linux.git/fs/namespace.c, branch v2.6.26-rc7

fs: replace remaining FUNCTION occurrences

2008-04-30T15:29:54+00:00

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

vfs: remove lives_below_in_same_fs()

2008-04-29T15:06:06+00:00

Remove lives_below_in_same_fs() since is_subdir() from fs/dcache.c is
providing the same functionality.

Signed-off-by: Jan Blunck 
Acked-by: Miklos Szeredi 
Cc: Al Viro 
Cc: Christoph Hellwig 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

quota: remove superfluous DQUOT_OFF() in fs/namespace.c

2008-04-28T15:58:33+00:00

We don't need to turn quotas off before remounting root ro, because
do_remount_sb() already handles this.

Signed-off-by: Jan Kara 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] restore sane ->umount_begin() API

2008-04-25T13:23:25+00:00

Signed-off-by: Al Viro

[patch 7/7] vfs: mountinfo: show dominating group id

2008-04-23T04:05:09+00:00

Show peer group ID of nearest dominating group that has intersection
with the mount's namespace.

Signed-off-by: Miklos Szeredi 
Signed-off-by: Al Viro

[patch 6/7] vfs: mountinfo: add /proc//mountinfo

2008-04-23T04:05:03+00:00

[mszeredi@suse.cz] rewrite and split big patch into managable chunks

/proc/mounts in its current form lacks important information:

 - propagation state
 - root of mount for bind mounts
 - the st_dev value used within the filesystem
 - identifier for each mount and it's parent

It also suffers from the following problems:

 - not easily extendable
 - ambiguity of mountpoints within a chrooted environment
 - doesn't distinguish between filesystem dependent and independent options
 - doesn't distinguish between per mount and per super block options

This patch introduces /proc//mountinfo which attempts to address
all these deficiencies.

Code shared between /proc//mounts and /proc//mountinfo is
extracted into separate functions.

Thanks to Al Viro for the help in getting the design right.

Signed-off-by: Ram Pai 
Signed-off-by: Miklos Szeredi 
Signed-off-by: Al Viro

[patch 5/7] vfs: mountinfo: allow using process root

2008-04-23T04:04:57+00:00

Allow /proc//mountinfo to use the root of  to calculate
mountpoints.

 - move definition of 'struct proc_mounts' to 
 - add the process's namespace and root to this structure
 - pass a pointer to 'struct proc_mounts' into seq_operations

In addition the following cleanups are made:

 - use a common open function for /proc//{mounts,mountstat}
 - surround namespace.c part of these proc files with #ifdef CONFIG_PROC_FS
 - make the seq_operations structures const

Signed-off-by: Miklos Szeredi 
Signed-off-by: Al Viro

[patch 4/7] vfs: mountinfo: add mount peer group ID

2008-04-23T04:04:51+00:00

Add a unique ID to each peer group using the IDR infrastructure.  The
identifiers are reused after the peer group dissolves.

The IDR structures are protected by holding namepspace_sem for write
while allocating or deallocating IDs.

IDs are allocated when a previously unshared vfsmount becomes the
first member of a peer group.  When a new member is added to an
existing group, the ID is copied from one of the old members.

IDs are freed when the last member of a peer group is unshared.

Setting the MNT_SHARED flag on members of a subtree is done as a
separate step, after all the IDs have been allocated.  This way an
allocation failure can be cleaned up easilty, without affecting the
propagation state.

Based on design sketch by Al Viro.

Signed-off-by: Miklos Szeredi 
Signed-off-by: Al Viro

[patch 3/7] vfs: mountinfo: add mount ID

2008-04-23T04:04:45+00:00

Add a unique ID to each vfsmount using the IDR infrastructure.  The
identifiers are reused after the vfsmount is freed.

Signed-off-by: Miklos Szeredi 
Signed-off-by: Al Viro

[PATCH] get rid of more nameidata passing in namespace.c

2008-04-22T03:13:47+00:00

Further reduction of stack footprint (sys_pivot_root());
lose useless BKL in there, while we are at it.

Signed-off-by: Al Viro