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Kirill A. Shutemov b6ec57f4b9 thp: change pmd_trans_huge_lock() interface to return ptl 
After THP refcounting rework we have only two possible return values
from pmd_trans_huge_lock(): success and failure.  Return-by-pointer for
ptl doesn't make much sense in this case.

Let's convert pmd_trans_huge_lock() to return ptl on success and NULL on
failure.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Minchan Kim <minchan@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2016-01-21 17:20:51 -08:00
..
Kconfig fs, proc: add help for CONFIG_PROC_CHILDREN 2015-07-17 16:39:52 -07:00
Makefile
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array.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2016-01-20 17:09:18 -08:00
base.c proc read mm's {arg,env}_{start,end} with mmap semaphore taken. 2016-01-20 17:09:18 -08:00
cmdline.c
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consoles.c
…
cpuinfo.c
…
devices.c
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fd.c proc: add a reschedule point in proc_readfd_common() 2016-01-09 02:56:10 -05:00
fd.h
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generic.c proc: change proc_subdir_lock to a rwlock 2015-09-10 13:29:01 -07:00
inode.c kmemcg: account certain kmem allocations to memcg 2016-01-14 16:00:49 -08:00
internal.h proc: Allow creating permanently empty directories that serve as mount points 2015-07-01 10:36:41 -05:00
interrupts.c
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kcore.c x86/fpu, sched: Introduce CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT and use it on x86 2015-07-18 03:42:51 +02:00
kmsg.c
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loadavg.c
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meminfo.c proc: meminfo: estimate available memory more conservatively 2016-01-14 16:00:49 -08:00
namespaces.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2016-01-20 17:09:18 -08:00
nommu.c vfs: add seq_file_path() helper 2015-06-23 18:01:07 -04:00
page.c mm: differentiate page_mapped() from page_mapcount() for compound pages 2016-01-15 17:56:32 -08:00
proc_net.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
proc_sysctl.c fs: Drop unlikely before IS_ERR(_OR_NULL) 2015-09-29 15:13:58 +02:00
proc_tty.c
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root.c vfs: Commit to never having exectuables on proc and sysfs. 2015-07-10 10:39:25 -05:00
self.c switch ->get_link() to delayed_call, kill ->put_link() 2015-12-30 13:01:03 -05:00
softirqs.c
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stat.c genirq: Prevent proc race against freeing of irq descriptors 2014-12-13 13:33:07 +01:00
task_mmu.c thp: change pmd_trans_huge_lock() interface to return ptl 2016-01-21 17:20:51 -08:00
task_nommu.c vfs: add seq_file_path() helper 2015-06-23 18:01:07 -04:00
thread_self.c switch ->get_link() to delayed_call, kill ->put_link() 2015-12-30 13:01:03 -05:00
uptime.c
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version.c
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vmcore.c vmcore: fix PT_NOTE n_namesz, n_descsz overflow issue 2015-02-17 14:34:52 -08:00