From: Jens Axboe <axboe@kernel.dk>
Date: Mon, 15 Feb 2021 20:42:42 +0000 (-0700)
Subject: Revert "proc: don't allow async path resolution of /proc/self components"
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=refs%2Fheads%2F5.10-stable-backport.2;p=linux-2.6-block.git

Revert "proc: don't allow async path resolution of /proc/self components"

[ Upstream commit 9e8d9e829c2142cf1d7756e9ed2e0b4c7569d84c ]

This reverts commit 8d4c3e76e3be11a64df95ddee52e99092d42fc19.

No longer needed, as the io-wq worker threads have the right identity.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/fs/proc/self.c b/fs/proc/self.c
index cc71ce3466dc..72cd69bcaf4a 100644
--- a/fs/proc/self.c
+++ b/fs/proc/self.c
@@ -16,13 +16,6 @@ static const char *proc_self_get_link(struct dentry *dentry,
 	pid_t tgid = task_tgid_nr_ns(current, ns);
 	char *name;
 
-	/*
-	 * Not currently supported. Once we can inherit all of struct pid,
-	 * we can allow this.
-	 */
-	if (current->flags & PF_KTHREAD)
-		return ERR_PTR(-EOPNOTSUPP);
-
 	if (!tgid)
 		return ERR_PTR(-ENOENT);
 	/* max length of unsigned int in decimal + NULL term */