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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-16 19:03:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-16 19:03:06 -0700
commit16d8775700f1815076f879719ce14b33f50a3171 (patch)
tree8525e6e6f12b6acf7cf2746853cc65549f3dbf4c /arch/arm/mm/vmregion.c
parente34551339a195aa548eaf698523714a8fe7f1984 (diff)
parent05e34754518b6a90d5c392790c032575fab12d66 (diff)
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (91 commits) ARM: 6806/1: irq: introduce entry and exit functions for chained handlers ARM: 6781/1: Thumb-2: Work around buggy Thumb-2 short branch relocations in gas ARM: 6747/1: P2V: Thumb2 support ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump ARM: 6796/1: Footbridge: Fix I/O mappings for NOMMU mode ARM: 6784/1: errata: no automatic Store Buffer drain on Cortex-A9 ARM: 6772/1: errata: possible fault MMU translations following an ASID switch ARM: 6776/1: mach-ux500: activate fix for errata 753970 ARM: 6794/1: SPEAr: Append UL to device address macros. ARM: 6793/1: SPEAr: Remove unused *_SIZE macros from spear*.h files ARM: 6792/1: SPEAr: Replace SIZE macro's with SZ_4K macros ARM: 6791/1: SPEAr3xx: Declare device structures after shirq code ARM: 6790/1: SPEAr: Clock Framework: Rename usbd clock and align apb_clk entry ARM: 6789/1: SPEAr3xx: Rename sdio to sdhci ARM: 6788/1: SPEAr: Include mach/hardware.h instead of mach/spear.h ARM: 6787/1: SPEAr: Reorder #includes in .h & .c files. ARM: 6681/1: SPEAr: add debugfs support to clk API ARM: 6703/1: SPEAr: update clk API support ARM: 6679/1: SPEAr: make clk API functions more generic ARM: 6737/1: SPEAr: formalized timer support ...
Diffstat (limited to 'arch/arm/mm/vmregion.c')
-rw-r--r--arch/arm/mm/vmregion.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/arch/arm/mm/vmregion.c b/arch/arm/mm/vmregion.c
index 935993e1b1e..036fdbfdd62 100644
--- a/arch/arm/mm/vmregion.c
+++ b/arch/arm/mm/vmregion.c
@@ -38,7 +38,7 @@ struct arm_vmregion *
arm_vmregion_alloc(struct arm_vmregion_head *head, size_t align,
size_t size, gfp_t gfp)
{
- unsigned long addr = head->vm_start, end = head->vm_end - size;
+ unsigned long start = head->vm_start, addr = head->vm_end;
unsigned long flags;
struct arm_vmregion *c, *new;
@@ -54,21 +54,20 @@ arm_vmregion_alloc(struct arm_vmregion_head *head, size_t align,
spin_lock_irqsave(&head->vm_lock, flags);
- list_for_each_entry(c, &head->vm_list, vm_list) {
- if ((addr + size) < addr)
- goto nospc;
- if ((addr + size) <= c->vm_start)
+ addr = rounddown(addr - size, align);
+ list_for_each_entry_reverse(c, &head->vm_list, vm_list) {
+ if (addr >= c->vm_end)
goto found;
- addr = ALIGN(c->vm_end, align);
- if (addr > end)
+ addr = rounddown(c->vm_start - size, align);
+ if (addr < start)
goto nospc;
}
found:
/*
- * Insert this entry _before_ the one we found.
+ * Insert this entry after the one we found.
*/
- list_add_tail(&new->vm_list, &c->vm_list);
+ list_add(&new->vm_list, &c->vm_list);
new->vm_start = addr;
new->vm_end = addr + size;
new->vm_active = 1;