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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2010-02-26 00:20:39 -0500 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2010-02-26 13:58:08 +0100 |
| commit | 8a78362c4eefc1deddbefe2c7f38aabbc2429d6b (patch) | |
| tree | c095d95af1aec0f9cee5975b1dcdc6bc1d17d401 /fs | |
| parent | 086fa5ff0854c676ec333760f4c0154b3b242616 (diff) | |
| download | lwn-8a78362c4eefc1deddbefe2c7f38aabbc2429d6b.tar.gz lwn-8a78362c4eefc1deddbefe2c7f38aabbc2429d6b.zip | |
block: Consolidate phys_segment and hw_segment limits
Except for SCSI no device drivers distinguish between physical and
hardware segment limits. Consolidate the two into a single segment
limit.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/bio.c | 9 |
1 files changed, 3 insertions, 6 deletions
@@ -507,10 +507,8 @@ int bio_get_nr_vecs(struct block_device *bdev) int nr_pages; nr_pages = ((queue_max_sectors(q) << 9) + PAGE_SIZE - 1) >> PAGE_SHIFT; - if (nr_pages > queue_max_phys_segments(q)) - nr_pages = queue_max_phys_segments(q); - if (nr_pages > queue_max_hw_segments(q)) - nr_pages = queue_max_hw_segments(q); + if (nr_pages > queue_max_segments(q)) + nr_pages = queue_max_segments(q); return nr_pages; } @@ -575,8 +573,7 @@ static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page * make this too complex. */ - while (bio->bi_phys_segments >= queue_max_phys_segments(q) - || bio->bi_phys_segments >= queue_max_hw_segments(q)) { + while (bio->bi_phys_segments >= queue_max_segments(q)) { if (retried_segments) return 0; |