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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 13:27:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 13:27:05 -0700 |
| commit | b9d7ccf56be1ac77b71a284a1c0e6337f9a7aff0 (patch) | |
| tree | 6440e1c679e097d0ea23bf879cd30983c5838419 /mm/vmalloc.c | |
| parent | 9301975ec251bab1ad7cfcb84a688b26187e4e4a (diff) | |
| parent | 3038edabf48f01421c621cb77a712b446d3a5d67 (diff) | |
| download | linux-b9d7ccf56be1ac77b71a284a1c0e6337f9a7aff0.tar.bz2 | |
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86 ACPI: fix breakage of resume on 64-bit UP systems with SMP kernel
Introduce is_vmalloc_or_module_addr() and use with DEBUG_VIRTUAL
Diffstat (limited to 'mm/vmalloc.c')
| -rw-r--r-- | mm/vmalloc.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 712ae47af0bf..0797589d51f8 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -175,6 +175,21 @@ static int vmap_page_range(unsigned long addr, unsigned long end, return nr; } +static inline int is_vmalloc_or_module_addr(const void *x) +{ + /* + * x86-64 and sparc64 put modules in a special place, + * and fall back on vmalloc() if that fails. Others + * just put it in the vmalloc space. + */ +#if defined(CONFIG_MODULES) && defined(MODULES_VADDR) + unsigned long addr = (unsigned long)x; + if (addr >= MODULES_VADDR && addr < MODULES_END) + return 1; +#endif + return is_vmalloc_addr(x); +} + /* * Walk a vmap address to the struct page it maps. */ @@ -188,8 +203,7 @@ struct page *vmalloc_to_page(const void *vmalloc_addr) * XXX we might need to change this if we add VIRTUAL_BUG_ON for * architectures that do not vmalloc module space */ - VIRTUAL_BUG_ON(!is_vmalloc_addr(vmalloc_addr) && - !is_module_address(addr)); + VIRTUAL_BUG_ON(!is_vmalloc_or_module_addr(vmalloc_addr)); if (!pgd_none(*pgd)) { pud_t *pud = pud_offset(pgd, addr); |