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Commit 5ca8b91d authored by John David Anglin's avatar John David Anglin Committed by Helge Deller
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parisc: ensure that mmapped shared pages are aligned at SHMLBA addresses 



Signed-off-by: default avatarJohn David Anglin <dave.anglin@bell.net>
Signed-off-by: default avatarHelge Deller <deller@gmx.de>
parent 027f27c4

arch/parisc/kernel/sys_parisc.c

+5 −4
Original line number Diff line number Diff line
@@ -94,11 +94,12 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, 
{

	if (len > TASK_SIZE)

		return -ENOMEM;

	/* Might want to check for cache aliasing issues for MAP_FIXED case

	 * like ARM or MIPS ??? --BenH.

	 */

	if (flags & MAP_FIXED)

	if (flags & MAP_FIXED) {

		if ((flags & MAP_SHARED) &&

		    (addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))

			return -EINVAL;

		return addr;

	}

	if (!addr)

		addr = TASK_UNMAPPED_BASE;