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NFS: Don't flush caches for a getattr that races with writeback 

If there were outstanding writes then chalk up the unexpected change
attribute on the server to them.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2016-06-07 21:44:08 -04:00
parent 5edb56491d
commit 38512aa98a
1 changed files with 9 additions and 6 deletions
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15
fs/nfs/inode.c
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@ -1729,12 +1729,15 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if (inode->i_version != fattr->change_attr) {
dprintk("NFS: change_attr change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
invalid |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_DATA
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
/* Could it be a race with writeback? */
if (nfsi->nrequests == 0) {
invalid |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_DATA
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
}
inode->i_version = fattr->change_attr;
}
} else {