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 6ea448511ff16b01feccf9c700796a96e9f2a28d..8a6c1146df00fda6a9bbd269a7182ea6a1de16b3 100644 (file)
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -624,12 +624,12 @@ 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;
 
@@ -637,6 +637,7 @@ 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;
 }