The same problem on MIPS. Perhaps this can help: $ git diff diff --git a/fs/compat.c b/fs/compat.c index ff66c0d..c580c32 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -49,6 +49,7 @@ #include <linux/eventpoll.h> #include <linux/fs_struct.h> #include <linux/slab.h> +#include <linux/pagemap.h> #include <asm/uaccess.h> #include <asm/mmu_context.h> I'm not sure if this is a good fixup, because the problem is introduced by MAX_RW_COUNT defined in include/linux/fs.h: #define MAX_RW_COUNT (INT_MAX & PAGE_CACHE_MASK) and the PAGE_CACHE_MASK is defined in pagemap.h, we may be possible to add <linux/pagemap.h> in include/linux/fs.h but pagemap.h has included <linux/fs.h> too ... Regards, Wu Zhangjin On Sat, Oct 30, 2010 at 3:26 PM, Sachin Sant <sachinp@xxxxxxxxxx> wrote: > Latest 2.6.36 git [commit 44234d0c46...] fails to build on s390x with > following error : > > fs/compat.c: In function compat_rw_copy_check_uvector: > fs/compat.c:631: error: PAGE_CACHE_MASK undeclared (first use in this > function) > fs/compat.c:631: error: (Each undeclared identifier is reported only once > fs/compat.c:631: error: for each function it appears in.) > make[1]: *** [fs/compat.o] Error 1 > > The code in question was added via following commit: > > commit 435f49a518c78eec8e2edbbadd912737246cbe20 > readv/writev: do the same MAX_RW_COUNT truncation that read/write does > > Thanks > -Sachin
