Replace raw constant 12 with PAGE_SHIFT to fix non-x86 arches and provoke build failure if PAGE_SHIFT is too big
Signed-off-by: Dan Magenheimer <[email protected]> --- drivers/staging/zcache/zbud.c | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/staging/zcache/zbud.c b/drivers/staging/zcache/zbud.c index a7c4361..6835fab 100644 --- a/drivers/staging/zcache/zbud.c +++ b/drivers/staging/zcache/zbud.c @@ -103,8 +103,8 @@ struct zbudpage { struct { unsigned long space_for_flags; struct { - unsigned zbud0_size:12; - unsigned zbud1_size:12; + unsigned zbud0_size: PAGE_SHIFT; + unsigned zbud1_size: PAGE_SHIFT; unsigned unevictable:2; }; struct list_head budlist; @@ -112,6 +112,9 @@ struct zbudpage { }; }; }; +#if (PAGE_SHIFT * 2) + 2 > BITS_PER_LONG +#error "zbud won't work for this arch, PAGE_SIZE is too large" +#endif struct zbudref { union { -- 1.7.1 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
