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authorNeilBrown <neilb@suse.com>2018-11-30 10:04:08 +1100
committerJeff Layton <jlayton@kernel.org>2018-11-30 11:26:12 -0500
commit7b587e1a5a6cf6035ab1fbd6a1d00ce604eaf488 (patch)
tree617a4b092a7bb308366c5be64ae1774138a9740e
parentad6bbd8b18dad182a7e91d7826e27e9a64d935f9 (diff)
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NFS: use locks_copy_lock() to copy locks.
Using memcpy() to copy lock requests leaves the various list_head in an inconsistent state. As we will soon attach a list of conflicting request to another pending request, we need these lists to be consistent. So change NFS to use locks_init_lock/locks_copy_lock instead of memcpy. Signed-off-by: NeilBrown <neilb@suse.com> Reviewed-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Jeff Layton <jlayton@kernel.org>
-rw-r--r--fs/nfs/nfs4proc.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 867457d6dfbe..0ba2b0fb8ff3 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -6311,7 +6311,8 @@ static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
/* Ensure we don't close file until we're done freeing locks! */
p->ctx = get_nfs_open_context(ctx);
p->l_ctx = nfs_get_lock_context(ctx);
- memcpy(&p->fl, fl, sizeof(p->fl));
+ locks_init_lock(&p->fl);
+ locks_copy_lock(&p->fl, fl);
p->server = NFS_SERVER(inode);
return p;
}
@@ -6533,7 +6534,8 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
p->server = server;
refcount_inc(&lsp->ls_count);
p->ctx = get_nfs_open_context(ctx);
- memcpy(&p->fl, fl, sizeof(p->fl));
+ locks_init_lock(&p->fl);
+ locks_copy_lock(&p->fl, fl);
return p;
out_free_seqid:
nfs_free_seqid(p->arg.open_seqid);