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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: Trond Myklebust <trond.myklebust@primarydata.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Trond Myklebust 2015-02-26 19:52:06 -05:00
parent 92d64e47b6
commit 3235b40303
2 changed files with 2 additions and 0 deletions
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1
fs/nfs/inode.c
View File

@ -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)
{

1
fs/nfs/nfs4proc.c
View File

@ -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);
}