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alpha: get rid of the remnants of BAD_PAGE and friends

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unused since 2.4 times...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2023-02-02 14:03:31 -05:00
parent 90b0615fb5
commit f4cfb3c49f
2 changed files with 0 additions and 37 deletions
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10
arch/alpha/include/asm/pgtable.h
View File

@@ -126,19 +126,9 @@ struct vm_area_struct;
#define pgprot_noncached(prot) (prot)
/*
* BAD_PAGETABLE is used when we need a bogus page-table, while
* BAD_PAGE is used for a bogus page.
*
* ZERO_PAGE is a global shared page that is always zero: used
* for zero-mapped memory areas etc..
*/
extern pte_t __bad_page(void);
extern pmd_t * __bad_pagetable(void);
extern unsigned long __zero_page(void);
#define BAD_PAGETABLE __bad_pagetable()
#define BAD_PAGE __bad_page()
#define ZERO_PAGE(vaddr) (virt_to_page(ZERO_PGE))
/*

27
arch/alpha/mm/init.c
View File

@@ -60,33 +60,6 @@ pgd_alloc(struct mm_struct *mm)
}
/*
* 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 an 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.
*/
pmd_t *
__bad_pagetable(void)
{
memset(absolute_pointer(EMPTY_PGT), 0, PAGE_SIZE);
return (pmd_t *) EMPTY_PGT;
}
pte_t
__bad_page(void)
{
memset(absolute_pointer(EMPTY_PGE), 0, PAGE_SIZE);
return pte_mkdirty(mk_pte(virt_to_page(EMPTY_PGE), PAGE_SHARED));
}
static inline unsigned long
load_PCB(struct pcb_struct *pcb)
{