linux.git/fs/namespace.c, branch v2.6.31

vfs: mnt_want_write_file(): fix special file handling

2009-08-07T17:39:56+00:00

I suspect that mnt_want_write_file() may have wrong assumption.  I think
mnt_want_write_file() is assuming it increments ->mnt_writers if
(file->f_mode & FMODE_WRITE).  But, if it's special_file(), it is false?

Signed-off-by: OGAWA Hirofumi 
Acked-by: Dave Hansen 
Cc: Al Viro 
Cc: Nick Piggin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

headers: mnt_namespace.h redux

2009-07-08T16:31:56+00:00

Fix various silly problems wrt mnt_namespace.h:

 - exit_mnt_ns() isn't used, remove it
 - done that, sched.h and nsproxy.h inclusions aren't needed
 - mount.h inclusion was need for vfsmount_lock, but no longer
 - remove mnt_namespace.h inclusion from files which don't use anything
   from mnt_namespace.h

Signed-off-by: Alexey Dobriyan 
Signed-off-by: Linus Torvalds

... and the same for vfsmount id/mount group id

2009-06-24T12:15:26+00:00

Signed-off-by: Al Viro

VFS: Switch init_mount_tree() to use the new create_mnt_ns() helper

2009-06-24T12:15:24+00:00

Eliminates some duplicated code...

Signed-off-by: Trond Myklebust 
Signed-off-by: Al Viro

VFS: Add VFS helper functions for setting up private namespaces

2009-06-23T04:28:25+00:00

The purpose of this patch is to improve the remote mount path lookup
support for distributed filesystems such as the NFSv4 client.

When given a mount command of the form "mount server:/foo/bar /mnt", the
NFSv4 client is required to look up the filehandle for "server:/", and
then look up each component of the remote mount path "foo/bar" in order
to find the directory that is actually going to be mounted on /mnt.
Following that remote mount path may involve following symlinks,
crossing server-side mount points and even following referrals to
filesystem volumes on other servers.

Since the standard VFS path lookup code already supports walking paths
that contain all these features (using in-kernel automounts for
following referrals) we would like to be able to reuse that rather than
duplicate the full path traversal functionality in the NFSv4 client code.

This patch therefore defines a VFS helper function create_mnt_ns(), that
sets up a temporary filesystem namespace and attaches a root filesystem to
it. It exports the create_mnt_ns() and put_mnt_ns() function for use by
filesystem modules.

Signed-off-by: Trond Myklebust 
Signed-off-by: Linus Torvalds

VFS: Uninline the function put_mnt_ns()

2009-06-23T04:28:25+00:00

In order to allow modules to use it without having to export vfsmount_lock.

Signed-off-by: Trond Myklebust 
Signed-off-by: Linus Torvalds

Push BKL down into do_remount_sb()

2009-06-12T01:36:08+00:00

[folded fix from Jiri Slaby]

Signed-off-by: Al Viro

Push BKL down beyond VFS-only parts of do_mount()

2009-06-12T01:36:08+00:00

Signed-off-by: Al Viro

Push BKL into do_mount()

2009-06-12T01:36:08+00:00

Signed-off-by: Al Viro

dcache: extrace and use d_unlinked()

2009-06-12T01:36:06+00:00

d_unlinked() will be used in middle-term to ban checkpointing when opened
but unlinked file is detected, and in long term, to detect such situation
and special case on it.

Signed-off-by: Alexey Dobriyan 
Signed-off-by: Al Viro