diff options
| author | Michal Hocko <mhocko@suse.com> | 2017-11-16 02:34:22 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-16 03:21:03 +0100 |
| commit | 8745808fda84c638e45cc860c8fb600bf4b0a2a6 (patch) | |
| tree | 4cc0a5ff3ccf76e73b2fa4bd535e40f261e79e0b /arch/um | |
| parent | mm/swap_slots.c: fix race conditions in swap_slots cache init (diff) | |
| download | linux-8745808fda84c638e45cc860c8fb600bf4b0a2a6.tar.xz linux-8745808fda84c638e45cc860c8fb600bf4b0a2a6.zip | |
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/um')
| -rw-r--r-- | arch/um/kernel/mem.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index e7437ec62710..3c0e470ea646 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -22,8 +22,6 @@ /* allocated in paging_init, zeroed in mem_init, and unchanged thereafter */ unsigned long *empty_zero_page = NULL; EXPORT_SYMBOL(empty_zero_page); -/* allocated in paging_init and unchanged thereafter */ -static unsigned long *empty_bad_page = NULL; /* * Initialized during boot, and readonly for initializing page tables @@ -146,7 +144,6 @@ void __init paging_init(void) int i; empty_zero_page = (unsigned long *) alloc_bootmem_low_pages(PAGE_SIZE); - empty_bad_page = (unsigned long *) alloc_bootmem_low_pages(PAGE_SIZE); for (i = 0; i < ARRAY_SIZE(zones_size); i++) zones_size[i] = 0; |