path: root/arch/s390/include
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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2009-03-18 13:27:37 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-03-18 13:28:13 +0100
commit0fb1d9bcbcf701a45835aa150c57ca54ea685bfa (patch)
treea2821e3d10918d4b76e6329da42a45cfbb9f19cd /arch/s390/include
parentf481bfafd36e621d6cbc62d4b25f74811410aef7 (diff)
[S390] make page table upgrade work again
After TASK_SIZE now gives the current size of the address space the upgrade of a 64 bit process from 3 to 4 levels of page table needs to use the arch_mmap_check hook to catch large mmap lengths. The get_unmapped_area* functions need to check for -ENOMEM from the arch_get_unmapped_area*, upgrade the page table and retry. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/s390/include/asm/mman.h b/arch/s390/include/asm/mman.h
index 7839767d837e..da01432e8f44 100644
--- a/arch/s390/include/asm/mman.h
+++ b/arch/s390/include/asm/mman.h
@@ -22,4 +22,9 @@
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
+#if defined(__KERNEL__) && !defined(__ASSEMBLY__) && defined(CONFIG_64BIT)
+int s390_mmap_check(unsigned long addr, unsigned long len);
+#define arch_mmap_check(addr,len,flags) s390_mmap_check(addr,len)
#endif /* __S390_MMAN_H__ */

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