Andrey Vagin 49d063cb35 proc: show mnt_id in /proc/pid/fdinfo ... Currently we don't have a way how to determing from which mount point file has been opened. This information is required for proper dumping and restoring file descriptos due to presence of mount namespaces. It's possible, that two file descriptors are opened using the same paths, but one fd references mount point from one namespace while the other fd -- from other namespace. $ ls -l /proc/1/fd/1 lrwx------ 1 root root 64 Mar 19 23:54 /proc/1/fd/1 -> /dev/null $ cat /proc/1/fdinfo/1 pos: 0 flags: 0100002 mnt_id: 16 $ cat /proc/1/mountinfo | grep ^16 16 32 0:4 / /dev rw,nosuid shared:2 - devtmpfs devtmpfs rw,size=1013356k,nr_inodes=253339,mode=755 Signed-off-by: Andrey Vagin <avagin@openvz.org> Acked-by: Pavel Emelyanov <xemul@parallels.com> Acked-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Rob Landley <rob@landley.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Oleg Nesterov <oleg@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-04-07 16:36:04 -07:00
..
caching	FS-Cache: Provide the ability to enable/disable cookies	2013-09-27 18:40:25 +01:00
cifs	cifs: update cifs.txt and remove some outdated infos	2013-09-13 16:29:58 -05:00
configfs	configfs: convert to umode_t	2012-01-03 22:54:57 -05:00
nfs	Documentation/: update 00-INDEX files	2014-02-10 16:01:40 -08:00
pohmelfs	Documentation: Fix multiple typo in Documentation	2012-03-07 16:08:24 +01:00
00-INDEX	Documentation/: update 00-INDEX files	2014-02-10 16:01:40 -08:00
9p.txt	9p: update documentation	2014-01-24 10:55:21 -06:00
Locking	mm: introduce vm_ops->map_pages()	2014-04-07 16:35:52 -07:00
Makefile	Documentation/fs/: split txt and source files	2010-03-12 15:52:35 -08:00
adfs.txt	adfs: add hexadecimal filetype suffix option	2011-03-22 17:44:17 -07:00
affs.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
afs.txt	AFS: Documentation updates	2009-08-19 10:40:13 -07:00
autofs4-mount-control.txt	doc: fix double words	2014-03-21 13:16:58 +01:00
automount-support.txt	…
befs.txt	Documentation: befs.txt: no maintainer, orphaned	2011-08-13 18:34:03 -07:00
bfs.txt	…
btrfs.txt	btrfs: Add treelog mount option.	2014-01-28 13:20:20 -08:00
ceph.txt	ceph: enable/disable dentry complete flags via mount option	2012-01-12 11:00:40 -08:00
coda.txt	…
cramfs.txt	…
debugfs.txt	debugfs: more tightly restrict default mount mode	2012-08-27 13:42:02 -07:00
devpts.txt	…
directory-locking	vfs: take i_mutex on renamed file	2013-11-09 00:16:40 -05:00
dlmfs.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
dnotify.txt	Documentation/fs/: split txt and source files	2010-03-12 15:52:35 -08:00
dnotify_test.c	Documentation/fs/: split txt and source files	2010-03-12 15:52:35 -08:00
ecryptfs.txt	…
efivarfs.txt	efivarfs: Add documentation for the EFI variable filesystem	2012-10-30 10:39:18 +00:00
exofs.txt	exofs: Add option to mount by osdname	2011-03-15 15:02:51 +02:00
ext2.txt	Doc fix: ext2 can only have 32,000 subdirs, not 32,768	2009-06-18 13:03:44 -07:00
ext3.txt	ext3: allow specifying external journal by pathname mount option	2013-07-31 22:11:15 +02:00
ext4.txt	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-09-06 09:36:28 -07:00
f2fs.txt	f2fs: update documents and a MAINTAINERS entry	2014-01-09 21:00:06 +09:00
fiemap.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
files.txt	Wrap accesses to the fd_sets in struct fdtable	2012-02-19 10:30:52 -08:00
fuse.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
gfs2-glocks.txt	GFS2: Update glock doc to add new stats info	2012-05-10 12:41:40 +01:00
gfs2-uevents.txt	Documentation: Fix multiple typo in Documentation	2012-03-07 16:08:24 +01:00
gfs2.txt	GFS2: Update main gfs2 doc	2012-05-10 11:45:31 +01:00
hfs.txt	Documentation: HFS is orphaned	2011-11-04 12:01:48 -07:00
hfsplus.txt	Documentation: update URL to hfsplus Technote 1150	2014-02-20 14:48:51 +01:00
hpfs.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
inotify.txt	Documentation: fix inotify source file paths	2011-11-04 12:01:47 -07:00
isofs.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
jfs.txt	doc: fix misspellings with 'codespell' tool	2013-05-28 12:02:12 +02:00
locks.txt	doc: fix broken references	2011-09-27 18:08:04 +02:00
logfs.txt	fix "seperate" typos in comments	2010-05-10 11:56:30 +02:00
mandatory-locking.txt	…
ncpfs.txt	ncpfs: remove dead URL from documentation	2009-09-23 07:39:42 -07:00
nilfs2.txt	nilfs2: update project's web site in nilfs2.txt	2014-04-03 16:21:26 -07:00
ntfs.txt	Documentation/filesystems/ntfs.txt: remove changelog reference	2014-04-03 16:21:27 -07:00
ocfs2.txt	ocfs2: clean up mount option about atime in ocfs2.txt	2011-05-23 23:37:12 -07:00
omfs.txt	…
path-lookup.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
porting	mm + fs: store shadow entries in page cache	2014-04-03 16:21:01 -07:00
proc.txt	proc: show mnt_id in /proc/pid/fdinfo	2014-04-07 16:36:04 -07:00
qnx6.txt	doc: filesystems : Fix typo in Documentations/filesystems	2013-08-20 13:45:56 +02:00
quota.txt	…
ramfs-rootfs-initramfs.txt	initmpfs: use initramfs if rootfstype= or root= specified	2013-09-11 15:59:38 -07:00
relay.txt	doc: Fix typo in doucmentations	2013-07-25 12:34:15 +02:00
romfs.txt	Documentation/filesystems/romfs.txt: fixing link to genromfs	2011-02-17 22:04:46 +01:00
seq_file.txt	seq_file: use proc_create() in documentation	2009-12-16 07:20:07 -08:00
sharedsubtree.txt	Documentation: Fix trivial typo in filesystems/sharedsubtree.txt	2010-10-25 21:18:21 -04:00
spufs.txt	…
squashfs.txt	Squashfs: Update documentation to include xattrs	2011-12-30 01:20:24 +00:00
sysfs-pci.txt	PCI: Allow read/write access to sysfs I/O port resources	2010-07-30 09:32:08 -07:00
sysfs-tagging.txt	doc: Fix typo in doucmentations	2013-07-25 12:34:15 +02:00
sysfs.txt	Documentation/filesystems/sysfs.txt: fix device_attribute declaration	2014-01-23 16:37:00 -08:00
sysv-fs.txt	…
tmpfs.txt	mempolicy: document cpuset interaction with tmpfs mpol mount option	2010-05-25 08:06:57 -07:00
ubifs.txt	UBIFS: switch self-check knobs to debugfs	2011-07-04 10:54:28 +03:00
udf.txt	udf: implement mode and dmode mounting options	2009-04-02 12:29:50 +02:00
ufs.txt	…
vfat.txt	Documentation/filesystems/vfat.txt: fix directory entry example	2013-11-13 12:09:32 +09:00
vfs.txt	vfs: add renameat2 syscall	2014-04-01 17:08:42 +02:00
xfs-delayed-logging-design.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs-self-describing-metadata.txt	xfs: add metadata CRC documentation	2013-04-27 13:27:43 -05:00
xfs.txt	doc: filesystems : Fix typo in Documentations/filesystems	2013-08-20 13:45:56 +02:00
xip.txt	…