proc_fill_cache(): switch to d_alloc_parallel()
... making it usable with directory locked shared
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/proc/base.c b/fs/proc/base.c
index b1755b2..15b60f1 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1819,12 +1819,17 @@
child = d_hash_and_lookup(dir, &qname);
if (!child) {
- child = d_alloc(dir, &qname);
- if (!child)
+ DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
+ child = d_alloc_parallel(dir, &qname, &wq);
+ if (IS_ERR(child))
goto end_instantiate;
- if (instantiate(d_inode(dir), child, task, ptr) < 0) {
- dput(child);
- goto end_instantiate;
+ if (d_in_lookup(child)) {
+ int err = instantiate(d_inode(dir), child, task, ptr);
+ d_lookup_done(child);
+ if (err < 0) {
+ dput(child);
+ goto end_instantiate;
+ }
}
}
inode = d_inode(child);