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From: Vivek Goyal <vgoyal@redhat.com>
To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	kvm@vger.kernel.org, linux-nvdimm@lists.01.org
Cc: vgoyal@redhat.com, miklos@szeredi.hu, stefanha@redhat.com,
	dgilbert@redhat.com, swhiteho@redhat.com
Subject: [PATCH v2 30/30] virtio-fs: Do not provide abort interface in fusectl
Date: Wed, 15 May 2019 15:27:15 -0400
Message-ID: <20190515192715.18000-31-vgoyal@redhat.com> (raw)
In-Reply-To: <20190515192715.18000-1-vgoyal@redhat.com>

virtio-fs does not support aborting requests which are being processed. That
is requests which have been sent to fuse daemon on host.

So do not provide "abort" interface for virtio-fs in fusectl.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
---
 fs/fuse/control.c   | 4 ++--
 fs/fuse/fuse_i.h    | 4 ++++
 fs/fuse/inode.c     | 1 +
 fs/fuse/virtio_fs.c | 1 +
 4 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/fs/fuse/control.c b/fs/fuse/control.c
index fe80bea4ad89..c1423f2ebc5e 100644
--- a/fs/fuse/control.c
+++ b/fs/fuse/control.c
@@ -278,8 +278,8 @@ int fuse_ctl_add_conn(struct fuse_conn *fc)
 
 	if (!fuse_ctl_add_dentry(parent, fc, "waiting", S_IFREG | 0400, 1,
 				 NULL, &fuse_ctl_waiting_ops) ||
-	    !fuse_ctl_add_dentry(parent, fc, "abort", S_IFREG | 0200, 1,
-				 NULL, &fuse_ctl_abort_ops) ||
+	    (!fc->no_abort && !fuse_ctl_add_dentry(parent, fc, "abort",
+			S_IFREG | 0200, 1, NULL, &fuse_ctl_abort_ops)) ||
 	    !fuse_ctl_add_dentry(parent, fc, "max_background", S_IFREG | 0600,
 				 1, NULL, &fuse_conn_max_background_ops) ||
 	    !fuse_ctl_add_dentry(parent, fc, "congestion_threshold",
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index b4a5728444bb..7ac7f9a0b81b 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -86,6 +86,7 @@ struct fuse_mount_data {
 	unsigned allow_other:1;
 	unsigned dax:1;
 	unsigned destroy:1;
+	unsigned no_abort:1;
 	unsigned max_read;
 	unsigned blksize;
 
@@ -847,6 +848,9 @@ struct fuse_conn {
 	/** Does the filesystem support copy_file_range? */
 	unsigned no_copy_file_range:1;
 
+	/** Do not create abort file in fuse control fs */
+	unsigned no_abort:1;
+
 	/** The number of requests waiting for completion */
 	atomic_t num_waiting;
 
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 8af7f31c6e19..302f7e04b645 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -1272,6 +1272,7 @@ int fuse_fill_super_common(struct super_block *sb,
 	fc->user_id = mount_data->user_id;
 	fc->group_id = mount_data->group_id;
 	fc->max_read = max_t(unsigned, 4096, mount_data->max_read);
+	fc->no_abort = mount_data->no_abort;
 
 	/* Used by get_root_inode() */
 	sb->s_fs_info = fc;
diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c
index 76c46edcc8ac..18fc0dca0abc 100644
--- a/fs/fuse/virtio_fs.c
+++ b/fs/fuse/virtio_fs.c
@@ -1042,6 +1042,7 @@ static int virtio_fs_fill_super(struct super_block *sb, void *data,
 	d.fiq_priv = fs;
 	d.fudptr = (void **)&fs->vqs[VQ_REQUEST].fud;
 	d.destroy = true; /* Send destroy request on unmount */
+	d.no_abort = 1;
 	err = fuse_fill_super_common(sb, &d);
 	if (err < 0)
 		goto err_free_init_req;
-- 
2.20.1


      parent reply index

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-15 19:26 [PATCH v2 00/30] [RFC] virtio-fs: shared file system for virtual machines Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 01/30] fuse: delete dentry if timeout is zero Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 02/30] fuse: Clear setuid bit even in cache=never path Vivek Goyal
2019-05-20 14:41   ` Miklos Szeredi
2019-05-20 14:44     ` Miklos Szeredi
2019-05-20 20:25       ` Nikolaus Rath
2019-05-21 15:01     ` Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 03/30] fuse: Use default_file_splice_read for direct IO Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 04/30] fuse: export fuse_end_request() Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 05/30] fuse: export fuse_len_args() Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 06/30] fuse: Export fuse_send_init_request() Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 07/30] fuse: export fuse_get_unique() Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 08/30] fuse: extract fuse_fill_super_common() Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 09/30] fuse: add fuse_iqueue_ops callbacks Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 10/30] fuse: Separate fuse device allocation and installation in fuse_conn Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 11/30] virtio_fs: add skeleton virtio_fs.ko module Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 12/30] dax: remove block device dependencies Vivek Goyal
2019-05-16  0:21   ` Dan Williams
2019-05-16 10:07     ` Stefan Hajnoczi
2019-05-16 14:23     ` Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 13/30] dax: Pass dax_dev to dax_writeback_mapping_range() Vivek Goyal
2019-05-15 19:26 ` [PATCH v2 14/30] virtio: Add get_shm_region method Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 15/30] virtio: Implement get_shm_region for PCI transport Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 16/30] virtio: Implement get_shm_region for MMIO transport Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 17/30] fuse, dax: add fuse_conn->dax_dev field Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 18/30] virtio_fs, dax: Set up virtio_fs dax_device Vivek Goyal
2019-07-17 17:27   ` Halil Pasic
2019-07-18  9:04     ` Cornelia Huck
2019-07-18 11:20       ` Halil Pasic
2019-07-18 14:47         ` Cornelia Huck
2019-07-18 13:15     ` Vivek Goyal
2019-07-18 14:30       ` Dan Williams
2019-07-22 10:51         ` Christian Borntraeger
2019-07-22 10:56           ` Dr. David Alan Gilbert
2019-07-22 11:20             ` Christian Borntraeger
2019-07-22 11:43               ` Cornelia Huck
2019-07-22 12:00                 ` Christian Borntraeger
2019-07-22 12:08                   ` David Hildenbrand
2019-07-29 13:20                     ` Stefan Hajnoczi
2019-05-15 19:27 ` [PATCH v2 19/30] fuse: Keep a list of free dax memory ranges Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 20/30] fuse: Introduce setupmapping/removemapping commands Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 21/30] fuse, dax: Implement dax read/write operations Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 22/30] fuse, dax: add DAX mmap support Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 23/30] fuse: Define dax address space operations Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 24/30] fuse, dax: Take ->i_mmap_sem lock during dax page fault Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 25/30] fuse: Maintain a list of busy elements Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 26/30] fuse: Add logic to free up a memory range Vivek Goyal
     [not found]   ` <CAN+Pk99SNKSf+GjSQUUWt_eu1fSjTy_ByUOEQUXHi8zNqXY1zA@mail.gmail.com>
2019-05-20 12:53     ` Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 27/30] fuse: Release file in process context Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 28/30] fuse: Reschedule dax free work if too many EAGAIN attempts Vivek Goyal
2019-05-15 19:27 ` [PATCH v2 29/30] fuse: Take inode lock for dax inode truncation Vivek Goyal
2019-05-15 19:27 ` Vivek Goyal [this message]

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