2 Jan
2004
2 Jan
'04
10:09
On Fri, Jan 02 2004, Arjan van de Ven wrote:
On Fri, 2004-01-02 at 02:30, Peter Osterlund wrote:
The packet writing code has the restriction that a bio must not span a packet boundary. (A packet is 32*2048 bytes.) If the page when mapped to disk starts 2kb before a packet boundary, merge_bvec_fn therefore returns 2048, which is less than len, which is 4096 if the whole page is mapped, so the bio_add_page() call fails.
devicemapper has similar restrictions for raid0 format; in that case it's device-mappers job to split the page/bio. Just as it is UDF's task to do the same I suspect...
It has nothing to do with UDF, it's a driver problem (API breakage). -- Jens Axboe