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File locking related changes for v4.14

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Merge tag 'locks-v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux

Pull file locking updates from Jeff Layton:
 "This pile just has a few file locking fixes from Ben Coddington. There
  are a couple of cleanup patches + an attempt to bring sanity to the
  l_pid value that is reported back to userland on an F_GETLK request.

  After a few gyrations, he came up with a way for filesystems to
  communicate to the VFS layer code whether the pid should be translated
  according to the namespace or presented as-is to userland"

* tag 'locks-v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
  locks: restore a warn for leaked locks on close
  fs/locks: Remove fl_nspid and use fs-specific l_pid for remote locks
  fs/locks: Use allocation rather than the stack in fcntl_getlk()
This commit is contained in:
Linus Torvalds 2017-09-06 13:43:26 -07:00
commit 066dea8c30
8 changed files with 93 additions and 54 deletions
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6
fs/fuse/file.c
View file

@ -2102,11 +2102,11 @@ static int convert_fuse_file_lock(struct fuse_conn *fc,
fl->fl_end = ffl->end;
/*
* Convert pid into the caller's pid namespace. If the pid
* does not map into the namespace fl_pid will get set to 0.
* Convert pid into init's pid namespace. The locks API will
* translate it into the caller's pid namespace.
*/
rcu_read_lock();
fl->fl_pid = pid_vnr(find_pid_ns(ffl->pid, fc->pid_ns));
fl->fl_pid = pid_nr_ns(find_pid_ns(ffl->pid, fc->pid_ns), &init_pid_ns);
rcu_read_unlock();
break;