| Message ID | 20160915115523.29737-20-kirill.shutemov@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/include/linux/bio.h b/include/linux/bio.h index 23ddf4b46a9b..ebf4f312a642 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -40,7 +40,11 @@ #define BIO_BUG_ON #endif +#ifdef CONFIG_TRANSPARENT_HUGE_PAGECACHE +#define BIO_MAX_PAGES (HPAGE_PMD_NR > 256 ? HPAGE_PMD_NR : 256) +#else #define BIO_MAX_PAGES 256 +#endif #define bio_prio(bio) (bio)->bi_ioprio #define bio_set_prio(bio, prio) ((bio)->bi_ioprio = prio)
We are going to do IO a huge page a time. So we need BIO_MAX_PAGES to be at least HPAGE_PMD_NR. For x86-64, it's 512 pages. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> --- include/linux/bio.h | 4 ++++ 1 file changed, 4 insertions(+)