[PATCH] virtio-blk: select CONFIG_SG_POOL

Arnd Bergmann
2021-10-27T08:24:41Z

From: Arnd Bergmann <arnd@arndb.de>

Switching virtio-blk to the sg_pool interfaces causes a build
failures when they are not part of the kernel:

drivers/block/virtio_blk.c:182:3: error: implicit declaration of function 'sg_free_table_chained' [-Werror,-Wimplicit-function-declaration]
sg_free_table_chained(&vbr->sg_table,
^
drivers/block/virtio_blk.c:195:8: error: implicit declaration of function 'sg_alloc_table_chained' [-Werror,-Wimplicit-function-declaration]
err = sg_alloc_table_chained(&vbr->sg_table,
^

Select this symbol through Kconfig, as is done for all other
users.

Fixes: b2c5221fd074 ("virtio-blk: avoid preallocating big SGL for data")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/block/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index d97eaf6adb6d..2a51dfb09c8f 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -371,6 +371,7 @@ config XEN_BLKDEV_BACKEND
config VIRTIO_BLK
tristate "Virtio block driver"
depends on VIRTIO
+ select SG_POOL
help
This is the virtual block driver for virtio. It can be used with
QEMU based VMMs (like KVM or Xen). Say Y or M.
--
2.29.2