On 9/22/21 8:37 PM, Ming Lei wrote: > When running ->fallocate(), blkdev_fallocate() should hold > mapping->invalidate_lock to prevent page cache from being accessed, > otherwise stale data may be read in page cache. > > Without this patch, blktests block/009 fails sometimes. With this patch, > block/009 can pass always. > > Also as Jan pointed out, no pages can be created in the discarded area > while you are holding the invalidate_lock, so remove the 2nd > truncate_bdev_range(). Applied, thanks. -- Jens Axboe
