提交 · 962830df366b66e71849040770ae6ba55a8b4aec · xiphi1978 / linux

30 5月, 2012 1 次提交

brlocks/lglocks: API cleanups · 962830df

由 Andi Kleen 提交于 5月 08, 2012

lglocks and brlocks are currently generated with some complicated macros
in lglock.h.  But there's no reason to not just use common utility
functions and put all the data into a common data structure.

In preparation, this patch changes the API to look more like normal
function calls with pointers, not magic macros.

The patch is rather large because I move over all users in one go to keep
it bisectable.  This impacts the VFS somewhat in terms of lines changed.
But no actual behaviour change.

[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: NAndi Kleen <ak@linux.intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

962830df

07 1月, 2012 4 次提交

vfs: prevent remount read-only if pending removes · 8e8b8796

由 Miklos Szeredi 提交于 11月 21, 2011

If there are any inodes on the super block that have been unlinked
(i_nlink == 0) but have not yet been deleted then prevent the
remounting the super block read-only.
Reported-by: NToshiyuki Okajima <toshi.okajima@jp.fujitsu.com>
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
Tested-by: NToshiyuki Okajima <toshi.okajima@jp.fujitsu.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

8e8b8796

vfs: protect remounting superblock read-only · 4ed5e82f

由 Miklos Szeredi 提交于 11月 21, 2011

Currently remouting superblock read-only is racy in a major way.

With the per mount read-only infrastructure it is now possible to
prevent most races, which this patch attempts.

Before starting the remount read-only, iterate through all mounts
belonging to the superblock and if none of them have any pending
writes, set sb->s_readonly_remount.  This indicates that remount is in
progress and no further write requests are allowed.  If the remount
succeeds set MS_RDONLY and reset s_readonly_remount.

If the remounting is unsuccessful just reset s_readonly_remount.
This can result in transient EROFS errors, despite the fact the
remount failed.  Unfortunately hodling off writes is difficult as
remount itself may touch the filesystem (e.g. through load_nls())
which would deadlock.

A later patch deals with delayed writes due to nlink going to zero.
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
Tested-by: NToshiyuki Okajima <toshi.okajima@jp.fujitsu.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

4ed5e82f

vfs: keep list of mounts for each superblock · 39f7c4db

由 Miklos Szeredi 提交于 11月 21, 2011

Keep track of vfsmounts belonging to a superblock.  List is protected
by vfsmount_lock.
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
Tested-by: NToshiyuki Okajima <toshi.okajima@jp.fujitsu.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

39f7c4db

A
vfs: switch ->show_options() to struct dentry * · 34c80b1d
由 Al Viro 提交于 12月 08, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
34c80b1d

04 1月, 2012 35 次提交
- A
  vfs: trim includes a bit · d10577a8
  由 Al Viro 提交于 12月 07, 2011
```
[folded fix for missing magic.h from Tetsuo Handa]
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  d10577a8
- A
  switch mnt_namespace ->root to struct mount · be08d6d2
  由 Al Viro 提交于 12月 06, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  be08d6d2
- A
  vfs: take /proc/*/mounts and friends to fs/proc_namespace.c · 0226f492
  由 Al Viro 提交于 12月 06, 2011
```
rationale: that stuff is far tighter bound to fs/namespace.c than to
the guts of procfs proper.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  0226f492
- A
  vfs: opencode mntget() mnt_set_mountpoint() · 3a2393d7
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  3a2393d7
- A
  vfs: spread struct mount - remaining argument of next_mnt() · 909b0a88
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  909b0a88
- A
  vfs: move fsnotify junk to struct mount · c63181e6
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  c63181e6
- A
  vfs: move mnt_devname · 52ba1621
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  52ba1621
- A
  vfs: move mnt_list to struct mount · 1a4eeaf2
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  1a4eeaf2
- A
  vfs: switch pnode.h macros to struct mount * · fc7be130
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  fc7be130
- A
  vfs: move the rest of int fields to struct mount · 863d684f
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  863d684f
- A
  vfs: mnt_id/mnt_group_id moved · 15169fe7
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  15169fe7
- A
  vfs: mnt_ns moved to struct mount · 143c8c91
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  143c8c91
- A
  vfs: spread struct mount - mntput_no_expire · 900148dc
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  900148dc
- A
  vfs: spread struct mount - do_add_mount and graft_tree · 95bc5f25
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  95bc5f25
- A
  vfs: take mnt_share/mnt_slave/mnt_slave_list and mnt_expire to struct mount · 6776db3d
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  6776db3d
- A
  vfs: and now we can make ->mnt_master point to struct mount · 32301920
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  32301920
- A
  vfs: take mnt_master to struct mount · d10e8def
  由 Al Viro 提交于 11月 25, 2011
```
make IS_MNT_SLAVE take struct mount * at the same time
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  d10e8def
- A
  vfs: spread struct mount - remaining argument of mnt_set_mountpoint() · 14cf1fa8
  由 Al Viro 提交于 11月 25, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  14cf1fa8
- A
  vfs: spread struct mount - propagate_mnt() · a8d56d8e
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  a8d56d8e
- A
  vfs: spread struct mount - get_dominating_id / do_make_slave · 6fc7871f
  由 Al Viro 提交于 11月 24, 2011
```
next pile of horrors, similar to mnt_parent one; this time it's
mnt_master.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  6fc7871f
- A
  vfs: take mnt_child/mnt_mounts to struct mount · 6b41d536
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  6b41d536
- A
  vfs: all counters taken to struct mount · 68e8a9fe
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  68e8a9fe
- A
  vfs: spread struct mount - work with counters · 83adc753
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  83adc753
- A
  vfs: move mnt_mountpoint to struct mount · a73324da
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  a73324da
- A
  vfs: now it can be done - make mnt_parent point to struct mount · 0714a533
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  0714a533
- A
  vfs: mnt_parent moved to struct mount · 3376f34f
  由 Al Viro 提交于 11月 24, 2011
```
the second victim...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  3376f34f
- A
  vfs: spread struct mount - is_path_reachable · 643822b4
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  643822b4
- A
  vfs: spread struct mount - mnt_has_parent · 676da58d
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  676da58d
- A
  vfs: spread struct mount - do_umount/propagate_mount_busy · 1ab59738
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  1ab59738
- A
  vfs: spread struct mount mnt_set_mountpoint child argument · 44d964d6
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  44d964d6
- A
  vfs: spread struct mount - clone_mnt/copy_tree argument · 87129cc0
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  87129cc0
- A
  vfs: spread struct mount - shrink_submounts/select_submounts · 692afc31
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  692afc31
- A
  vfs: spread struct mount - umount_tree argument · 761d5c38
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  761d5c38
- A
  vfs: the first spoils - mnt_hash moved · 1b8e5564
  由 Al Viro 提交于 11月 24, 2011
```
taken out of struct vfsmount into struct mount
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  1b8e5564
- A
  vfs: spread struct mount to remaining users of ->mnt_hash · d5e50f74
  由 Al Viro 提交于 11月 24, 2011
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  d5e50f74