linux-kernel - [PATCH 2/8] shmem: remove vma arg from shmem_get_folio

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Date:   Fri, 29 Sep 2023 20:26:53 -0700 (PDT)
From:   Hugh Dickins <hughd@...gle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
cc:     Christian Brauner <brauner@...nel.org>,
        Carlos Maiolino <cem@...nel.org>,
        Chuck Lever <chuck.lever@...cle.com>, Jan Kara <jack@...e.cz>,
        Matthew Wilcox <willy@...radead.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org
Subject: [PATCH 2/8] shmem: remove vma arg from shmem_get_folio_gfp()

The vma is already there in vmf->vma, so no need for a separate arg.

Signed-off-by: Hugh Dickins <hughd@...gle.com>
---
 mm/shmem.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index 69595d341882..824eb55671d2 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1921,14 +1921,13 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index,
  * vm. If we swap it in we mark it dirty since we also free the swap
  * entry since a page cannot live in both the swap and page cache.
  *
- * vma, vmf, and fault_type are only supplied by shmem_fault:
- * otherwise they are NULL.
+ * vmf and fault_type are only supplied by shmem_fault: otherwise they are NULL.
  */
 static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index,
 		struct folio **foliop, enum sgp_type sgp, gfp_t gfp,
-		struct vm_area_struct *vma, struct vm_fault *vmf,
-		vm_fault_t *fault_type)
+		struct vm_fault *vmf, vm_fault_t *fault_type)
 {
+	struct vm_area_struct *vma = vmf ? vmf->vma : NULL;
 	struct address_space *mapping = inode->i_mapping;
 	struct shmem_inode_info *info = SHMEM_I(inode);
 	struct shmem_sb_info *sbinfo;
@@ -2141,7 +2140,7 @@ int shmem_get_folio(struct inode *inode, pgoff_t index, struct folio **foliop,
 		enum sgp_type sgp)
 {
 	return shmem_get_folio_gfp(inode, index, foliop, sgp,
-			mapping_gfp_mask(inode->i_mapping), NULL, NULL, NULL);
+			mapping_gfp_mask(inode->i_mapping), NULL, NULL);
 }
 
 /*
@@ -2225,7 +2224,7 @@ static vm_fault_t shmem_fault(struct vm_fault *vmf)
 	}
 
 	err = shmem_get_folio_gfp(inode, vmf->pgoff, &folio, SGP_CACHE,
-				  gfp, vma, vmf, &ret);
+				  gfp, vmf, &ret);
 	if (err)
 		return vmf_error(err);
 	if (folio)
@@ -4897,7 +4896,7 @@ struct folio *shmem_read_folio_gfp(struct address_space *mapping,
 
 	BUG_ON(!shmem_mapping(mapping));
 	error = shmem_get_folio_gfp(inode, index, &folio, SGP_CACHE,
-				  gfp, NULL, NULL, NULL);
+				    gfp, NULL, NULL);
 	if (error)
 		return ERR_PTR(error);
 
-- 
2.35.3