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Diffstat (limited to 'drivers/md/raid5.c')
-rw-r--r--drivers/md/raid5.c63
1 files changed, 0 insertions, 63 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index d855f9f59b02..347caab99ca0 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -544,35 +544,7 @@ static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done,
544 } 544 }
545 545
546 if (uptodate) { 546 if (uptodate) {
547#if 0
548 struct bio *bio;
549 unsigned long flags;
550 spin_lock_irqsave(&conf->device_lock, flags);
551 /* we can return a buffer if we bypassed the cache or
552 * if the top buffer is not in highmem. If there are
553 * multiple buffers, leave the extra work to
554 * handle_stripe
555 */
556 buffer = sh->bh_read[i];
557 if (buffer &&
558 (!PageHighMem(buffer->b_page)
559 || buffer->b_page == bh->b_page )
560 ) {
561 sh->bh_read[i] = buffer->b_reqnext;
562 buffer->b_reqnext = NULL;
563 } else
564 buffer = NULL;
565 spin_unlock_irqrestore(&conf->device_lock, flags);
566 if (sh->bh_page[i]==bh->b_page)
567 set_buffer_uptodate(bh);
568 if (buffer) {
569 if (buffer->b_page != bh->b_page)
570 memcpy(buffer->b_data, bh->b_data, bh->b_size);
571 buffer->b_end_io(buffer, 1);
572 }
573#else
574 set_bit(R5_UPTODATE, &sh->dev[i].flags); 547 set_bit(R5_UPTODATE, &sh->dev[i].flags);
575#endif
576 if (test_bit(R5_ReadError, &sh->dev[i].flags)) { 548 if (test_bit(R5_ReadError, &sh->dev[i].flags)) {
577 rdev = conf->disks[i].rdev; 549 rdev = conf->disks[i].rdev;
578 printk(KERN_INFO "raid5:%s: read error corrected (%lu sectors at %llu on %s)\n", 550 printk(KERN_INFO "raid5:%s: read error corrected (%lu sectors at %llu on %s)\n",
@@ -618,14 +590,6 @@ static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done,
618 } 590 }
619 } 591 }
620 rdev_dec_pending(conf->disks[i].rdev, conf->mddev); 592 rdev_dec_pending(conf->disks[i].rdev, conf->mddev);
621#if 0
622 /* must restore b_page before unlocking buffer... */
623 if (sh->bh_page[i] != bh->b_page) {
624 bh->b_page = sh->bh_page[i];
625 bh->b_data = page_address(bh->b_page);
626 clear_buffer_uptodate(bh);
627 }
628#endif
629 clear_bit(R5_LOCKED, &sh->dev[i].flags); 593 clear_bit(R5_LOCKED, &sh->dev[i].flags);
630 set_bit(STRIPE_HANDLE, &sh->state); 594 set_bit(STRIPE_HANDLE, &sh->state);
631 release_stripe(sh); 595 release_stripe(sh);
@@ -1619,15 +1583,6 @@ static void handle_stripe5(struct stripe_head *sh)
1619 } else if (test_bit(R5_Insync, &dev->flags)) { 1583 } else if (test_bit(R5_Insync, &dev->flags)) {
1620 set_bit(R5_LOCKED, &dev->flags); 1584 set_bit(R5_LOCKED, &dev->flags);
1621 set_bit(R5_Wantread, &dev->flags); 1585 set_bit(R5_Wantread, &dev->flags);
1622#if 0
1623 /* if I am just reading this block and we don't have
1624 a failed drive, or any pending writes then sidestep the cache */
1625 if (sh->bh_read[i] && !sh->bh_read[i]->b_reqnext &&
1626 ! syncing && !failed && !to_write) {
1627 sh->bh_cache[i]->b_page = sh->bh_read[i]->b_page;
1628 sh->bh_cache[i]->b_data = sh->bh_read[i]->b_data;
1629 }
1630#endif
1631 locked++; 1586 locked++;
1632 PRINTK("Reading block %d (sync=%d)\n", 1587 PRINTK("Reading block %d (sync=%d)\n",
1633 i, syncing); 1588 i, syncing);
@@ -1645,9 +1600,6 @@ static void handle_stripe5(struct stripe_head *sh)
1645 dev = &sh->dev[i]; 1600 dev = &sh->dev[i];
1646 if ((dev->towrite || i == sh->pd_idx) && 1601 if ((dev->towrite || i == sh->pd_idx) &&
1647 (!test_bit(R5_LOCKED, &dev->flags) 1602 (!test_bit(R5_LOCKED, &dev->flags)
1648#if 0
1649|| sh->bh_page[i]!=bh->b_page
1650#endif
1651 ) && 1603 ) &&
1652 !test_bit(R5_UPTODATE, &dev->flags)) { 1604 !test_bit(R5_UPTODATE, &dev->flags)) {
1653 if (test_bit(R5_Insync, &dev->flags) 1605 if (test_bit(R5_Insync, &dev->flags)
@@ -1659,9 +1611,6 @@ static void handle_stripe5(struct stripe_head *sh)
1659 /* Would I have to read this buffer for reconstruct_write */ 1611 /* Would I have to read this buffer for reconstruct_write */
1660 if (!test_bit(R5_OVERWRITE, &dev->flags) && i != sh->pd_idx && 1612 if (!test_bit(R5_OVERWRITE, &dev->flags) && i != sh->pd_idx &&
1661 (!test_bit(R5_LOCKED, &dev->flags) 1613 (!test_bit(R5_LOCKED, &dev->flags)
1662#if 0
1663|| sh->bh_page[i] != bh->b_page
1664#endif
1665 ) && 1614 ) &&
1666 !test_bit(R5_UPTODATE, &dev->flags)) { 1615 !test_bit(R5_UPTODATE, &dev->flags)) {
1667 if (test_bit(R5_Insync, &dev->flags)) rcw++; 1616 if (test_bit(R5_Insync, &dev->flags)) rcw++;
@@ -2197,15 +2146,6 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
2197 } else if (test_bit(R5_Insync, &dev->flags)) { 2146 } else if (test_bit(R5_Insync, &dev->flags)) {
2198 set_bit(R5_LOCKED, &dev->flags); 2147 set_bit(R5_LOCKED, &dev->flags);
2199 set_bit(R5_Wantread, &dev->flags); 2148 set_bit(R5_Wantread, &dev->flags);
2200#if 0
2201 /* if I am just reading this block and we don't have
2202 a failed drive, or any pending writes then sidestep the cache */
2203 if (sh->bh_read[i] && !sh->bh_read[i]->b_reqnext &&
2204 ! syncing && !failed && !to_write) {
2205 sh->bh_cache[i]->b_page = sh->bh_read[i]->b_page;
2206 sh->bh_cache[i]->b_data = sh->bh_read[i]->b_data;
2207 }
2208#endif
2209 locked++; 2149 locked++;
2210 PRINTK("Reading block %d (sync=%d)\n", 2150 PRINTK("Reading block %d (sync=%d)\n",
2211 i, syncing); 2151 i, syncing);
@@ -2224,9 +2164,6 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
2224 if (!test_bit(R5_OVERWRITE, &dev->flags) 2164 if (!test_bit(R5_OVERWRITE, &dev->flags)
2225 && i != pd_idx && i != qd_idx 2165 && i != pd_idx && i != qd_idx
2226 && (!test_bit(R5_LOCKED, &dev->flags) 2166 && (!test_bit(R5_LOCKED, &dev->flags)
2227#if 0
2228 || sh->bh_page[i] != bh->b_page
2229#endif
2230 ) && 2167 ) &&
2231 !test_bit(R5_UPTODATE, &dev->flags)) { 2168 !test_bit(R5_UPTODATE, &dev->flags)) {
2232 if (test_bit(R5_Insync, &dev->flags)) rcw++; 2169 if (test_bit(R5_Insync, &dev->flags)) rcw++;
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-21 02:40:27 -0500