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| author | Chris Metcalf <cmetcalf@tilera.com> | 2010-10-14 15:09:02 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2010-10-14 15:09:02 -0400 |
| commit | bbacff94d0c38163ef01361de006797c92e69e58 (patch) | |
| tree | 3c730c114a450c7cf97cd7841f231eb5f8f1e4da /arch/tile | |
| parent | 6b945df74233386aab526cddd3593ed4b854f574 (diff) | |
| download | lwn-bbacff94d0c38163ef01361de006797c92e69e58.tar.gz lwn-bbacff94d0c38163ef01361de006797c92e69e58.zip | |
arch/tile: provide a definition of MAP_STACK
It's convenient for userspace (in particular, glibc) to find a
definition of MAP_STACK. We use MAP_GROWSDOWN as an alias since
that's appropriate for the main stack, and since our current
allocation of mmap flags bits is running a bit short otherwise.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile')
| -rw-r--r-- | arch/tile/include/asm/mman.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/tile/include/asm/mman.h b/arch/tile/include/asm/mman.h index 4c6811e3e8dc..81b8fc348d63 100644 --- a/arch/tile/include/asm/mman.h +++ b/arch/tile/include/asm/mman.h @@ -23,6 +23,7 @@ #define MAP_POPULATE 0x0040 /* populate (prefault) pagetables */ #define MAP_NONBLOCK 0x0080 /* do not block on IO */ #define MAP_GROWSDOWN 0x0100 /* stack-like segment */ +#define MAP_STACK MAP_GROWSDOWN /* provide convenience alias */ #define MAP_LOCKED 0x0200 /* pages are locked */ #define MAP_NORESERVE 0x0400 /* don't check for reservations */ #define MAP_DENYWRITE 0x0800 /* ETXTBSY */ |