This is a note to let you know that I've just added the patch titled
dax/bus.c: don't use down_write_killable for non-user processes
to the 6.9-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:
dax-bus.c-don-t-use-down_write_killable-for-non-user.patch
and it can be found in the queue-6.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ec98f16594074cb1a00c703e91b59c0f284ec9ab
Author: Vishal Verma <vishal.l.verma@xxxxxxxxx>
Date: Tue Apr 30 11:44:25 2024 -0600
dax/bus.c: don't use down_write_killable for non-user processes
[ Upstream commit e39dbcfba714c4c2e924e96fc8fdde1080a5a737 ]
Change an instance of down_write_killable() to a simple down_write() where
there is no user process that might want to interrupt the operation.
Link: https://lkml.kernel.org/r/20240430-vv-dax_abi_fixes-v3-3-e3dcd755774c@xxxxxxxxx
Fixes: c05ae9d85b47 ("dax/bus.c: replace driver-core lock usage by a local rwsem")
Signed-off-by: Vishal Verma <vishal.l.verma@xxxxxxxxx>
Reported-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Alison Schofield <alison.schofield@xxxxxxxxx>
Cc: Dave Jiang <dave.jiang@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
index e2c7354ce3281..0011a6e6a8f2a 100644
--- a/drivers/dax/bus.c
+++ b/drivers/dax/bus.c
@@ -1540,12 +1540,8 @@ static struct dev_dax *__devm_create_dev_dax(struct dev_dax_data *data)
struct dev_dax *devm_create_dev_dax(struct dev_dax_data *data)
{
struct dev_dax *dev_dax;
- int rc;
-
- rc = down_write_killable(&dax_region_rwsem);
- if (rc)
- return ERR_PTR(rc);
+ down_write(&dax_region_rwsem);
dev_dax = __devm_create_dev_dax(data);
up_write(&dax_region_rwsem);
