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hugetlb: rename remove_huge_page to hugetlb_delete_from_page_cache

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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/20220914221810.95771-4-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: James Houghton <jthoughton@google.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Prakash Sangappa <prakash.sangappa@oracle.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Mike Kravetz 2022-09-14 15:18:04 -07:00 committed by Andrew Morton
parent 3a47c54f09
commit 7e1813d48d
3 changed files with 15 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
fs/hugetlbfs/inode.c
View File

@ -364,7 +364,7 @@ static int hugetlbfs_write_end(struct file *file, struct address_space *mapping,
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(struct inode *inode, loff_t lstart,
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 file *file, int mode, loff_t offset,
}
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 file *file, int mode, loff_t offset,
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(struct address_space *mapping,
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);

2
include/linux/hugetlb.h
View File

@ -666,7 +666,7 @@ struct page *alloc_huge_page_nodemask(struct hstate *h, int preferred_nid,
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);

8
mm/hugetlb.c
View File

@ -5430,7 +5430,7 @@ static bool hugetlbfs_pagecache_present(struct hstate *h,
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 mm_struct *mm,
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
@ -5981,11 +5981,11 @@ int hugetlb_mcopy_atomic_pte(struct mm_struct *dst_mm,
/*
* 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;