search for: kill_sb

virtio_fs_free_devs() is now called from ->kill_sb(). By this time all device queues have been quiesced. I am assuming that while ->kill_sb() is in progress, another mount instance will wait for it to finish (sb->s_umount mutex provides mutual exclusion). W.r.t ->remove path, we should be fine as we are not touching vdev or virtqueues. An...

....d_dname = simple_dname, }; return mount_pseudo(fs_type, "aio:", NULL, &ops, AIO_RING_MAGIC); } and static struct file_system_type aio_fs = { .name = "aio", .mount = aio_mount, .kill_sb = kill_anon_super, }; aio_mnt = kern_mount(&aio_fs); All of 12 lines. Your export is not much shorter. To quote old mail on the same topic: > Note that anon_inodes.c reason to exist was "it's for situations where > all context lives on struct file and w...

....d_dname = simple_dname, }; return mount_pseudo(fs_type, "aio:", NULL, &ops, AIO_RING_MAGIC); } and static struct file_system_type aio_fs = { .name = "aio", .mount = aio_mount, .kill_sb = kill_anon_super, }; aio_mnt = kern_mount(&aio_fs); All of 12 lines. Your export is not much shorter. To quote old mail on the same topic: > Note that anon_inodes.c reason to exist was "it's for situations where > all context lives on struct file and w...

In commit ea455f8ab68338ba69f5d3362b342c115bea8e13, we move the dentry lock put process into ocfs2_wq. This is OK for most case, but as for umount, it lead to at least 2 bugs. See http://oss.oracle.com/bugzilla/show_bug.cgi?id=1133 and http://oss.oracle.com/bugzilla/show_bug.cgi?id=1135. And it happens easily if we have opened a lot of inodes. For 1135, the reason is that during umount will call

...in_all_queues_locked(struct virtio_fs *fs) { struct virtio_fs_vq *fsvq; int i; @@ -141,6 +145,19 @@ static void virtio_fs_drain_all_queues(struct virtio_fs *fs) } } +static void virtio_fs_drain_all_queues(struct virtio_fs *fs) +{ + /* Provides mutual exclusion between ->remove and ->kill_sb + * paths. We don't want both of these draining queue at the + * same time. Current completion logic reinits completion + * and that means there should not be any other thread + * doing reinit or waiting for completion already. + */ + mutex_lock(&virtio_fs_mutex); + virtio_fs_drain_all...

...s will eventually cause umount to livelock(umount has to flush ocfs2_wq which will wait until orphan scan to finish). So this patch just try to finish the orphan scan quickly. In general when umount starts, we will set a flag(Jan has added one named OCFS2_OSB_DROP_DENTRY_LOCK_IMMED which is set in kill_sb, I renamed it to OCFS2_OSB_UMOUNT_START so that we all can use it), and when ocfs2_evict_inode finds this flag, it will skip the process of ocfs2_delete_inode if the file is from orphan dir. We are safe to skip the delete process since it is in orphan dir, so it will be deleted eventually by other...

Hi Al, Here's a set of patches that: (1) Provides a convenience member in struct fs_context that is OR'd into sb->s_iflags by sget_fc(). (2) Provides a convenience vfs_init_pseudo_fs_context() helper function for doing most of the work in mounting a pseudo filesystem. (3) Converts all the trivial filesystems that have no arguments to fs_context. (4) Converts

Hi, Michael Tsirkin pointed out issues w.r.t various locking related TODO items and races w.r.t device removal. In this first round of cleanups, I have taken care of most pressing issues. These patches apply on top of following. git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git#virtiofs-v4 I have tested these patches with mount/umount and device removal using qemu monitor. For

Hi Al, Here's a set of patches that converts a bunch (but not yet all!) to the new mount API. To this end, it makes the following changes: (1) Provides a convenience member in struct fs_context that is OR'd into sb->s_iflags by sget_fc(). (2) Provides a convenience helper function, vfs_init_pseudo_fs_context(), for doing most of the work in mounting a pseudo filesystem.

Hi Miklos, Here are few small cleanups for virtiofs for 5.5. I had received some comments from Michael Tsirkin on original virtiofs patches and these cleanups are result of these comments. Thanks Vivek Vivek Goyal (3): virtiofs: Use a common function to send forget virtiofs: Do not send forget request "struct list_head" element virtiofs: Use completions while waiting for queue

...truct dentry_operations ops = { + .d_dname = simple_dname, + }; + + return mount_pseudo(fs_type, "balloon-kvm:", NULL, &ops, + BALLOON_KVM_MAGIC); +} + +static struct file_system_type balloon_fs = { + .name = "balloon-kvm", + .mount = balloon_mount, + .kill_sb = kill_anon_super, +}; + #endif /* CONFIG_BALLOON_COMPACTION */ static int virtballoon_probe(struct virtio_device *vdev) @@ -515,9 +538,6 @@ static int virtballoon_probe(struct virtio_device *vdev) vb->vdev = vdev; balloon_devinfo_init(&vb->vb_dev_info); -#ifdef CONFIG_BA...

...truct dentry_operations ops = { + .d_dname = simple_dname, + }; + + return mount_pseudo(fs_type, "balloon-kvm:", NULL, &ops, + BALLOON_KVM_MAGIC); +} + +static struct file_system_type balloon_fs = { + .name = "balloon-kvm", + .mount = balloon_mount, + .kill_sb = kill_anon_super, +}; + #endif /* CONFIG_BALLOON_COMPACTION */ static int virtballoon_probe(struct virtio_device *vdev) @@ -519,9 +542,6 @@ static int virtballoon_probe(struct virtio_device *vdev) vb->vdev = vdev; balloon_devinfo_init(&vb->vb_dev_info); -#ifdef CONFIG_BA...

...truct dentry_operations ops = { + .d_dname = simple_dname, + }; + + return mount_pseudo(fs_type, "balloon-kvm:", NULL, &ops, + BALLOON_KVM_MAGIC); +} + +static struct file_system_type balloon_fs = { + .name = "balloon-kvm", + .mount = balloon_mount, + .kill_sb = kill_anon_super, +}; + #endif /* CONFIG_BALLOON_COMPACTION */ static int virtballoon_probe(struct virtio_device *vdev) @@ -515,10 +539,6 @@ static int virtballoon_probe(struct virtio_device *vdev) vb->vdev = vdev; balloon_devinfo_init(&vb->vb_dev_info); -#ifdef CONFIG_B...

...truct dentry_operations ops = { + .d_dname = simple_dname, + }; + + return mount_pseudo(fs_type, "balloon-kvm:", NULL, &ops, + BALLOON_KVM_MAGIC); +} + +static struct file_system_type balloon_fs = { + .name = "balloon-kvm", + .mount = balloon_mount, + .kill_sb = kill_anon_super, +}; + #endif /* CONFIG_BALLOON_COMPACTION */ static int virtballoon_probe(struct virtio_device *vdev) @@ -516,12 +540,25 @@ static int virtballoon_probe(struct virtio_device *vdev) balloon_devinfo_init(&vb->vb_dev_info); #ifdef CONFIG_BALLOON_COMPACTION + b...

...apping->backing_dev_info = &balloonfs_backing_dev_info; + return root; +} + +/* The single mounted skeleton filesystem */ +static struct vfsmount *balloon_mnt __read_mostly; + +static struct file_system_type balloon_fs_type = { + .name = "balloonfs", + .mount = balloonfs_mount, + .kill_sb = kill_anon_super, +}; + +/* Acknowledges a message from the specified virtqueue. */ +static void balloon_ack(struct virtqueue *vq) +{ + struct virtio_balloon *vb; + unsigned int len; + + vb = virtqueue_get_buf(vq, &len); + if (vb) + complete(&vb->acked); +} + +/* + * Scans the page_tre...

...apping->backing_dev_info = &balloonfs_backing_dev_info; + return root; +} + +/* The single mounted skeleton filesystem */ +static struct vfsmount *balloon_mnt __read_mostly; + +static struct file_system_type balloon_fs_type = { + .name = "balloonfs", + .mount = balloonfs_mount, + .kill_sb = kill_anon_super, +}; + +/* Acknowledges a message from the specified virtqueue. */ +static void balloon_ack(struct virtqueue *vq) +{ + struct virtio_balloon *vb; + unsigned int len; + + vb = virtqueue_get_buf(vq, &len); + if (vb) + complete(&vb->acked); +} + +/* + * Scans the page_tre...

So both Liu and I made huge messes of find_lock_delalloc_range trying to fix stuff, me first by fixing extent size, then him by fixing something I broke and then me again telling him to fix it a different way. So this is obviously a candidate for some testing. This patch adds a pseudo fs so we can allocate fake inodes for tests that need an inode or pages. Then it addes a bunch of tests to make

Hi Minchan, [auto build test ERROR on next-20160318] [cannot apply to v4.5-rc7 v4.5-rc6 v4.5-rc5 v4.5] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Minchan-Kim/Support-non-lru-page-migration/20160321-143339 config: x86_64-randconfig-x000-201612 (attached as .config) reproduce: # save

Hi Minchan, [auto build test ERROR on next-20160318] [cannot apply to v4.5-rc7 v4.5-rc6 v4.5-rc5 v4.5] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Minchan-Kim/Support-non-lru-page-migration/20160321-143339 config: x86_64-randconfig-x000-201612 (attached as .config) reproduce: # save

...eton filesystem */ > >> +static struct vfsmount *balloon_mnt __read_mostly; > >> + > >> +static struct file_system_type balloon_fs_type = { > >> + .name = "balloonfs", > >> + .mount = balloonfs_mount, > >> + .kill_sb = kill_anon_super, > >> +}; > >> + > >> +/* Acknowledges a message from the specified virtqueue. */ > >> +static void balloon_ack(struct virtqueue *vq) > >> +{ > >> + struct virtio_balloon *vb; > >> + unsigned int len; >...