Commits · 8c0a85377048b64c880e76ec7368904fe46d0b94 · nexedi / linux

03 Oct, 2012 3 commits

fs: push rcu_barrier() from deactivate_locked_super() to filesystems · 8c0a8537

Kirill A. Shutemov authored Sep 26, 2012

There's no reason to call rcu_barrier() on every
deactivate_locked_super().  We only need to make sure that all delayed rcu
free inodes are flushed before we destroy related cache.

Removing rcu_barrier() from deactivate_locked_super() affects some fast
paths.  E.g.  on my machine exit_group() of a last process in IPC
namespace takes 0.07538s.  rcu_barrier() takes 0.05188s of that time.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

8c0a8537

btrfs: reada_extent doesn't need kref for refcount · 99621b44

Al Viro authored Aug 29, 2012

All increments and decrements are under the same spinlock - have to be,
since they need to protect the radix_tree it's found in.  Just use
int, no need to wank with kref...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

99621b44

coredump: move core dump functionality into its own file · 10c28d93

Alex Kelly authored Sep 26, 2012

This prepares for making core dump functionality optional.

The variable "suid_dumpable" and associated functions are left in fs/exec.c
because they're used elsewhere, such as in ptrace.
Signed-off-by: Alex Kelly <alex.page.kelly@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

10c28d93

27 Sep, 2012 37 commits
- coredump: prevent double-free on an error path in core dumper · f34f9d18
  Denys Vlasenko authored Sep 26, 2012
```
In !CORE_DUMP_USE_REGSET case, if elf_note_info_init fails to allocate
memory for info->fields, it frees already allocated stuff and returns
error to its caller, fill_note_info.  Which in turn returns error to its
caller, elf_core_dump.  Which jumps to cleanup label and calls
free_note_info, which will happily try to free all info->fields again.
BOOM.

This is the fix.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Venu Byravarasu <vbyravarasu@nvidia.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
```
  f34f9d18
- usb/gadget: fix misannotations · 260ef311
  Al Viro authored Sep 26, 2012
```
__user * != * __user
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  260ef311
- fcntl: fix misannotations · 63784dd0
  Al Viro authored Sep 26, 2012
```
__user * != * __user...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  63784dd0
- ceph: don't abuse d_delete() on failure exits · 2744c171
  Al Viro authored Sep 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  2744c171
- hypfs: ->d_parent is never NULL or negative · 3a8ca1b6
  Al Viro authored Sep 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  3a8ca1b6
- vfs: delete surplus inode NULL check · 1fe0c023
  Alan Cox authored Sep 19, 2012
```
Each iteration of d_delete we reload inode from dentry->d_inode and
then call S_ISDIR(inode-i_mode), so inode cannot possibly be NULL
shortly afterwards unless something went horribly wrong.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  1fe0c023
- switch simple cases of fget_light to fdget · 2903ff01
  Al Viro authored Aug 28, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  2903ff01
- new helpers: fdget()/fdput() · a5b470ba
  Al Viro authored Aug 27, 2012
```
Signed-off-bs: Al Viro <viro@zeniv.linux.org.uk>
```
  a5b470ba
- switch o2hb_region_dev_write() to fget_light() · 2a117354
  Al Viro authored Aug 27, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  2a117354
- proc_map_files_readdir(): don't bother with grabbing files · 7b540d06
  Al Viro authored Aug 27, 2012
```
all we need is their ->f_mode, so just collect _that_
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  7b540d06
- make get_file() return its argument · cb0942b8
  Al Viro authored Aug 27, 2012
```
simplifies a bunch of callers...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  cb0942b8
- vhost_set_vring(): turn pollstart/pollstop into bool · cecb46f1
  Al Viro authored Aug 27, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  cecb46f1
- switch prctl_set_mm_exe_file() to fget_light() · e10ce27f
  Al Viro authored Aug 27, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  e10ce27f
- switch xfs_find_handle() to fget_light() · 64e09fa2
  Al Viro authored Aug 27, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  64e09fa2
- switch xfs_swapext() to fget_light() · 1ea65c96
  Al Viro authored Aug 27, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  1ea65c96
- switch coda get_device_index() to fget_light() · 78f7d75e
  Al Viro authored Aug 27, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  78f7d75e
- switch infinibarf users of fget() to fget_light() · 88b428d6
  Al Viro authored Aug 27, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  88b428d6
- switch vfio_group_set_container() to fget_light() · 1d3653a7
  Al Viro authored Aug 27, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  1d3653a7
- switch btrfs_ioctl_clone() to fget_light() · 8319aa91
  Al Viro authored Aug 27, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  8319aa91
- switch mqueue syscalls to fget_light() · 515e0d66
  Al Viro authored Aug 27, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  515e0d66
- switch SNDRV_PCM_IOCTL_LINK to fget_light() · bdbf6943
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  bdbf6943
- switch timerfd_[sg]ettime(2) to fget_light() · 4109633f
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  4109633f
- switch epoll_wait(2) to fget_light() · 5e196a9c
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  5e196a9c
- switch btrfs_ioctl_snap_create_transid() to fget_light() · ecd18815
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  ecd18815
- switch EXT4_IOC_MOVE_EXT to fget_light() · 6bdf2954
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  6bdf2954
- export fget_light · 4557c669
  Al Viro authored Aug 28, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  4557c669
- ext4: close struct file leak on EXT4_IOC_MOVE_EXT · 399c9b86
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  399c9b86
- switch hpux_getdents() to fget_light() · ecaa80fb
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  ecaa80fb
- switch itanic perfmonctl(2) to fget_light() · 7456a29b
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  7456a29b
- switch osf_getdirentries() to fget_light() · 866ecfdd
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  866ecfdd
- switch readahead(2) to fget_light() · 132ea247
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  132ea247
- switch fadvise(2) to fget_light() · 61144378
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  61144378
- switch fchmod(2) to fget_light() · d6483b7a
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  d6483b7a
- switch fallocate(2) to fget_light() · 6b48c5b2
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  6b48c5b2
- switch ftruncate(2) to fget_light · bf2965d5
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  bf2965d5
- namei.c: fix BS comment · f6d2ac5c
  Al Viro authored Aug 26, 2012
```
get_write_access() is needed for nfsd, not binfmt_aout (the latter
has no business doing anything of that kind, of course)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  f6d2ac5c
- don't leak O_CLOEXEC into ->f_flags · c6f3d811
  Al Viro authored Aug 26, 2012
```
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
```
  c6f3d811