search for: blk_stop_queue

...gt; + blkdev_dequeue_request(req); > + } > + > +sync: > + if (vblk) this check looks bogus, as vblk->pool has been accessed unconditionally above > + vblk->vq->ops->sync(vblk->vq); > + return; > + > +stop: > + /* Queue full? Wait. */ > + blk_stop_queue(q); > + mempool_free(vbr, vblk->pool); > + goto sync; > +}

...gt; + blkdev_dequeue_request(req); > + } > + > +sync: > + if (vblk) this check looks bogus, as vblk->pool has been accessed unconditionally above > + vblk->vq->ops->sync(vblk->vq); > + return; > + > +stop: > + /* Queue full? Wait. */ > + blk_stop_queue(q); > + mempool_free(vbr, vblk->pool); > + goto sync; > +}

This is a resend of a previously sent patch-set. This patch-set deals with some of the style isues in blkvsc_drv.c. We also get rid most of the "dead code" in this file: 1) Get rid of most of the forward declarations in this file. The only remaining forward declarations are to deal with circular dependencies. 2) Get rid of most of the dead code in the file. Some of the

This is a resend of a previously sent patch-set. This patch-set deals with some of the style isues in blkvsc_drv.c. We also get rid most of the "dead code" in this file: 1) Get rid of most of the forward declarations in this file. The only remaining forward declarations are to deal with circular dependencies. 2) Get rid of most of the dead code in the file. Some of the

This patch-set deals with some of the style isues in blkvsc_drv.c. We also get rid most of the "dead code" in this file: 1) Get rid of most of the forward declarations in this file. The only remaining forward declarations are to deal with circular dependencies. 2) Get rid of most of the dead code in the file. Some of the functions in this file are place holders - they

This patch-set deals with some of the style isues in blkvsc_drv.c. We also get rid most of the "dead code" in this file: 1) Get rid of most of the forward declarations in this file. The only remaining forward declarations are to deal with circular dependencies. 2) Get rid of most of the dead code in the file. Some of the functions in this file are place holders - they

...ND_DMA, bd->phys_addr, __pa(&ping), 0); +} + +static void do_lgb_request(request_queue_t *q) +{ + struct blockdev *bd; + struct request *req; + +again: + req = elv_next_request(q); + if (!req) + return; + + bd = req->rq_disk->private_data; + /* Sometimes we get repeated requests after blk_stop_queue. */ + if (bd->req) + return; + + if (!blk_fs_request(req)) { + pr_debug("Got non-command 0x%08x\n", req->cmd_type); + req->errors++; + end_entire_request(req, 0); + goto again; + } + + if (rq_data_dir(req) == WRITE) + do_write(bd, req); + else + do_read(bd, req); + + /* Wa...

...ND_DMA, bd->phys_addr, __pa(&ping), 0); +} + +static void do_lgb_request(request_queue_t *q) +{ + struct blockdev *bd; + struct request *req; + +again: + req = elv_next_request(q); + if (!req) + return; + + bd = req->rq_disk->private_data; + /* Sometimes we get repeated requests after blk_stop_queue. */ + if (bd->req) + return; + + if (!blk_fs_request(req)) { + pr_debug("Got non-command 0x%08x\n", req->cmd_type); + req->errors++; + end_entire_request(req, 0); + goto again; + } + + if (rq_data_dir(req) == WRITE) + do_write(bd, req); + else + do_read(bd, req); + + /* Wa...

...g I/O requests? If > not, we want to restore them when we unfreeze. For the blk code, I added blk_drain_queue() and related calls to the freeze handler, that was missed earlier. > 2) Does it stop more I/O from reaching do_virtblk_request during freeze? > If not, we need to. Added blk_stop_queue() and blk_start_queue() calls to ensure this. > If we need to save and restore requests, I don't think we should do this > on a per-driver basis, but try to do it in the core. Agreed, however currently we don't save and restore any pending vq items. If it is necessary, we should do...

...g I/O requests? If > not, we want to restore them when we unfreeze. For the blk code, I added blk_drain_queue() and related calls to the freeze handler, that was missed earlier. > 2) Does it stop more I/O from reaching do_virtblk_request during freeze? > If not, we need to. Added blk_stop_queue() and blk_start_queue() calls to ensure this. > If we need to save and restore requests, I don't think we should do this > on a per-driver basis, but try to do it in the core. Agreed, however currently we don't save and restore any pending vq items. If it is necessary, we should do...

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

...error: dereferencing pointer to incomplete type drivers/block/lguest_blk.c:248: error: dereferencing pointer to incomplete type drivers/block/lguest_blk.c:253: error: implicit declaration of function 'rq_data_dir' drivers/block/lguest_blk.c:260: error: implicit declaration of function 'blk_stop_queue' drivers/block/lguest_blk.c: In function 'lguestblk_probe': drivers/block/lguest_blk.c:304: error: implicit declaration of function 'register_blkdev' drivers/block/lguest_blk.c:313: error: implicit declaration of function 'alloc_disk' drivers/block/lguest_blk.c:313: warn...

...error: dereferencing pointer to incomplete type drivers/block/lguest_blk.c:248: error: dereferencing pointer to incomplete type drivers/block/lguest_blk.c:253: error: implicit declaration of function 'rq_data_dir' drivers/block/lguest_blk.c:260: error: implicit declaration of function 'blk_stop_queue' drivers/block/lguest_blk.c: In function 'lguestblk_probe': drivers/block/lguest_blk.c:304: error: implicit declaration of function 'register_blkdev' drivers/block/lguest_blk.c:313: error: implicit declaration of function 'alloc_disk' drivers/block/lguest_blk.c:313: warn...

More cleanup. In this patch-set we deal with the following issues: 1) While a Linux guest on Hyper-V can be assigned removable media devices (DVD, floppy etc), these devices are not handled by the Hyper-V block driver. So, we cleanup all the dead code dealing with removable media devices. 2) There were multiple functions to retrieve information about the device. Since much of

More cleanup. In this patch-set we deal with the following issues: 1) While a Linux guest on Hyper-V can be assigned removable media devices (DVD, floppy etc), these devices are not handled by the Hyper-V block driver. So, we cleanup all the dead code dealing with removable media devices. 2) There were multiple functions to retrieve information about the device. Since much of

Hi, These patches add support for S4 to virtio (pci) and all drivers. For each driver, all vqs are removed before hibernation, and then re-created after restore. Some driver-specific uninit and init work is also done in the freeze and restore functions. All the drivers in testing work fine: * virtio-blk is used for the only disk in the VM, IO works fine before and after. * virtio-console:

Hi, These patches add support for S4 to virtio (pci) and all drivers. For each driver, all vqs are removed before hibernation, and then re-created after restore. Some driver-specific uninit and init work is also done in the freeze and restore functions. All the drivers in testing work fine: * virtio-blk is used for the only disk in the VM, IO works fine before and after. * virtio-console:

The latest upstream merge changed struct block_device_operations: This merge got rid of blkvsc_media_changed and introduced the function blkvsc_check_events. This broke all the patches that were sent after the tree was closed the last time. This is a resend of this patch-set to account for this change in the kernel. More cleanup. In this patch-set we deal with the following issues: 1) While a

The latest upstream merge changed struct block_device_operations: This merge got rid of blkvsc_media_changed and introduced the function blkvsc_check_events. This broke all the patches that were sent after the tree was closed the last time. This is a resend of this patch-set to account for this change in the kernel. More cleanup. In this patch-set we deal with the following issues: 1) While a