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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2007-05-06 14:50:09 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 12:12:56 -0700
commit869e5101728fe2f307f0a3c3cf599c184f81f0ee (patch)
treee8e9f753510b78092407bf4bb8aa9387d315089e
parentafa37394d6bfc91907b0e08c902d36d848232b99 (diff)
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>
-rw-r--r--arch/parisc/kernel/sys_parisc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index 512642d8f707..6fed0803c593 100644
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -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;

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