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Commit 3235b403 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4: Set a barrier in the update_changeattr() helper 



Ensure that we don't regress the changes that were made to the
directory.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
Tested-by: default avatarChuck Lever <chuck.lever@oracle.com>
parent 92d64e47

fs/nfs/inode.c

+1 −0
Original line number Diff line number Diff line
@@ -1249,6 +1249,7 @@ unsigned long nfs_inc_attr_generation_counter(void) 
{

	return atomic_long_inc_return(&nfs_attr_generation_counter);

}

EXPORT_SYMBOL_GPL(nfs_inc_attr_generation_counter);



void nfs_fattr_init(struct nfs_fattr *fattr)

{

fs/nfs/nfs4proc.c

+1 −0
Original line number Diff line number Diff line
@@ -901,6 +901,7 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) 
	if (!cinfo->atomic || cinfo->before != dir->i_version)

		nfs_force_lookup_revalidate(dir);

	dir->i_version = cinfo->after;

	nfsi->attr_gencount = nfs_inc_attr_generation_counter();

	nfs_fscache_invalidate(dir);

	spin_unlock(&dir->i_lock);

}