hugetlb: rename remove_huge_page to hugetlb_delete_from_page_cache

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>

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index dfb735a..edd69cc 100644 (file)
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -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);
 

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 6d7f397..4893d6d 100644 (file)
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -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);

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 8283706..accb166 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -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;