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[SCSI] osst: make all the buffer the same size 

This simiplifies the buffer management; all the buffers in osst_buffer
become the same size. This is necessary to use the block layer API (sg
driver was modified in the same way) since the block layer API takes
the same size page frames instead of scatter gatter.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Willem Riede <osst@riede.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
FUJITA Tomonori 2008-12-14 00:55:17 +09:00 committed by James Bottomley
parent 68274794c6
commit 78a42ce8fb
1 changed files with 0 additions and 5 deletions
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5
drivers/scsi/osst.c
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@ -5286,11 +5286,6 @@ static int enlarge_buffer(struct osst_buffer *STbuffer, int need_dma)
struct page *page = alloc_pages(priority, (OS_FRAME_SIZE - got <= PAGE_SIZE) ? 0 : order);
STbuffer->sg[segs].offset = 0;
if (page == NULL) {
if (OS_FRAME_SIZE - got <= (max_segs - segs) * b_size / 2 && order) {
b_size /= 2; /* Large enough for the rest of the buffers */
order--;
continue;
}
printk(KERN_WARNING "osst :W: Failed to enlarge buffer to %d bytes.\n",
OS_FRAME_SIZE);
#if DEBUG