search for: mempool_t

...k/virtio_blk.c b/drivers/block/virtio_blk.c index c4a60ba..338da9a 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -29,9 +29,6 @@ struct virtio_blk /* The disk structure for the kernel. */ struct gendisk *disk; - /* Request tracking. */ - struct list_head reqs; - mempool_t *pool; /* Process context for config space updates */ @@ -55,7 +52,6 @@ struct virtio_blk struct virtblk_req { - struct list_head list; struct request *req; struct virtio_blk_outhdr out_hdr; struct virtio_scsi_inhdr in_hdr; @@ -99,7 +95,6 @@ static void blk_done(struct virtqueue *vq)...

...k/virtio_blk.c b/drivers/block/virtio_blk.c index c4a60ba..338da9a 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -29,9 +29,6 @@ struct virtio_blk /* The disk structure for the kernel. */ struct gendisk *disk; - /* Request tracking. */ - struct list_head reqs; - mempool_t *pool; /* Process context for config space updates */ @@ -55,7 +52,6 @@ struct virtio_blk struct virtblk_req { - struct list_head list; struct request *req; struct virtio_blk_outhdr out_hdr; struct virtio_scsi_inhdr in_hdr; @@ -99,7 +95,6 @@ static void blk_done(struct virtqueue *vq)...

...many arguments to function 'mempool_resize' err = mempool_resize(bufs, target, GFP_KERNEL); ^ In file included from /var/lib/dkms/blktap/2.0.93/build/request.c:23:0: /usr/src/linux-headers-4.2.0-1-common/include/linux/mempool.h:32:12: note: declared here extern int mempool_resize(mempool_t *pool, int new_min_nr); ^ /usr/src/linux-headers-4.2.0-1-common/scripts/Makefile.build:263: recipe for target '/var/lib/dkms/blktap/2.0.93/build/request.o' failed make[3]: *** [/var/lib/dkms/blktap/2.0.93/build/request.o] Error 1 /usr/src/linux-headers-4.2.0-1-common/Makefile:14...

In response to Avi's excellent analysis, I've updated virtio as promised (apologies for the delay, travel got in the way). === This attempts to implement a "virtual I/O" layer which should allow common drivers to be efficiently used across most virtual I/O mechanisms. It will no-doubt need further enhancement. The details of probing the device are left to hypervisor-specific

In response to Avi's excellent analysis, I've updated virtio as promised (apologies for the delay, travel got in the way). === This attempts to implement a "virtual I/O" layer which should allow common drivers to be efficiently used across most virtual I/O mechanisms. It will no-doubt need further enhancement. The details of probing the device are left to hypervisor-specific

Hi again all, It turns out that networking really wants ordered requests, which the previous patches didn't allow. This patch changes it to a callback mechanism; kudos to Avi. The downside is that locking is more complicated, and after a few dead ends I implemented the simplest solution: the struct virtio_device contains the spinlock to use, and it's held when your callbacks get

Hi again all, It turns out that networking really wants ordered requests, which the previous patches didn't allow. This patch changes it to a callback mechanism; kudos to Avi. The downside is that locking is more complicated, and after a few dead ends I implemented the simplest solution: the struct virtio_device contains the spinlock to use, and it's held when your callbacks get

Hi again all, It turns out that networking really wants ordered requests, which the previous patches didn't allow. This patch changes it to a callback mechanism; kudos to Avi. The downside is that locking is more complicated, and after a few dead ends I implemented the simplest solution: the struct virtio_device contains the spinlock to use, and it's held when your callbacks get

...00644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -6,7 +6,6 @@ #include <linux/virtio_blk.h> #include <linux/scatterlist.h> -#define VIRTIO_MAX_SG (3+MAX_PHYS_SEGMENTS) #define PART_BITS 4 static int major, index; @@ -26,8 +25,11 @@ struct virtio_blk mempool_t *pool; + /* What host tells us, plus 2 for header & tailer. */ + unsigned int sg_elems; + /* Scatterlist: can be too big for stack. */ - struct scatterlist sg[VIRTIO_MAX_SG]; + struct scatterlist sg[/*sg_elems*/]; }; struct virtblk_req @@ -97,8 +99,6 @@ static bool do_req(struct request...

...00644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -6,7 +6,6 @@ #include <linux/virtio_blk.h> #include <linux/scatterlist.h> -#define VIRTIO_MAX_SG (3+MAX_PHYS_SEGMENTS) #define PART_BITS 4 static int major, index; @@ -26,8 +25,11 @@ struct virtio_blk mempool_t *pool; + /* What host tells us, plus 2 for header & tailer. */ + unsigned int sg_elems; + /* Scatterlist: can be too big for stack. */ - struct scatterlist sg[VIRTIO_MAX_SG]; + struct scatterlist sg[/*sg_elems*/]; }; struct virtblk_req @@ -97,8 +99,6 @@ static bool do_req(struct request...

Hi all - Here''s my current error handling patchset, against 3.1-rc8. Almost all of this patchset is preparing for actual error handling. Before we start in on that work, I''m trying to reduce the surface we need to worry about. It turns out that there is a ton of code that returns an error code but never actually reports an error. The patchset has grown to 65 patches. 46 of them

Hi Michael, hi Jason, This patches applies a few cleanups to the virtio PCI interrupt handling code, and then converts the virtio PCI code to use the automatic MSI-X vectors spreading, as well as using the information in virtio-blk and virtio-scsi to automatically align the blk-mq queues to the MSI-X vectors. Changes since V2: - remove a redundant callback check - calculate ->msix_vectors

Hi Michael, hi Jason, This patches applies a few cleanups to the virtio PCI interrupt handling code, and then converts the virtio PCI code to use the automatic MSI-X vectors spreading, as well as using the information in virtio-blk and virtio-scsi to automatically align the blk-mq queues to the MSI-X vectors. Changes since V2: - remove a redundant callback check - calculate ->msix_vectors

Hi Michael, hi Jason, This patches applies a few cleanups to the virtio PCI interrupt handling code, and then converts the virtio PCI code to use the automatic MSI-X vectors spreading, as well as using the information in virtio-blk and virtio-scsi to automatically align the blk-mq queues to the MSI-X vectors. Changes since V1: - dropped the patches already merged for 4.10-rc - new patch to

Hi Michael, hi Jason, This patches applies a few cleanups to the virtio PCI interrupt handling code, and then converts the virtio PCI code to use the automatic MSI-X vectors spreading, as well as using the information in virtio-blk and virtio-scsi to automatically align the blk-mq queues to the MSI-X vectors. Changes since V1: - dropped the patches already merged for 4.10-rc - new patch to

...V_MIN_RQ 4 #define BLKDEV_MAX_RQ 128 /* Default maximum */ struct request; typedef void (rq_end_io_fn)(struct request *, int); -struct request_list { - /* - * count[], starved[], and wait[] are indexed by - * BLK_RW_SYNC/BLK_RW_ASYNC - */ - int count[2]; - int starved[2]; - int elvpriv; - mempool_t *rq_pool; - wait_queue_head_t wait[2]; -}; - /* * request command types */ enum rq_cmd_type_bits { REQ_TYPE_FS = 1, /* fs request */ REQ_TYPE_BLOCK_PC, /* scsi command */ REQ_TYPE_SENSE, /* sense request */ REQ_TYPE_PM_SUSPEND, /* suspend request */ REQ_TYPE_PM_RESUME, /* resu...

...V_MIN_RQ 4 #define BLKDEV_MAX_RQ 128 /* Default maximum */ struct request; typedef void (rq_end_io_fn)(struct request *, int); -struct request_list { - /* - * count[], starved[], and wait[] are indexed by - * BLK_RW_SYNC/BLK_RW_ASYNC - */ - int count[2]; - int starved[2]; - int elvpriv; - mempool_t *rq_pool; - wait_queue_head_t wait[2]; -}; - /* * request command types */ enum rq_cmd_type_bits { REQ_TYPE_FS = 1, /* fs request */ REQ_TYPE_BLOCK_PC, /* scsi command */ REQ_TYPE_SENSE, /* sense request */ REQ_TYPE_PM_SUSPEND, /* suspend request */ REQ_TYPE_PM_RESUME, /* resu...

Hi all, These are the patches I'm planning to submit for 2.6.24. Comments gratefully accepted. Along with the usual cleanups and improvements are Jes' de-i386-ification patches, and a new "virtio" mechanism designed to be shared with KVM (and hopefully other hypervisors). Cheers, Rusty. Documentation/lguest/Makefile | 30 Documentation/lguest/lguest.c

Hi all, These are the patches I'm planning to submit for 2.6.24. Comments gratefully accepted. Along with the usual cleanups and improvements are Jes' de-i386-ification patches, and a new "virtio" mechanism designed to be shared with KVM (and hopefully other hypervisors). Cheers, Rusty. Documentation/lguest/Makefile | 30 Documentation/lguest/lguest.c