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| author | Michel Lespinasse <walken@google.com> | 2013-02-27 17:02:51 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-27 19:10:09 -0800 |
| commit | e759a798c639c8bde15c1baa35fb8b451856314b (patch) | |
| tree | d306e4062b51b91fe86835f979ea7ff1c611edbd /arch/frv | |
| parent | 309a85b6861fedbb48a22d45e0e079d1be993b3a (diff) | |
| download | linux-3.10-e759a798c639c8bde15c1baa35fb8b451856314b.tar.gz linux-3.10-e759a798c639c8bde15c1baa35fb8b451856314b.tar.bz2 linux-3.10-e759a798c639c8bde15c1baa35fb8b451856314b.zip | |
mm: use vm_unmapped_area() on frv architecture
Update the frv arch_get_unmapped_area function to make use of
vm_unmapped_area() instead of implementing a brute force search.
Signed-off-by: Michel Lespinasse <walken@google.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/frv')
| -rw-r--r-- | arch/frv/mm/elf-fdpic.c | 49 |
1 files changed, 17 insertions, 32 deletions
diff --git a/arch/frv/mm/elf-fdpic.c b/arch/frv/mm/elf-fdpic.c index 385fd30b142..836f14707a6 100644 --- a/arch/frv/mm/elf-fdpic.c +++ b/arch/frv/mm/elf-fdpic.c @@ -60,7 +60,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi unsigned long pgoff, unsigned long flags) { struct vm_area_struct *vma; - unsigned long limit; + struct vm_unmapped_area_info info; if (len > TASK_SIZE) return -ENOMEM; @@ -79,39 +79,24 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi } /* search between the bottom of user VM and the stack grow area */ - addr = PAGE_SIZE; - limit = (current->mm->start_stack - 0x00200000); - if (addr + len <= limit) { - limit -= len; - - if (addr <= limit) { - vma = find_vma(current->mm, PAGE_SIZE); - for (; vma; vma = vma->vm_next) { - if (addr > limit) - break; - if (addr + len <= vma->vm_start) - goto success; - addr = vma->vm_end; - } - } - } + info.flags = 0; + info.length = len; + info.low_limit = PAGE_SIZE; + info.high_limit = (current->mm->start_stack - 0x00200000); + info.align_mask = 0; + info.align_offset = 0; + addr = vm_unmapped_area(&info); + if (!(addr & ~PAGE_MASK)) + goto success; + VM_BUG_ON(addr != -ENOMEM); /* search from just above the WorkRAM area to the top of memory */ - addr = PAGE_ALIGN(0x80000000); - limit = TASK_SIZE - len; - if (addr <= limit) { - vma = find_vma(current->mm, addr); - for (; vma; vma = vma->vm_next) { - if (addr > limit) - break; - if (addr + len <= vma->vm_start) - goto success; - addr = vma->vm_end; - } - - if (!vma && addr <= limit) - goto success; - } + info.low_limit = PAGE_ALIGN(0x80000000); + info.high_limit = TASK_SIZE; + addr = vm_unmapped_area(&info); + if (!(addr & ~PAGE_MASK)) + goto success; + VM_BUG_ON(addr != -ENOMEM); #if 0 printk("[area] l=%lx (ENOMEM) f='%s'\n", |