linux-kernel - [PATCH RESEND 8/8] mm: Remove mmap_legacy_base and mmap_compat_legacy_code fields from mm

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Message-Id: <20190620050328.8942-9-alex@ghiti.fr>
Date:   Thu, 20 Jun 2019 01:03:28 -0400
From:   Alexandre Ghiti <alex@...ti.fr>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     "James E . J . Bottomley" <James.Bottomley@...senPartnership.com>,
        Helge Deller <deller@....de>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        "David S . Miller" <davem@...emloft.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-parisc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
        sparclinux@...r.kernel.org, linux-mm@...ck.org,
        Alexandre Ghiti <alex@...ti.fr>
Subject: [PATCH RESEND 8/8] mm: Remove mmap_legacy_base and mmap_compat_legacy_code fields from mm_struct

Now that x86 and parisc do not use those fields anymore, remove them from
mm code.

Signed-off-by: Alexandre Ghiti <alex@...ti.fr>
---
 include/linux/mm_types.h | 2 --
 mm/debug.c               | 4 ++--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 1d1093474c1a..9a5935f9cc7e 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -364,11 +364,9 @@ struct mm_struct {
 				unsigned long pgoff, unsigned long flags);
 #endif
 		unsigned long mmap_base;	/* base of mmap area */
-		unsigned long mmap_legacy_base;	/* base of mmap area in bottom-up allocations */
 #ifdef CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES
 		/* Base adresses for compatible mmap() */
 		unsigned long mmap_compat_base;
-		unsigned long mmap_compat_legacy_base;
 #endif
 		unsigned long task_size;	/* size of task vm space */
 		unsigned long highest_vm_end;	/* highest vma end address */
diff --git a/mm/debug.c b/mm/debug.c
index 8345bb6e4769..3ddffe1efcda 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -134,7 +134,7 @@ void dump_mm(const struct mm_struct *mm)
 #ifdef CONFIG_MMU
 		"get_unmapped_area %px\n"
 #endif
-		"mmap_base %lu mmap_legacy_base %lu highest_vm_end %lu\n"
+		"mmap_base %lu highest_vm_end %lu\n"
 		"pgd %px mm_users %d mm_count %d pgtables_bytes %lu map_count %d\n"
 		"hiwater_rss %lx hiwater_vm %lx total_vm %lx locked_vm %lx\n"
 		"pinned_vm %llx data_vm %lx exec_vm %lx stack_vm %lx\n"
@@ -162,7 +162,7 @@ void dump_mm(const struct mm_struct *mm)
 #ifdef CONFIG_MMU
 		mm->get_unmapped_area,
 #endif
-		mm->mmap_base, mm->mmap_legacy_base, mm->highest_vm_end,
+		mm->mmap_base, mm->highest_vm_end,
 		mm->pgd, atomic_read(&mm->mm_users),
 		atomic_read(&mm->mm_count),
 		mm_pgtables_bytes(mm),
-- 
2.20.1