user/sven/linux.git/include/linux/proc_ns.h, branch v4.1.37

take the targets of /proc//ns/ symlinks to separate fs

2014-12-11T02:30:20Z

New pseudo-filesystem: nsfs. Targets of /proc/*/ns/* live there now. It's not mountable (not even registered, so it's not in /proc/filesystems, etc.). Files on it *are* bindable - we explicitly permit that in do_loopback(). This stuff lives in fs/nsfs.c now; proc_ns_fget() moved there as well. get_proc_ns() is a macro now (it's simply returning ->i_private; would have been an inline, if not for header ordering headache). proc_ns_inode() is an ex-parrot. The interface used in procfs is ns_get_path(path, task, ops) and ns_get_name(buf, size, task, ops). Dentries and inodes are never hashed; a non-counting reference to dentry is stashed in ns_common (removed by ->d_prune()) and reused by ns_get_path() if present. See ns_get_path()/ns_prune_dentry/nsfs_evict() for details of that mechanism. As the result, proc_ns_follow_link() has stopped poking in nd->path.mnt; it does nd_jump_link() on a consistent pair it gets from ns_get_path(). Signed-off-by: Al Viro

bury struct proc_ns in fs/proc

2014-12-04T19:34:54Z

a) make get_proc_ns() return a pointer to struct ns_common b) mirror ns_ops in dentry->d_fsdata of ns dentries, so that is_mnt_ns_file() could get away with fewer dereferences. That way struct proc_ns becomes invisible outside of fs/proc/*.c Signed-off-by: Al Viro

new helpers: ns_alloc_inum/ns_free_inum

2014-12-04T19:34:36Z

take struct ns_common *, for now simply wrappers around proc_{alloc,free}_inum() Signed-off-by: Al Viro

make proc_ns_operations work with struct ns_common * instead of void *

2014-12-04T19:34:17Z

We can do that now. And kill ->inum(), while we are at it - all instances are identical. Signed-off-by: Al Viro

proc: Split the namespace stuff out into linux/proc_ns.h

2013-05-01T21:29:39Z