loop: LOOP_SET_FD: send uevents for partitions

commit 0dba7a05b9e47d8b546399117b0ddf2426dc6042 upstream.

Remove the suppression of the uevents before scanning for partitions.
The partitions inherit their suppression settings from their parent device,
which lead to the uevents being dropped.

This is similar to the same changes for LOOP_CONFIGURE done in
commit bb430b694226 ("loop: LOOP_CONFIGURE: send uevents for partitions").

Fixes: 498ef5c777d9 ("loop: suppress uevents while reconfiguring the device")
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20250415-loop-uevent-changed-v3-1-60ff69ac6088@linutronix.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index a05229f7c94597c20c1815f0788120f84820bb6c..4b7318f1a6f33bf44c02551b364301e62ce1b17c 100644 (file)
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -792,12 +792,12 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
         * dependency.
         */
        fput(old_file);
+       dev_set_uevent_suppress(disk_to_dev(lo->lo_disk), 0);
        if (partscan)
                loop_reread_partitions(lo);
 
        error = 0;
 done:
-       dev_set_uevent_suppress(disk_to_dev(lo->lo_disk), 0);
        kobject_uevent(&disk_to_dev(lo->lo_disk)->kobj, KOBJ_CHANGE);
        return error;
 
@@ -805,6 +805,7 @@ out_err:
        loop_global_unlock(lo, is_loop);
 out_putf:
        fput(file);
+       dev_set_uevent_suppress(disk_to_dev(lo->lo_disk), 0);
        goto done;
 }