David Howells
2019-Mar-14 16:08 UTC
[PATCH 00/38] VFS: Convert trivial filesystems and more
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 binderfs (which was trivial before January). (5) Converts ramfs, tmpfs, rootfs and devtmpfs. (6) Kills off mount_pseudo(), mount_pseudo_xattr(), mount_ns(), sget_userns(). The patches can be found here also: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git on branch: mount-api-viro David --- David Howells (38): vfs: Provide sb->s_iflags settings in fs_context struct vfs: Provide a mount_pseudo-replacement for fs_context vfs: Convert aio to fs_context vfs: Convert anon_inodes to fs_context vfs: Convert bdev to fs_context vfs: Convert nsfs to fs_context vfs: Convert pipe to fs_context vfs: Convert zsmalloc to fs_context vfs: Convert sockfs to fs_context vfs: Convert dax to fs_context vfs: Convert drm to fs_context vfs: Convert ia64 perfmon to fs_context vfs: Convert cxl to fs_context vfs: Convert ocxlflash to fs_context vfs: Convert virtio_balloon to fs_context vfs: Convert btrfs_test to fs_context vfs: Kill off mount_pseudo() and mount_pseudo_xattr() vfs: Use sget_fc() for pseudo-filesystems vfs: Convert binderfs to fs_context vfs: Convert nfsctl to fs_context vfs: Convert rpc_pipefs to fs_context vfs: Kill off mount_ns() vfs: Kill sget_userns() vfs: Convert binfmt_misc to fs_context vfs: Convert configfs to fs_context vfs: Convert efivarfs to fs_context vfs: Convert fusectl to fs_context vfs: Convert qib_fs/ipathfs to fs_context vfs: Convert ibmasmfs to fs_context vfs: Convert oprofilefs to fs_context vfs: Convert gadgetfs to fs_context vfs: Convert xenfs to fs_context vfs: Convert openpromfs to fs_context vfs: Convert apparmorfs to fs_context vfs: Convert securityfs to fs_context vfs: Convert selinuxfs to fs_context vfs: Convert smackfs to fs_context tmpfs, devtmpfs, ramfs, rootfs: Convert to fs_context arch/ia64/kernel/perfmon.c | 14 + drivers/android/binderfs.c | 173 +++++++++------- drivers/base/devtmpfs.c | 16 + drivers/dax/super.c | 13 + drivers/gpu/drm/drm_drv.c | 14 + drivers/infiniband/hw/qib/qib_fs.c | 26 ++ drivers/misc/cxl/api.c | 10 - drivers/misc/ibmasm/ibmasmfs.c | 21 +- drivers/oprofile/oprofilefs.c | 20 +- drivers/scsi/cxlflash/ocxl_hw.c | 21 +- drivers/usb/gadget/legacy/inode.c | 21 +- drivers/virtio/virtio_balloon.c | 19 +- drivers/xen/xenfs/super.c | 21 +- fs/aio.c | 15 + fs/anon_inodes.c | 12 + fs/binfmt_misc.c | 20 +- fs/block_dev.c | 14 + fs/btrfs/tests/btrfs-tests.c | 13 + fs/configfs/mount.c | 20 +- fs/efivarfs/super.c | 20 +- fs/fuse/control.c | 20 +- fs/libfs.c | 91 ++++++-- fs/nfsd/nfsctl.c | 33 ++- fs/nsfs.c | 13 + fs/openpromfs/inode.c | 20 +- fs/pipe.c | 12 + fs/ramfs/inode.c | 104 ++++++--- fs/super.c | 106 ++-------- include/linux/fs.h | 21 -- include/linux/fs_context.h | 8 + include/linux/ramfs.h | 6 - include/linux/shmem_fs.h | 4 init/do_mounts.c | 12 - mm/shmem.c | 396 ++++++++++++++++++++++++------------ mm/zsmalloc.c | 19 +- net/socket.c | 14 + net/sunrpc/rpc_pipe.c | 34 ++- security/apparmor/apparmorfs.c | 20 +- security/inode.c | 21 +- security/selinux/selinuxfs.c | 20 +- security/smack/smackfs.c | 34 ++- 41 files changed, 902 insertions(+), 609 deletions(-)
David Howells
2019-Mar-14 16:10 UTC
[PATCH 15/38] vfs: Convert virtio_balloon to fs_context
Signed-off-by: David Howells <dhowells at redhat.com> cc: "Michael S. Tsirkin" <mst at redhat.com> cc: Jason Wang <jasowang at redhat.com> cc: virtualization at lists.linux-foundation.org --- drivers/virtio/virtio_balloon.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index f19061b585a4..89d67c8aa719 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -757,21 +757,22 @@ static int virtballoon_migratepage(struct balloon_dev_info *vb_dev_info, return MIGRATEPAGE_SUCCESS; } +#include <linux/fs_context.h> -static struct dentry *balloon_mount(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data) -{ - static const struct dentry_operations ops = { - .d_dname = simple_dname, - }; +static const struct dentry_operations balloon_dops = { + .d_dname = simple_dname, +}; - return mount_pseudo(fs_type, "balloon-kvm:", NULL, &ops, - BALLOON_KVM_MAGIC); +static int balloon_init_fs_context(struct fs_context *fc) +{ + return vfs_init_pseudo_fs_context(fc, "balloon-kvm:", + NULL, NULL, + &balloon_dops, BALLOON_KVM_MAGIC); } static struct file_system_type balloon_fs = { .name = "balloon-kvm", - .mount = balloon_mount, + .init_fs_context = balloon_init_fs_context, .kill_sb = kill_anon_super, };
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