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mm, arch: remove empty_bad_page*

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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/[email protected]
Signed-off-by: Michal Hocko <[email protected]>
Acked-by: Ralf Baechle <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: David Howells <[email protected]>
Cc: Rich Felker <[email protected]>
Cc: Jeff Dike <[email protected]>
Cc: Richard Weinberger <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Michal Hocko 2017-11-15 17:34:22 -08:00 • committed by Linus Torvalds
commit 8745808fda
7 changed files with 2 additions and 54 deletions
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8
arch/sh/kernel/head_64.S
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@ -101,14 +101,6 @@ empty_zero_page:
mmu_pdtp_cache:
.space PAGE_SIZE, 0
.global empty_bad_page
empty_bad_page:
.space PAGE_SIZE, 0
.global empty_bad_pte_table
empty_bad_pte_table:
.space PAGE_SIZE, 0
.global fpu_in_use
fpu_in_use: .quad 0