}
EXPORT_SYMBOL_GPL(dio_end_io);
-static int
+static void
dio_bio_alloc(struct dio *dio, struct block_device *bdev,
sector_t first_sector, int nr_vecs)
{
struct bio *bio;
+ /*
+ * bio_alloc() is guaranteed to return a bio when called with
+ * __GFP_WAIT and we request a valid number of vectors.
+ */
bio = bio_alloc(GFP_KERNEL, nr_vecs);
bio->bi_bdev = bdev;
dio->bio = bio;
dio->logical_offset_in_bio = dio->cur_page_fs_offset;
- return 0;
}
/*
goto out;
sector = start_sector << (dio->blkbits - 9);
nr_pages = min(dio->pages_in_io, bio_get_nr_vecs(dio->map_bh.b_bdev));
+ nr_pages = min(nr_pages, BIO_MAX_PAGES);
BUG_ON(nr_pages <= 0);
- ret = dio_bio_alloc(dio, dio->map_bh.b_bdev, sector, nr_pages);
+ dio_bio_alloc(dio, dio->map_bh.b_bdev, sector, nr_pages);
dio->boundary = 0;
out:
return ret;
/*
* See whether this new request is contiguous with the old.
*
- * Btrfs cannot handl having logically non-contiguous requests
- * submitted. For exmple if you have
+ * Btrfs cannot handle having logically non-contiguous requests
+ * submitted. For example if you have
*
* Logical: [0-4095][HOLE][8192-12287]
- * Phyiscal: [0-4095] [4096-8181]
+ * Physical: [0-4095] [4096-8191]
*
* We cannot submit those pages together as one BIO. So if our
* current logical offset in the file does not equal what would