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Commit 3781764b authored by Al Viro's avatar Al Viro
Browse files

proc_fill_cache(): switch to d_alloc_parallel() 



... making it usable with directory locked shared

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 61922694

fs/proc/base.c

+10 −5
Original line number Diff line number Diff line
@@ -1819,14 +1819,19 @@ bool proc_fill_cache(struct file *file, struct dir_context *ctx, 


	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) {

		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);

	ino = inode->i_ino;

	type = inode->i_mode >> 12;