Merge tag 'v3.18.37' into linux-linaro-lsk-v3.18

 3. scmd recovered

    ACTION: scsi_eh_finish_cmd() is invoked to EH-finish scmd

	- shost->host_failed--

	- clear scmd->eh_eflags

	- scsi_setup_cmd_retry()

	- move from local eh_work_q to local eh_done_q

    LOCKING: none

    CONCURRENCY: at most one thread per separate eh_work_q to

		 keep queue manipulation lockless

 4. EH completes

    ACTION: scsi_eh_flush_done_q() retries scmds or notifies upper

	    layer of failure.

	    layer of failure. May be called concurrently but must have

	    a no more than one thread per separate eh_work_q to

	    manipulate the queue locklessly

	- scmd is removed from eh_done_q and scmd->eh_entry is cleared

	- if retry is necessary, scmd is requeued using

          scsi_queue_insert()

	- otherwise, scsi_finish_command() is invoked for scmd

	- zero shost->host_failed

    LOCKING: queue or finish function performs appropriate locking

- nr_open

- overflowuid

- overflowgid

- pipe-user-pages-hard

- pipe-user-pages-soft

- protected_hardlinks

- protected_symlinks

- suid_dumpable

==============================================================

pipe-user-pages-hard:

Maximum total number of pages a non-privileged user may allocate for pipes.

Once this limit is reached, no new pipes may be allocated until usage goes

below the limit again. When set to 0, no limit is applied, which is the default

setting.

==============================================================

pipe-user-pages-soft:

Maximum total number of pages a non-privileged user may allocate for pipes

before the pipe size gets limited to a single page. Once this limit is reached,

new pipes will be limited to a single page in size for this user in order to

limit total memory usage, and trying to increase them using fcntl() will be

denied until usage goes below the limit again. The default value allows to

allocate up to 1024 pipes at their default size. When set to 0, no limit is

applied.

==============================================================

protected_hardlinks:

A long-standing class of security issues is the hardlink-based

VERSION = 3

PATCHLEVEL = 18

SUBLEVEL = 36

SUBLEVEL = 37

EXTRAVERSION =

NAME = Diseased Newt

cflags-$(CONFIG_ARC_HAS_LLSC)		+= -mlock

cflags-$(CONFIG_ARC_HAS_SWAPE)		+= -mswape

cflags-$(CONFIG_ARC_HAS_RTSC)		+= -mrtsc

cflags-$(CONFIG_ARC_DW2_UNWIND)		+= -fasynchronous-unwind-tables

# By default gcc 4.8 generates dwarf4 which kernel unwinder can't grok

ifeq ($(atleast_gcc48),y)

	 * prelogue is setup (callee regs saved and then fp set and not other

	 * way around

	 */

	pr_warn("CONFIG_ARC_DW2_UNWIND needs to be enabled\n");

	pr_warn_once("CONFIG_ARC_DW2_UNWIND needs to be enabled\n");

	return 0;

#endif