NFS_INO_INVALID_ATTR is never set on the second pass through nfs_update_inode(). The existing check to skip the clearing of NFS_INO_INVALID_ATTR if a LAYOUTCOMMIT is outstanding does not help in this case (see commit 10b7e9ad4488: "pNFS: Don't mark the inode as revalidated if a LAYOUTCOMMIT is outstanding"). We know that if a LAYOUTCOMMIT is outstanding then attributes will need upating, so always set NFS_INO_INVALID_ATTR. Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/inode.c')
-rw-r--r--fs/nfs/inode.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index f108d58101f8..bf4ec5ecc97e 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1665,7 +1665,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
unsigned long now = jiffies;
unsigned long save_cache_validity;
bool have_writers = nfs_file_has_buffered_writers(nfsi);
- bool cache_revalidated;
+ bool cache_revalidated = true;
dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%x)\n",
__func__, inode->i_sb->s_id, inode->i_ino,
@@ -1714,8 +1714,10 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
/* Do atomic weak cache consistency updates */
invalid |= nfs_wcc_update_inode(inode, fattr);
-
- cache_revalidated = !pnfs_layoutcommit_outstanding(inode);
+ if (pnfs_layoutcommit_outstanding(inode)) {
+ nfsi->cache_validity |= save_cache_validity & NFS_INO_INVALID_ATTR;
+ cache_revalidated = false;
+ }
/* More cache consistency checks */
if (fattr->valid & NFS_ATTR_FATTR_CHANGE) {