Thanks for the fix Enrico. I'm still wondering on what platform you got this error ? Looks good. Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx> On 04/24/2019 03:35 AM, Enrico Weigelt, metux IT consult wrote: > Build breaks: > > drivers/nvme/target/core.c: In function 'nvmet_req_alloc_sgl': > drivers/nvme/target/core.c:939:12: error: implicit declaration of \ > function 'sgl_alloc'; did you mean 'bio_alloc'? \ > [-Werror=implicit-function-declaration] > req->sg = sgl_alloc(req->transfer_len, GFP_KERNEL, &req->sg_cnt); > ^~~~~~~~~ > bio_alloc > drivers/nvme/target/core.c:939:10: warning: assignment makes pointer \ > from integer without a cast [-Wint-conversion] > req->sg = sgl_alloc(req->transfer_len, GFP_KERNEL, &req->sg_cnt); > ^ > drivers/nvme/target/core.c: In function 'nvmet_req_free_sgl': > drivers/nvme/target/core.c:952:3: error: implicit declaration of \ > function 'sgl_free'; did you mean 'ida_free'? [-Werror=implicit-function-declaration] > sgl_free(req->sg); > ^~~~~~~~ > ida_free > > Cause: > > 1. missing include to <linux/scatterlist.h> > 2. SGL_ALLOC needs to be enabled > > Therefore adding the missing include, as well as Kconfig dependency. > > Signed-off-by: Enrico Weigelt, metux IT consult <info@xxxxxxxxx> > --- > drivers/nvme/target/Kconfig | 1 + > drivers/nvme/target/core.c | 1 + > 2 files changed, 2 insertions(+) > > diff --git a/drivers/nvme/target/Kconfig b/drivers/nvme/target/Kconfig > index d94f25c..3ef0a4e 100644 > --- a/drivers/nvme/target/Kconfig > +++ b/drivers/nvme/target/Kconfig > @@ -3,6 +3,7 @@ config NVME_TARGET > tristate "NVMe Target support" > depends on BLOCK > depends on CONFIGFS_FS > + select SGL_ALLOC > help > This enabled target side support for the NVMe protocol, that is > it allows the Linux kernel to implement NVMe subsystems and > diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c > index b3e765a..08851f5 100644 > --- a/drivers/nvme/target/core.c > +++ b/drivers/nvme/target/core.c > @@ -8,6 +8,7 @@ > #include <linux/random.h> > #include <linux/rculist.h> > #include <linux/pci-p2pdma.h> > +#include <linux/scatterlist.h> > > #include "nvmet.h" > >