virtiofs: simplify sb setup
Currently when acquiring an sb for virtiofs fuse_mount_get() is being
called from virtio_fs_set_super() if a new sb is being filled and
fuse_mount_put() is called unconditionally after sget_fc() returns.
The exact same result can be obtained by checking whether
fs_contex->s_fs_info was set to NULL (ref trasferred to sb->s_fs_info) and
only calling fuse_mount_put() if the ref wasn't transferred (error or
matching sb found).
This allows getting rid of virtio_fs_set_super() and fuse_mount_get().
Signed-off-by:
Miklos Szeredi <mszeredi@redhat.com>
parent
66ab33bf
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