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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 /Documentation/DMA-mapping.txt
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>
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