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btrfs: use copy_page for copying pages instead of memcpy
Use the helper that's possibly optimized for full page copies. Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
parent
3ffbd68c48
commit
69d2480456
2 changed files with 7 additions and 9 deletions
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@ -547,7 +547,7 @@ static int io_ctl_add_bitmap(struct btrfs_io_ctl *io_ctl, void *bitmap)
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io_ctl_map_page(io_ctl, 0);
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}
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memcpy(io_ctl->cur, bitmap, PAGE_SIZE);
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copy_page(io_ctl->cur, bitmap);
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io_ctl_set_crc(io_ctl, io_ctl->index - 1);
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if (io_ctl->index < io_ctl->num_pages)
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io_ctl_map_page(io_ctl, 0);
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@ -607,7 +607,7 @@ static int io_ctl_read_bitmap(struct btrfs_io_ctl *io_ctl,
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if (ret)
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return ret;
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memcpy(entry->bitmap, io_ctl->cur, PAGE_SIZE);
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copy_page(entry->bitmap, io_ctl->cur);
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io_ctl_unmap_page(io_ctl);
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return 0;
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@ -260,7 +260,7 @@ static void cache_rbio_pages(struct btrfs_raid_bio *rbio)
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s = kmap(rbio->bio_pages[i]);
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d = kmap(rbio->stripe_pages[i]);
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memcpy(d, s, PAGE_SIZE);
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copy_page(d, s);
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kunmap(rbio->bio_pages[i]);
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kunmap(rbio->stripe_pages[i]);
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@ -1275,7 +1275,7 @@ static noinline void finish_rmw(struct btrfs_raid_bio *rbio)
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pointers);
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} else {
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/* raid5 */
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memcpy(pointers[nr_data], pointers[0], PAGE_SIZE);
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copy_page(pointers[nr_data], pointers[0]);
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run_xor(pointers + 1, nr_data - 1, PAGE_SIZE);
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}
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@ -1941,9 +1941,7 @@ static void __raid_recover_end_io(struct btrfs_raid_bio *rbio)
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BUG_ON(failb != -1);
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pstripe:
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/* Copy parity block into failed block to start with */
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memcpy(pointers[faila],
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pointers[rbio->nr_data],
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PAGE_SIZE);
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copy_page(pointers[faila], pointers[rbio->nr_data]);
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/* rearrange the pointer array */
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p = pointers[faila];
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@ -2448,7 +2446,7 @@ static noinline void finish_parity_scrub(struct btrfs_raid_bio *rbio,
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pointers);
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} else {
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/* raid5 */
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memcpy(pointers[nr_data], pointers[0], PAGE_SIZE);
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copy_page(pointers[nr_data], pointers[0]);
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run_xor(pointers + 1, nr_data - 1, PAGE_SIZE);
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}
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@ -2456,7 +2454,7 @@ static noinline void finish_parity_scrub(struct btrfs_raid_bio *rbio,
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p = rbio_stripe_page(rbio, rbio->scrubp, pagenr);
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parity = kmap(p);
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if (memcmp(parity, pointers[rbio->scrubp], PAGE_SIZE))
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memcpy(parity, pointers[rbio->scrubp], PAGE_SIZE);
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copy_page(parity, pointers[rbio->scrubp]);
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else
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/* Parity is right, needn't writeback */
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bitmap_clear(rbio->dbitmap, pagenr, 1);
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