i would like to increase the page cache size for some
cramfs-compression-performance tests (i386)
does anyone know the right way to do that??
PAGE_SIZE is defined in asm/page.h as (1UL << PAGE_SHIFT)
PAGE_SHIFT for i386 is 12, so PAGE_SIZE is 4096
in linux/pagemap.h PAGE_CACHE_SIZE is defined as PAGE_SHIFT.
so that is what i've tried in order to get a page cache size of
- let's say 8192 in linux/pagemap.h:
original version:
#define PAGE_CACHE_SHIFT PAGE_SHIFT
#define PAGE_CACHE_SIZE PAGE_SIZE
#define PAGE_CACHE_MASK PAGE_MASK
...
my try:
#define PAGE_CACHE_SHIFT 13
#define PAGE_CACHE_SIZE (1UL << PAGE_CACHE_SHIFT)
#define PAGE_CACHE_MASK (~(PAGE_CACHE_SIZE-1))
after rebuilding the kernel and rebooting the system
hangs after mounting root(ext2).
any hints ???
thx a lot,
Nob,
