diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-03-19 09:47:30 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-03-19 09:47:30 +0100 |
| commit | 0d4a42f6bd298e826620585e766a154ab460617a (patch) | |
| tree | 406d8f7778691d858dbe3e48e4bbb10e99c0a58a /arch/ia64/kernel/sys_ia64.c | |
| parent | d62b4892f3d9f7dd2002e5309be10719d6805b0f (diff) | |
| parent | a937536b868b8369b98967929045f1df54234323 (diff) | |
Merge tag 'v3.9-rc3' into drm-intel-next-queued
Backmerge so that I can merge Imre Deak's coalesced sg entries fixes,
which depend upon the new for_each_sg_page introduce in
commit a321e91b6d73ed011ffceed384c40d2785cf723b
Author: Imre Deak <imre.deak@intel.com>
Date: Wed Feb 27 17:02:56 2013 -0800
lib/scatterlist: add simple page iterator
The merge itself is just two trivial conflicts:
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'arch/ia64/kernel/sys_ia64.c')
| -rw-r--r-- | arch/ia64/kernel/sys_ia64.c | 37 |
1 files changed, 12 insertions, 25 deletions
diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c index d9439ef2f661..41e33f84c185 100644 --- a/arch/ia64/kernel/sys_ia64.c +++ b/arch/ia64/kernel/sys_ia64.c @@ -25,9 +25,9 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len unsigned long pgoff, unsigned long flags) { long map_shared = (flags & MAP_SHARED); - unsigned long start_addr, align_mask = PAGE_SIZE - 1; + unsigned long align_mask = 0; struct mm_struct *mm = current->mm; - struct vm_area_struct *vma; + struct vm_unmapped_area_info info; if (len > RGN_MAP_LIMIT) return -ENOMEM; @@ -44,7 +44,7 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len addr = 0; #endif if (!addr) - addr = mm->free_area_cache; + addr = TASK_UNMAPPED_BASE; if (map_shared && (TASK_SIZE > 0xfffffffful)) /* @@ -53,28 +53,15 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len * tasks, we prefer to avoid exhausting the address space too quickly by * limiting alignment to a single page. */ - align_mask = SHMLBA - 1; - - full_search: - start_addr = addr = (addr + align_mask) & ~align_mask; - - for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { - /* At this point: (!vma || addr < vma->vm_end). */ - if (TASK_SIZE - len < addr || RGN_MAP_LIMIT - len < REGION_OFFSET(addr)) { - if (start_addr != TASK_UNMAPPED_BASE) { - /* Start a new search --- just in case we missed some holes. */ - addr = TASK_UNMAPPED_BASE; - goto full_search; - } - return -ENOMEM; - } - if (!vma || addr + len <= vma->vm_start) { - /* Remember the address where we stopped this search: */ - mm->free_area_cache = addr + len; - return addr; - } - addr = (vma->vm_end + align_mask) & ~align_mask; - } + align_mask = PAGE_MASK & (SHMLBA - 1); + + info.flags = 0; + info.length = len; + info.low_limit = addr; + info.high_limit = TASK_SIZE; + info.align_mask = align_mask; + info.align_offset = 0; + return vm_unmapped_area(&info); } asmlinkage long |