Date:   Tue, 8 Jun 2021 15:18:29 +0800
From:   Zhen Lei <thunder.leizhen@...wei.com>
To:     Naoya Horiguchi <naoya.horiguchi@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-mm <linux-mm@...ck.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
CC:     Zhen Lei <thunder.leizhen@...wei.com>
Subject: [PATCH 1/1] mm: remove trailing spaces and tabs

Run the following command to find and remove the trailing spaces and tabs:

find mm/ -type f | xargs sed -r -i 's/[ \t]+$//'

Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
 mm/memory-failure.c | 20 ++++++++++----------
 mm/oom_kill.c       |  2 +-
 mm/page_io.c        |  2 +-
 mm/rmap.c           |  2 +-
 mm/swap_state.c     | 10 +++++-----
 5 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 560d096a7513..46445bb2ea29 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -6,16 +6,16 @@
  * High level machine check handler. Handles pages reported by the
  * hardware as being corrupted usually due to a multi-bit ECC memory or cache
  * failure.
- * 
+ *
  * In addition there is a "soft offline" entry point that allows stop using
  * not-yet-corrupted-by-suspicious pages without killing anything.
  *
  * Handles page cache pages in various states.	The tricky part
- * here is that we can access any page asynchronously in respect to 
- * other VM users, because memory failures could happen anytime and 
- * anywhere. This could violate some of their assumptions. This is why 
- * this code has to be extremely careful. Generally it tries to use 
- * normal locking rules, as in get the standard locks, even if that means 
+ * here is that we can access any page asynchronously in respect to
+ * other VM users, because memory failures could happen anytime and
+ * anywhere. This could violate some of their assumptions. This is why
+ * this code has to be extremely careful. Generally it tries to use
+ * normal locking rules, as in get the standard locks, even if that means
  * the error handling takes potentially a long time.
  *
  * It can be very tempting to add handling for obscure cases here.
@@ -25,12 +25,12 @@
  *   https://git.kernel.org/cgit/utils/cpu/mce/mce-test.git/
  * - The case actually shows up as a frequent (top 10) page state in
  *   tools/vm/page-types when running a real workload.
- * 
+ *
  * There are several operations here with exponential complexity because
- * of unsuitable VM data structures. For example the operation to map back 
- * from RMAP chains to processes has to walk the complete process list and 
+ * of unsuitable VM data structures. For example the operation to map back
+ * from RMAP chains to processes has to walk the complete process list and
  * has non linear complexity with the number. But since memory corruptions
- * are rare we hope to get away with this. This avoids impacting the core 
+ * are rare we hope to get away with this. This avoids impacting the core
  * VM.
  */
 #include <linux/kernel.h>
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index c729a4c4a1ac..2f8bce6c63ac 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/mm/oom_kill.c
- * 
+ *
  *  Copyright (C)  1998,2000  Rik van Riel
  *	Thanks go out to Claus Fischer for some serious inspiration and
  *	for goading me into coding this file...
diff --git a/mm/page_io.c b/mm/page_io.c
index c493ce9ebcf5..9e80be141a73 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -4,7 +4,7 @@
  *
  *  Copyright (C) 1991, 1992, 1993, 1994  Linus Torvalds
  *
- *  Swap reorganised 29.12.95, 
+ *  Swap reorganised 29.12.95,
  *  Asynchronous swapping added 30.12.95. Stephen Tweedie
  *  Removed race in async swapping. 14.4.1996. Bruno Haible
  *  Add swap of shared pages through the page cache. 20.2.1998. Stephen Tweedie
diff --git a/mm/rmap.c b/mm/rmap.c
index b6cfc92f5475..4ca1a212f588 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1040,7 +1040,7 @@ void page_move_anon_rmap(struct page *page, struct vm_area_struct *vma)
  * __page_set_anon_rmap - set up new anonymous rmap
  * @page:	Page or Hugepage to add to rmap
  * @vma:	VM area to add page to.
- * @address:	User virtual address of the mapping	
+ * @address:	User virtual address of the mapping
  * @exclusive:	the page is exclusively owned by the current process
  */
 static void __page_set_anon_rmap(struct page *page,
diff --git a/mm/swap_state.c b/mm/swap_state.c
index 95e391f46468..460828d1c10a 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -178,7 +178,7 @@ void __delete_from_swap_cache(struct page *page,
  * @page: page we want to move to swap
  *
  * Allocate swap space for the page and add the page to the
- * swap cache.  Caller needs to hold the page lock. 
+ * swap cache.  Caller needs to hold the page lock.
  */
 int add_to_swap(struct page *page)
 {
@@ -277,9 +277,9 @@ void clear_shadow_from_swap_cache(int type, unsigned long begin,
 	}
 }
 
-/* 
- * If we are the only user, then try to free up the swap cache. 
- * 
+/*
+ * If we are the only user, then try to free up the swap cache.
+ *
  * Its ok to check for PageSwapCache without the page lock
  * here because we are going to recheck again inside
  * try_to_free_swap() _with_ the lock.
@@ -293,7 +293,7 @@ void free_swap_cache(struct page *page)
 	}
 }
 
-/* 
+/*
  * Perform a free_page(), also freeing any swap cache associated with
  * this page if it is the last user of the page.
  */
-- 
2.25.1

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