diff options
| author | Hugh Dickins <hughd@google.com> | 2018-11-30 14:10:13 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-05 19:41:08 +0100 |
| commit | e12b67d81b08a79994ee9b1484a7e0c4601bfdad (patch) | |
| tree | ff9f9de74b10f5aeb18cb34817688953eda6bdcb /mm/huge_memory.c | |
| parent | 5ff1ad556aad473952c1caca6092aac4517ac1ae (diff) | |
mm/huge_memory: rename freeze_page() to unmap_page()
commit 906f9cdfc2a0800f13683f9e4ebdfd08c12ee81b upstream.
The term "freeze" is used in several ways in the kernel, and in mm it
has the particular meaning of forcing page refcount temporarily to 0.
freeze_page() is just too confusing a name for a function that unmaps a
page: rename it unmap_page(), and rename unfreeze_page() remap_page().
Went to change the mention of freeze_page() added later in mm/rmap.c,
but found it to be incorrect: ordinary page reclaim reaches there too;
but the substance of the comment still seems correct, so edit it down.
Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1811261514080.2275@eggly.anvils
Fixes: e9b61f19858a5 ("thp: reintroduce split_huge_page()")
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <stable@vger.kernel.org> [4.8+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index adacfe66cf3d..09d7e9c4de89 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2280,7 +2280,7 @@ void vma_adjust_trans_huge(struct vm_area_struct *vma, } } -static void freeze_page(struct page *page) +static void unmap_page(struct page *page) { enum ttu_flags ttu_flags = TTU_IGNORE_MLOCK | TTU_IGNORE_ACCESS | TTU_RMAP_LOCKED | TTU_SPLIT_HUGE_PMD; @@ -2295,7 +2295,7 @@ static void freeze_page(struct page *page) VM_BUG_ON_PAGE(!unmap_success, page); } -static void unfreeze_page(struct page *page) +static void remap_page(struct page *page) { int i; if (PageTransHuge(page)) { @@ -2412,7 +2412,7 @@ static void __split_huge_page(struct page *page, struct list_head *list, spin_unlock_irqrestore(zone_lru_lock(page_zone(head)), flags); - unfreeze_page(head); + remap_page(head); for (i = 0; i < HPAGE_PMD_NR; i++) { struct page *subpage = head + i; @@ -2593,7 +2593,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) } /* - * Racy check if we can split the page, before freeze_page() will + * Racy check if we can split the page, before unmap_page() will * split PMDs */ if (!can_split_huge_page(head, &extra_pins)) { @@ -2602,7 +2602,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) } mlocked = PageMlocked(page); - freeze_page(head); + unmap_page(head); VM_BUG_ON_PAGE(compound_mapcount(head), head); /* Make sure the page is not on per-CPU pagevec as it takes pin */ @@ -2659,7 +2659,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) fail: if (mapping) spin_unlock(&mapping->tree_lock); spin_unlock_irqrestore(zone_lru_lock(page_zone(head)), flags); - unfreeze_page(head); + remap_page(head); ret = -EBUSY; } |