Patch "Revert "blk-cgroup: dropping parent refcount after pd_free_fn() is done"" has been added to the 6.1-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    Revert "blk-cgroup: dropping parent refcount after pd_free_fn() is done"

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     revert-blk-cgroup-dropping-parent-refcount-after-pd_free_fn-is-done.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From a53f77eb6c2d0b1befbcecbb70ff6f94ce6d2817 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Date: Sat, 11 Mar 2023 10:34:39 +0100
Subject: Revert "blk-cgroup: dropping parent refcount after pd_free_fn() is done"

From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

This reverts commit 029f1f1efa84387474b445dac4281cf95a398db8 which is
commit c7241babf0855d8a6180cd1743ff0ec34de40b4e upstream.

It is reported to cause problems, as only 2 of the 3 patch series were
applied to the stable branches.

Reported-by: Mike Cloaked <mike.cloaked@xxxxxxxxx>
Reported-by: Eric Biggers <ebiggers@xxxxxxxxxx>
Cc: Yu Kuai <yukuai3@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Sasha Levin <sashal@xxxxxxxxxx>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217174
Link: https://lore.kernel.org/r/ZAuPkCn49urWBN5P@sol.localdomain
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 block/blk-cgroup.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -93,8 +93,6 @@ static void blkg_free_workfn(struct work
 		if (blkg->pd[i])
 			blkcg_policy[i]->pd_free_fn(blkg->pd[i]);
 
-	if (blkg->parent)
-		blkg_put(blkg->parent);
 	if (blkg->q)
 		blk_put_queue(blkg->q);
 	free_percpu(blkg->iostat_cpu);
@@ -129,6 +127,8 @@ static void __blkg_release(struct rcu_he
 
 	/* release the blkcg and parent blkg refs this blkg has been holding */
 	css_put(&blkg->blkcg->css);
+	if (blkg->parent)
+		blkg_put(blkg->parent);
 	blkg_free(blkg);
 }
 


Patches currently in stable-queue which might be from gregkh@xxxxxxxxxxxxxxxxxxx are

queue-6.1/revert-blk-cgroup-synchronize-pd_free_fn-from-blkg_free_workfn-and-blkcg_deactivate_policy.patch
queue-6.1/revert-blk-cgroup-dropping-parent-refcount-after-pd_free_fn-is-done.patch



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux