This is a note to let you know that I've just added the patch titled
bcache: fixup init dirty data errors
to the 5.15-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:
bcache-fixup-init-dirty-data-errors.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7cc47e64d3d69786a2711a4767e26b26ba63d7ed Mon Sep 17 00:00:00 2001
From: Mingzhe Zou <mingzhe.zou@xxxxxxxxxxxx>
Date: Mon, 20 Nov 2023 13:24:58 +0800
Subject: bcache: fixup init dirty data errors
From: Mingzhe Zou <mingzhe.zou@xxxxxxxxxxxx>
commit 7cc47e64d3d69786a2711a4767e26b26ba63d7ed upstream.
We found that after long run, the dirty_data of the bcache device
will have errors. This error cannot be eliminated unless re-register.
We also found that reattach after detach, this error can accumulate.
In bch_sectors_dirty_init(), all inode <= d->id keys will be recounted
again. This is wrong, we only need to count the keys of the current
device.
Fixes: b144e45fc576 ("bcache: make bch_sectors_dirty_init() to be multithreaded")
Signed-off-by: Mingzhe Zou <mingzhe.zou@xxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Coly Li <colyli@xxxxxxx>
Link: https://lore.kernel.org/r/20231120052503.6122-6-colyli@xxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/bcache/writeback.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -981,8 +981,11 @@ void bch_sectors_dirty_init(struct bcach
op.count = 0;
for_each_key_filter(&c->root->keys,
- k, &iter, bch_ptr_invalid)
+ k, &iter, bch_ptr_invalid) {
+ if (KEY_INODE(k) != op.inode)
+ continue;
sectors_dirty_init_fn(&op.op, c->root, k);
+ }
rw_unlock(0, c->root);
return;
Patches currently in stable-queue which might be from mingzhe.zou@xxxxxxxxxxxx are
queue-5.15/bcache-fixup-init-dirty-data-errors.patch
queue-5.15/bcache-fixup-lock-c-root-error.patch
queue-5.15/bcache-fixup-multi-threaded-bch_sectors_dirty_init-wake-up-race.patch
