[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 1 of 2] blkfront: sector size > 512
The first and last sector as well as the sector number of the request is expressed in 512 bytes units, independently from the real sector size. Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> --- diff -r 61404d971c92 extras/mini-os/blkfront.c --- a/extras/mini-os/blkfront.c Thu May 21 04:31:47 2009 +0100 +++ b/extras/mini-os/blkfront.c Thu May 21 11:50:56 2009 +0100 @@ -310,14 +310,14 @@ req->nr_segments = n; req->handle = dev->handle; req->id = (uintptr_t) aiocbp; - req->sector_number = aiocbp->aio_offset / dev->info.sector_size; + req->sector_number = aiocbp->aio_offset / 512; for (j = 0; j < n; j++) { req->seg[j].first_sect = 0; - req->seg[j].last_sect = PAGE_SIZE / dev->info.sector_size - 1; + req->seg[j].last_sect = PAGE_SIZE / 512 - 1; } - req->seg[0].first_sect = ((uintptr_t)aiocbp->aio_buf & ~PAGE_MASK) / dev->info.sector_size; - req->seg[n-1].last_sect = (((uintptr_t)aiocbp->aio_buf + aiocbp->aio_nbytes - 1) & ~PAGE_MASK) / dev->info.sector_size; + req->seg[0].first_sect = ((uintptr_t)aiocbp->aio_buf & ~PAGE_MASK) / 512; + req->seg[n-1].last_sect = (((uintptr_t)aiocbp->aio_buf + aiocbp->aio_nbytes - 1) & ~PAGE_MASK) / 512; for (j = 0; j < n; j++) { uintptr_t data = start + j * PAGE_SIZE; if (!write) { _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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