diff options
| author | Michal Hocko <mhocko@suse.com> | 2017-11-16 04:34:22 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-16 05:21:03 +0300 |
| commit | 8745808fda84c638e45cc860c8fb600bf4b0a2a6 (patch) | |
| tree | 4cc0a5ff3ccf76e73b2fa4bd535e40f261e79e0b /arch/frv | |
| parent | a2e16731728a285bcfcece0feaaa8cf478d24022 (diff) | |
| download | linux-8745808fda84c638e45cc860c8fb600bf4b0a2a6.tar.xz | |
mm, arch: remove empty_bad_page*
empty_bad_page() and empty_bad_pte_table() seem to be relics from old
days which is not used by any code for a long time. I have tried to
find when exactly but this is not really all that straightforward due to
many code movements - traces disappear around 2.4 times.
Anyway no code really references neither empty_bad_page nor
empty_bad_pte_table. We only allocate the storage which is not used by
anybody so remove them.
Link: http://lkml.kernel.org/r/20171004150045.30755-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Ralf Baechle <ralf@linus-mips.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: David Howells <dhowells@redhat.com>
Cc: Rich Felker <dalias@libc.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/frv')
| -rw-r--r-- | arch/frv/mm/init.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/arch/frv/mm/init.c b/arch/frv/mm/init.c index 328f0a292316..cf464100e838 100644 --- a/arch/frv/mm/init.c +++ b/arch/frv/mm/init.c @@ -42,21 +42,9 @@ #undef DEBUG /* - * BAD_PAGE is the page that is used for page faults when linux - * is out-of-memory. Older versions of linux just did a - * do_exit(), but using this instead means there is less risk - * for a process dying in kernel mode, possibly leaving a inode - * unused etc.. - * - * BAD_PAGETABLE is the accompanying page-table: it is initialized - * to point to BAD_PAGE entries. - * * ZERO_PAGE is a special page that is used for zero-initialized * data and COW. */ -static unsigned long empty_bad_page_table; -static unsigned long empty_bad_page; - unsigned long empty_zero_page; EXPORT_SYMBOL(empty_zero_page); @@ -72,8 +60,6 @@ void __init paging_init(void) unsigned long zones_size[MAX_NR_ZONES] = {0, }; /* allocate some pages for kernel housekeeping tasks */ - empty_bad_page_table = (unsigned long) alloc_bootmem_pages(PAGE_SIZE); - empty_bad_page = (unsigned long) alloc_bootmem_pages(PAGE_SIZE); empty_zero_page = (unsigned long) alloc_bootmem_pages(PAGE_SIZE); memset((void *) empty_zero_page, 0, PAGE_SIZE); |