[PATCH 15/16] mm: use vm_unmapped_area() on sparc32 architecture
From: davem@davemloft.net (David Miller)
Date: 2012-11-06 17:41:39
Also in:
linux-mips, linux-mm, linux-sh, lkml, sparclinux
From: Rik van Riel <redacted> Date: Tue, 06 Nov 2012 02:30:07 -0500
On 11/05/2012 08:25 PM, David Miller wrote:quoted
From: Michel Lespinasse <redacted> Date: Mon, 5 Nov 2012 14:47:12 -0800quoted
Update the sparc32 arch_get_unmapped_area function to make use of vm_unmapped_area() instead of implementing a brute force search. Signed-off-by: Michel Lespinasse <redacted>Hmmm...quoted
- if (flags & MAP_SHARED) - addr = COLOUR_ALIGN(addr); - else - addr = PAGE_ALIGN(addr);What part of vm_unmapped_area() is going to duplicate this special aligning logic we need on sparc?That would be this part: +found: + /* We found a suitable gap. Clip it with the original low_limit. */ + if (gap_start < info->low_limit) + gap_start = info->low_limit; + + /* Adjust gap address to the desired alignment */ + gap_start += (info->align_offset - gap_start) & info->align_mask; + + VM_BUG_ON(gap_start + info->length > info->high_limit); + VM_BUG_ON(gap_start + info->length > gap_end); + return gap_start; +}
Ok, now I understand. Works for me: Acked-by: David S. Miller <davem@davemloft.net>