linux-kernel - [PATCH] mm/shmem: remove unneeded assignments in shmem_get_folio

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Date:   Fri,  7 Oct 2022 10:50:27 +0200
From:   Lukas Bulwahn <lukas.bulwahn@...il.com>
To:     Matthew Wilcox <willy@...radead.org>,
        Hugh Dickins <hughd@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
        Lukas Bulwahn <lukas.bulwahn@...il.com>
Subject: [PATCH] mm/shmem: remove unneeded assignments in shmem_get_folio_gfp()

After the rework of shmem_get_folio_gfp() to use a folio, the local
variable hindex is only needed to be set once before passing it to
shmem_add_to_page_cache().

Remove the unneeded initialization and assignments of the variable hindex
before the actual effective assignment and first use.

No functional change. No change in object code.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@...il.com>
---
 mm/shmem.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index 8280a5cb48df..5577c3e72e0f 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1833,7 +1833,7 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
 	struct shmem_sb_info *sbinfo;
 	struct mm_struct *charge_mm;
 	struct folio *folio;
-	pgoff_t hindex = index;
+	pgoff_t hindex;
 	gfp_t huge_gfp;
 	int error;
 	int once = 0;
@@ -1871,7 +1871,6 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
 	}
 
 	if (folio) {
-		hindex = folio->index;
 		if (sgp == SGP_WRITE)
 			folio_mark_accessed(folio);
 		if (folio_test_uptodate(folio))
-- 
2.17.1