diff options
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index df0cba2..58286b1 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as @@ -1249,8 +1249,8 @@ bio_end_io_pagebuf( int error) { xfs_buf_t *pb = (xfs_buf_t *)bio->bi_private; - unsigned int i, blocksize = pb->pb_target->pbr_bsize; - struct bio_vec *bvec = bio->bi_io_vec; + unsigned int blocksize = pb->pb_target->pbr_bsize; + struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; if (bio->bi_size) return 1; @@ -1258,10 +1258,12 @@ bio_end_io_pagebuf( if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) pb->pb_error = EIO; - for (i = 0; i < bio->bi_vcnt; i++, bvec++) { + do { struct page *page = bvec->bv_page; - if (pb->pb_error) { + if (unlikely(pb->pb_error)) { + if (pb->pb_flags & PBF_READ) + ClearPageUptodate(page); SetPageError(page); } else if (blocksize == PAGE_CACHE_SIZE) { SetPageUptodate(page); @@ -1270,10 +1272,13 @@ bio_end_io_pagebuf( set_page_region(page, bvec->bv_offset, bvec->bv_len); } + if (--bvec >= bio->bi_io_vec) + prefetchw(&bvec->bv_page->flags); + if (_pagebuf_iolocked(pb)) { unlock_page(page); } - } + } while (bvec >= bio->bi_io_vec); _pagebuf_iodone(pb, 1); bio_put(bio); |
