The patch titled
Subject: hugetlb: rename remove_huge_page to hugetlb_delete_from_page_cache
has been added to the -mm mm-unstable branch. Its filename is
hugetlb-rename-remove_huge_page-to-hugetlb_delete_from_page_cache.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/hugetlb-rename-remove_huge_page-to-hugetlb_delete_from_page_cache.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Subject: hugetlb: rename remove_huge_page to hugetlb_delete_from_page_cache
Date: Wed, 24 Aug 2022 10:57:52 -0700
remove_huge_page removes a hugetlb page from the page cache. Change to
hugetlb_delete_from_page_cache as it is a more descriptive name.
huge_add_to_page_cache is global in scope, but only deals with hugetlb
pages. For consistency and clarity, rename to hugetlb_add_to_page_cache.
Link: https://lkml.kernel.org/r/20220824175757.20590-4-mike.kravetz@xxxxxxxxxx
Signed-off-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Axel Rasmussen <axelrasmussen@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Cc: James Houghton <jthoughton@xxxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Mina Almasry <almasrymina@xxxxxxxxxx>
Cc: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Naoya Horiguchi <naoya.horiguchi@xxxxxxxxx>
Cc: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Cc: Prakash Sangappa <prakash.sangappa@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/hugetlbfs/inode.c | 21 ++++++++++-----------
include/linux/hugetlb.h | 2 +-
mm/hugetlb.c | 8 ++++----
3 files changed, 15 insertions(+), 16 deletions(-)
--- a/fs/hugetlbfs/inode.c~hugetlb-rename-remove_huge_page-to-hugetlb_delete_from_page_cache
+++ a/fs/hugetlbfs/inode.c
@@ -364,7 +364,7 @@ static int hugetlbfs_write_end(struct fi
return -EINVAL;
}
-static void remove_huge_page(struct page *page)
+static void hugetlb_delete_from_page_cache(struct page *page)
{
ClearPageDirty(page);
ClearPageUptodate(page);
@@ -478,15 +478,14 @@ static void remove_inode_hugepages(struc
folio_lock(folio);
/*
* We must free the huge page and remove from page
- * cache (remove_huge_page) BEFORE removing the
- * region/reserve map (hugetlb_unreserve_pages). In
- * rare out of memory conditions, removal of the
- * region/reserve map could fail. Correspondingly,
- * the subpool and global reserve usage count can need
- * to be adjusted.
+ * cache BEFORE removing the * region/reserve map
+ * (hugetlb_unreserve_pages). In rare out of memory
+ * conditions, removal of the region/reserve map could
+ * fail. Correspondingly, the subpool and global
+ * reserve usage count can need to be adjusted.
*/
VM_BUG_ON(HPageRestoreReserve(&folio->page));
- remove_huge_page(&folio->page);
+ hugetlb_delete_from_page_cache(&folio->page);
freed++;
if (!truncate_op) {
if (unlikely(hugetlb_unreserve_pages(inode,
@@ -723,7 +722,7 @@ static long hugetlbfs_fallocate(struct f
}
clear_huge_page(page, addr, pages_per_huge_page(h));
__SetPageUptodate(page);
- error = huge_add_to_page_cache(page, mapping, index);
+ error = hugetlb_add_to_page_cache(page, mapping, index);
if (unlikely(error)) {
restore_reserve_on_error(h, &pseudo_vma, addr, page);
put_page(page);
@@ -735,7 +734,7 @@ static long hugetlbfs_fallocate(struct f
SetHPageMigratable(page);
/*
- * unlock_page because locked by huge_add_to_page_cache()
+ * unlock_page because locked by hugetlb_add_to_page_cache()
* put_page() due to reference from alloc_huge_page()
*/
unlock_page(page);
@@ -980,7 +979,7 @@ static int hugetlbfs_error_remove_page(s
struct inode *inode = mapping->host;
pgoff_t index = page->index;
- remove_huge_page(page);
+ hugetlb_delete_from_page_cache(page);
if (unlikely(hugetlb_unreserve_pages(inode, index, index + 1, 1)))
hugetlb_fix_reserve_counts(inode);
--- a/include/linux/hugetlb.h~hugetlb-rename-remove_huge_page-to-hugetlb_delete_from_page_cache
+++ a/include/linux/hugetlb.h
@@ -665,7 +665,7 @@ struct page *alloc_huge_page_nodemask(st
nodemask_t *nmask, gfp_t gfp_mask);
struct page *alloc_huge_page_vma(struct hstate *h, struct vm_area_struct *vma,
unsigned long address);
-int huge_add_to_page_cache(struct page *page, struct address_space *mapping,
+int hugetlb_add_to_page_cache(struct page *page, struct address_space *mapping,
pgoff_t idx);
void restore_reserve_on_error(struct hstate *h, struct vm_area_struct *vma,
unsigned long address, struct page *page);
--- a/mm/hugetlb.c~hugetlb-rename-remove_huge_page-to-hugetlb_delete_from_page_cache
+++ a/mm/hugetlb.c
@@ -5429,7 +5429,7 @@ static bool hugetlbfs_pagecache_present(
return page != NULL;
}
-int huge_add_to_page_cache(struct page *page, struct address_space *mapping,
+int hugetlb_add_to_page_cache(struct page *page, struct address_space *mapping,
pgoff_t idx)
{
struct folio *folio = page_folio(page);
@@ -5569,7 +5569,7 @@ static vm_fault_t hugetlb_no_page(struct
new_page = true;
if (vma->vm_flags & VM_MAYSHARE) {
- int err = huge_add_to_page_cache(page, mapping, idx);
+ int err = hugetlb_add_to_page_cache(page, mapping, idx);
if (err) {
/*
* err can't be -EEXIST which implies someone
@@ -5984,11 +5984,11 @@ int hugetlb_mcopy_atomic_pte(struct mm_s
/*
* Serialization between remove_inode_hugepages() and
- * huge_add_to_page_cache() below happens through the
+ * hugetlb_add_to_page_cache() below happens through the
* hugetlb_fault_mutex_table that here must be hold by
* the caller.
*/
- ret = huge_add_to_page_cache(page, mapping, idx);
+ ret = hugetlb_add_to_page_cache(page, mapping, idx);
if (ret)
goto out_release_nounlock;
page_in_pagecache = true;
_
Patches currently in -mm which might be from mike.kravetz@xxxxxxxxxx are
hugetlbfs-revert-use-i_mmap_rwsem-to-address-page-fault-truncate-race.patch
hugetlbfs-revert-use-i_mmap_rwsem-for-more-pmd-sharing-synchronization.patch
hugetlb-rename-remove_huge_page-to-hugetlb_delete_from_page_cache.patch
hugetlb-handle-truncate-racing-with-page-faults.patch
hugetlb-rename-vma_shareable-and-refactor-code.patch
hugetlb-add-vma-based-lock-for-pmd-sharing.patch
hugetlb-create-hugetlb_unmap_file_folio-to-unmap-single-file-folio.patch
hugetlb-use-new-vma_lock-for-pmd-sharing-synchronization.patch
