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get_unmapped_area handles MAP_FIXED on parisc 

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>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: Matthew Wilcox <willy@debian.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Benjamin Herrenschmidt 2007-05-06 14:50:09 -07:00 committed by Linus Torvalds
parent afa37394d6
commit 869e510172
1 changed files with 5 additions and 0 deletions
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5
arch/parisc/kernel/sys_parisc.c
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@ -106,6 +106,11 @@ 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)
return addr;
if (!addr)
addr = TASK_UNMAPPED_BASE;