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NFS: Ensure we revalidate the inode correctly after remove or rename 

We may need to revalidate the change attribute, ctime and the nlinks count.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2018-04-08 18:11:18 -04:00 committed by Trond Myklebust
parent 821a868a23
commit 59a707b0d4
1 changed files with 14 additions and 4 deletions
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18
fs/nfs/dir.c
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@ -1284,11 +1284,13 @@ static void nfs_drop_nlink(struct inode *inode)
{
spin_lock(&inode->i_lock);
/* drop the inode if we're reasonably sure this is the last link */
if (inode->i_nlink == 1)
clear_nlink(inode);
if (inode->i_nlink > 0)
drop_nlink(inode);
NFS_I(inode)->attr_gencount = nfs_inc_attr_generation_counter();
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_CHANGE
| NFS_INO_INVALID_CTIME
| NFS_INO_INVALID_OTHER;
| NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED;
spin_unlock(&inode->i_lock);
}
@ -2050,7 +2052,15 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
} else
error = task->tk_status;
rpc_put_task(task);
nfs_mark_for_revalidate(old_inode);
/* Ensure the inode attributes are revalidated */
if (error == 0) {
spin_lock(&old_inode->i_lock);
NFS_I(old_inode)->attr_gencount = nfs_inc_attr_generation_counter();
NFS_I(old_inode)->cache_validity |= NFS_INO_INVALID_CHANGE
| NFS_INO_INVALID_CTIME
| NFS_INO_REVAL_FORCED;
spin_unlock(&old_inode->i_lock);
}
out:
if (rehash)
d_rehash(rehash);