Use __getpagesize and __ffs in MMAP2_PAGE_SHIFT == -1 case of mmap64.
This commit is contained in:
parent
b31469d0d4
commit
42c8fdd8f1
|
@ -1,3 +1,9 @@
|
||||||
|
2013-08-20 Joseph Myers <joseph@codesourcery.com>
|
||||||
|
|
||||||
|
* sysdeps/unix/sysv/linux/mmap64.c (__mmap64)
|
||||||
|
[MMAP2_PAGE_SHIFT == -1]: Use __getpagesize to determine page
|
||||||
|
size. Use __ffs to determine corresponding shift.
|
||||||
|
|
||||||
2013-08-20 Joseph Myers <joseph@codesourcery.com>
|
2013-08-20 Joseph Myers <joseph@codesourcery.com>
|
||||||
Roland McGrath <roland@hack.frob.com>
|
Roland McGrath <roland@hack.frob.com>
|
||||||
|
|
||||||
|
|
|
@ -42,9 +42,8 @@ __mmap64 (void *addr, size_t len, int prot, int flags, int fd, off64_t offset)
|
||||||
#if MMAP2_PAGE_SHIFT == -1
|
#if MMAP2_PAGE_SHIFT == -1
|
||||||
if (page_shift == 0)
|
if (page_shift == 0)
|
||||||
{
|
{
|
||||||
int page_size = getpagesize ();
|
int page_size = __getpagesize ();
|
||||||
while ((1 << ++page_shift) != page_size)
|
page_shift = __ffs (page_size) - 1;
|
||||||
;
|
|
||||||
}
|
}
|
||||||
#endif
|
#endif
|
||||||
if (offset & ((1 << page_shift) - 1))
|
if (offset & ((1 << page_shift) - 1))
|
||||||
|
|
Loading…
Reference in New Issue