[PATCH 7/12] get_unmapped_area handles MAP_FIXED on parisc

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

Handle MAP_FIXED in parisc arch_get_unmapped_area(), just return the
address. We might want to also check for possible cache aliasing
issues now that we get called in that case (like ARM or MIPS),
leave a comment for the maintainers to pick up.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

 arch/parisc/kernel/sys_parisc.c |    5 +++++
 1 file changed, 5 insertions(+)

Index: linux-cell/arch/parisc/kernel/sys_parisc.c
===================================================================
--- linux-cell.orig/arch/parisc/kernel/sys_parisc.c	2007-03-22 15:28:05.000000000 +1100
+++ linux-cell/arch/parisc/kernel/sys_parisc.c	2007-03-22 15:29:08.000000000 +1100
@@ -106,6 +106,11 @@ unsigned long arch_get_unmapped_area(str
 {
 	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)
+		return addr;
 	if (!addr)
 		addr = TASK_UNMAPPED_BASE;
 
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