From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx177.postini.com [74.125.245.177]) by kanga.kvack.org (Postfix) with SMTP id 522C66B0072 for ; Tue, 8 Jan 2013 20:28:33 -0500 (EST) Received: by mail-pa0-f53.google.com with SMTP id hz1so682642pad.26 for ; Tue, 08 Jan 2013 17:28:32 -0800 (PST) From: Michel Lespinasse Subject: [PATCH 3/8] mm: use vm_unmapped_area() on frv architecture Date: Tue, 8 Jan 2013 17:28:10 -0800 Message-Id: <1357694895-520-4-git-send-email-walken@google.com> In-Reply-To: <1357694895-520-1-git-send-email-walken@google.com> References: <1357694895-520-1-git-send-email-walken@google.com> Sender: owner-linux-mm@kvack.org List-ID: To: Rik van Riel , Benjamin Herrenschmidt , "James E.J. Bottomley" , Matt Turner , David Howells , Tony Luck Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org 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 --- 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 385fd30b142f..836f14707a62 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", -- 1.7.7.3 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org