linux-kernel - [RFC PATCH 03/39] mm: hugetlb: Remove unnecessary check for avoid

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Message-ID: <5a5e998e8f154c28a28dcdab73fb563f658f2f51.1726009989.git.ackerleytng@google.com>
Date: Tue, 10 Sep 2024 23:43:34 +0000
From: Ackerley Tng <ackerleytng@...gle.com>
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Subject: [RFC PATCH 03/39] mm: hugetlb: Remove unnecessary check for avoid_reserve

If avoid_reserve is true, gbl_chg is not used anyway, so there is no
point in setting gbl_chg.

Signed-off-by: Ackerley Tng <ackerleytng@...gle.com>
---
 mm/hugetlb.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 597102ed224b..5cf7fb117e9d 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3166,16 +3166,6 @@ struct folio *alloc_hugetlb_folio(struct vm_area_struct *vma,
 		if (gbl_chg < 0)
 			goto out_end_reservation;
 
-		/*
-		 * Even though there was no reservation in the region/reserve
-		 * map, there could be reservations associated with the
-		 * subpool that can be used.  This would be indicated if the
-		 * return value of hugepage_subpool_get_pages() is zero.
-		 * However, if avoid_reserve is specified we still avoid even
-		 * the subpool reservations.
-		 */
-		if (avoid_reserve)
-			gbl_chg = 1;
 	}
 
 	/* If this allocation is not consuming a reservation, charge it now.
-- 
2.46.0.598.g6f2099f65c-goog