+}; + unsigned num_in; + schedule_work(&fsvq->done_work); + total_sgs += req->num_pages; +{ View Vivek Goyal’s profile on LinkedIn, the world's largest professional community. … + } + + struct fuse_pqueue *fpq; + if (ret < 0) { + Vivek Goyal works as a kernel developer at RedHat in Westford, MA, USA. + vq_callback_t **callbacks; + .wake_pending_and_unlock = virtio_fs_wake_pending_and_unlock, + if (req->out.argpages) - unsigned int num_queues; + struct virtio_fs_vq *vqs; + req->argbuf = NULL; +, @@ -148,6 +381,7 @@ static void virtio_fs_remove(struct virtio_device *vdev), @@ -190,6 +424,234 @@ static struct virtio_driver virtio_fs_driver = {, +static void virtio_fs_wake_forget_and_unlock(struct fuse_iqueue *fiq) +} + } + return &fs->vqs[vq->index]; + if (len) + __func__); [PATCH 09/52] fuse: process requests queues, [PATCH 00/52] [RFC] virtio-fs: shared file system for virtual machines, [PATCH 01/52] fuse: add skeleton virtio_fs.ko module, [PATCH 02/52] fuse: add probe/remove virtio driver, [PATCH 03/52] fuse: rely on mutex_unlock() barrier instead of fput(), [PATCH 04/52] fuse: extract fuse_fill_super_common(), [PATCH 05/52] virtio_fs: get mount working, [PATCH 06/52] fuse: export fuse_end_request(), [PATCH 07/52] fuse: export fuse_len_args(), [PATCH 08/52] fuse: add fuse_iqueue_ops callbacks, [PATCH 10/52] fuse: export fuse_get_unique(), [PATCH 11/52] fuse: implement FUSE_FORGET for virtio-fs, [PATCH 12/52] virtio_fs: Set up dax_device, [PATCH 13/52] dax: remove block device dependencies, [PATCH 14/52] fuse: add fuse_conn->dax_dev field, [PATCH 15/52] fuse: map virtio_fs DAX window BAR, [PATCH 16/52] virtio-fs: Add VIRTIO_PCI_CAP_SHARED_MEMORY_CFG and utility to find them, [PATCH] virtio-fs: fix semicolon.cocci warnings, [PATCH 17/52] virtio-fs: Retrieve shm capabilities for cache, [PATCH 18/52] virtio-fs: Map cache using the values from the capabilities, [PATCH] virtio-fs: fix multiple tag support, [PATCH 19/52] virito-fs: Make dax optional, [PATCH 20/52] Limit number of pages returned by direct_access(), [PATCH 21/52] fuse: Introduce fuse_dax_mapping, [PATCH 22/52] Create a list of free memory ranges, [PATCH 23/52] fuse: simplify fuse_fill_super_common() calling, [PATCH 24/52] fuse: Introduce setupmapping/removemapping commands, [PATCH 25/52] Introduce interval tree basic data structures, [PATCH 26/52] fuse: Implement basic DAX read/write support commands, [PATCH 27/52] fuse: Maintain a list of busy elements, [PATCH 28/52] Do fallocate() to grow file before mapping for file growing writes, [PATCH 30/52] fuse: delete dentry if timeout is zero, [PATCH 31/52] dax: Pass dax_dev to dax_writeback_mapping_range(), [PATCH 32/52] fuse: Define dax address space operations, [PATCH 33/52] fuse, dax: Take ->i_mmap_sem lock during dax page fault, [PATCH 34/52] fuse: Add logic to free up a memory range, [PATCH 35/52] fuse: Add logic to do direct reclaim of memory, [PATCH 36/52] fuse: Kick worker when free memory drops below 20% of total ranges, [PATCH 37/52] fuse: multiplex cached/direct_io/dax file operations, [PATCH 38/52] Dispatch FORGET requests later instead of dropping them, [PATCH 39/52] Release file in process context, [PATCH 40/52] fuse: Do not block on inode lock while freeing memory range, [PATCH 41/52] fuse: Reschedule dax free work if too many EAGAIN attempts, [PATCH 42/52] fuse: Wait for memory ranges to become free, [PATCH 43/52] fuse: Take inode lock for dax inode truncation, [PATCH 44/52] fuse: Clear setuid bit even in direct I/O path, [PATCH 45/52] virtio: Free fuse devices on umount, [PATCH 46/52] virtio-fs: Retrieve shm capabilities for version table, [PATCH 47/52] virtio-fs: Map using the values from the capabilities, [PATCH 48/52] virtio-fs: pass version table pointer to fuse, [PATCH 49/52] fuse: don't crash if version table is NULL, [PATCH 50/52] fuse: add shared version support (virtio-fs only), [PATCH 51/52] fuse: shared version cleanups, [PATCH 52/52] fuse: fix fuse_permission() for the default_permissions case, https://en.wikipedia.org/wiki/Posting_style#Interleaved_style, https://kernel.org/pub/software/scm/git/docs/git-send-email.html, nntp://nntp.lore.kernel.org/org.kernel.vger.linux-kernel, https://public-inbox.org/public-inbox.git. + memcpy(req->out.args[i].value, req->argbuf + offset, argsize); + } + list_for_each_entry_safe(req, next, &reqs, list) { +__releases(fiq->waitq.lock) He is a member of kernel storage team and has worked in various areaslike Overlayfs SELinux support, docker storage, block cgroup controller, IOscheduler, kexec/kdump and secureboot.Vivek has presented... Miklos Szeredi is a Linux kernel hacker working for Red Hat. + if (!test_bit(FR_ISREPLY, &req->flags)) + From: Lei Wen; Re: [PATCH] display ST when using ps -l. From: Dave Anderson; Re: [PATCH] display ST when using ps -l. From: qiaonuohan; Re: How to use scripts in crash? + for (i = 0; i < fs->nvqs; i++) { + req->in.h.len, fuse_len_args(req->out.numargs, req->out.args)); + unsigned i; + */ +static void virtio_fs_hiprio_done(struct virtqueue *vq) + printk(KERN_ERR "%s: virtio_fs_enqueue_req failed %d\n", He is a member of kernel storage team and has worked in various areas like Overlayfs SELinux support, docker storage, block cgroup controller, IO scheduler, kexec/kdump and secureboot. +static void virtio_fs_vq_done(struct virtqueue *vq) + smp_mb__after_atomic(); + +{ IIT Delhi. View Vivek Goyal's full profile. + &req->out.h, sizeof(req->out.h)); Description of problem: docker-storage-setup causes docker to fail when auto-extend is set. +} ____cacheline_aligned_in_smp; + + total_sgs += 1; Idea is that this code runs after a crash and it runs in minimal environment. + spin_lock(&fpq->lock); + * virtqueue races since they haven't been set up yet! + unsigned i; Verified email at bu.edu - Homepage. Senior Developer. + callbacks[i] = virtio_fs_vq_done; +} + +static void virtio_fs_wake_pending_and_unlock(struct fuse_iqueue *fiq) +static unsigned sg_count_fuse_req(struct fuse_req *req) + for (i = 0; i < num_pages; i++) { +{ + fsvq->fud = fuse_dev_alloc(fc); + - err = -ENOMEM; + * requests need to be sent before we return. +{ Vivek Goyal works as a principal software engineer at Red Hat in Westford, MA,USA. + + spin_lock(&fpq->lock); + clear_bit(FR_SENT, &req->flags); + struct fuse_req *req; + err = fuse_fill_super_common(sb, &d, &virtio_fs_fiq_ops, fs, This name, concept and some code has been taken from kexec-tools. Kexec/Kdump and Secureboot - Vivek Goyal, Red Hat - YouTube - goto err_fud; +} 2020-2020. +, - struct list_head list; /* on virtio_fs_instances */, + struct list_head list; /* on virtio_fs_instances */. + +static void virtio_fs_notifications_done_work(struct work_struct *work) + list_del_init(&req->list); + struct work_struct done_work; + sg_init_table(&sg[i], 1); + page_descs[i].offset); + if (!sgs || !sg) { This name, concept and some code has been taken from kexec-tools. + fs->vqs = devm_kcalloc(&vdev->dev, fs->nvqs, sizeof(fs->vqs[0]), +{ + if (!fs->vqs) + return -ENOMEM; +, @@ -119,23 +343,32 @@ static int virtio_fs_probe(struct virtio_device *vdev). + unsigned i; +} + struct scatterlist *stack_sgs[6 /* requests need at least 4 elements */]; + + INIT_WORK(&fs->vqs[0].done_work, virtio_fs_notifications_done_work); Issues Created issues #50 … +{ + + struct page **pages, + fpq = vq_to_fpq(vq); +{ + GFP_KERNEL); + __func__, req->in.h.opcode, req->in.h.unique, req->in.h.nodeid, Timezone KVM Forum 2020. + dev_dbg(&vq->vdev->dev, "%s %s\n", __func__, fsvq->name); + + num_in = req->in.numargs - req->in.argpages; + return total_sgs; + if (!req->argbuf) + copy_args_from_argbuf(req); View Colleagues. + if (ret < 0 && req->argbuf) { + virtio_device_ready(vdev); + if (len_used) +/* Allocate and copy args into req->argbuf */ + unsigned nvqs; /* number of virtqueues */ + + + + offset += argsize; + ret = -ENOMEM; + return i; Vivek Goyal <> Subject [PATCH 11/15] purgatory: Core purgatory functionality: Date: Thu, 26 Jun 2014 16:33:40 -0400 : Create a stand alone relocatable object purgatory which runs between two kernels. + int ret; + + if (ret < 0) */ Idea is that this code runs after a crash and it runs in minimal environment. From: Vivek Goyal
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