Re: [PATCH v11 15/26] block: reexport bio_map_kern

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sat, Mar 28, 2020 at 09:16:55AM -0700, Bart Van Assche wrote:
> There are more users in the Linux kernel of bio_add_pc_page() than only
> bio_map_kern(), e.g. the SCSI target pass-through code
> (drivers/target/target_core_pscsi.c). The code that uses bio_map_kern()
> is in patch 22/26: "block/rnbd: server: functionality for IO submission
> to file or block dev". Isn't that use case similar to the SCSI
> pass-through code? I think the RNBD server code also implements storage
> target functionality.

No, it is not at all.  The RNBD case submits normal read/write bios, for
which bio_map_kerl is the wrong interfac given that it
uses bio_add_pc_page.  Read, write and other non-passthrough requests
must use bio_add_page instead.



[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux