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-rw-r--r--mm/readahead.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/mm/readahead.c b/mm/readahead.c
index 1d1a84deb5..2648ec4f04 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -511,16 +511,14 @@ void page_cache_ra_order(struct readahead_control *ractl,
unsigned int order = new_order;
/* Align with smaller pages if needed */
- if (index & ((1UL << order) - 1)) {
+ if (index & ((1UL << order) - 1))
order = __ffs(index);
- if (order == 1)
- order = 0;
- }
/* Don't allocate pages past EOF */
- while (index + (1UL << order) - 1 > limit) {
- if (--order == 1)
- order = 0;
- }
+ while (index + (1UL << order) - 1 > limit)
+ order--;
+ /* THP machinery does not support order-1 */
+ if (order == 1)
+ order = 0;
err = ra_alloc_folio(ractl, index, mark, order, gfp);
if (err)
break;