On Thu, Nov 29, 2012 at 06:25:19AM +0000, Al Viro wrote: > Umm... set_blocksize() is calling kill_bdev(), which does > truncate_inode_pages(mapping, 0). What's going to happen to data in > the dirty pages? IO in progress is not the only thing to worry about...
Note that sync_blockdev() a few lines prior to that is good only if we have no other processes doing write(2) (or dirtying the mmapped pages, for that matter). The window isn't too wide, but... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
