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Message-Id: <1587970985-21629-2-git-send-email-alex.shi@linux.alibaba.com>
Date: Mon, 27 Apr 2020 15:02:50 +0800
From: Alex Shi <alex.shi@...ux.alibaba.com>
To: akpm@...ux-foundation.org, mgorman@...hsingularity.net,
tj@...nel.org, hughd@...gle.com, khlebnikov@...dex-team.ru,
daniel.m.jordan@...cle.com, yang.shi@...ux.alibaba.com,
willy@...radead.org, hannes@...xchg.org, lkp@...el.com,
linux-mm@...ck.org, linux-kernel@...r.kernel.org,
cgroups@...r.kernel.org, shakeelb@...gle.com,
iamjoonsoo.kim@....com, richard.weiyang@...il.com
Cc: Alex Shi <alex.shi@...ux.alibaba.com>,
Seth Jennings <sjenning@...hat.com>,
Dan Streetman <ddstreet@...e.org>,
Vitaly Wool <vitaly.wool@...sulko.com>
Subject: [PATCH v10 01/15] mm/swap: use vmf clean up swapin funcs parameters
Folding parameter struct vm_area_struct *vma, unsigned long addr into
struct vm_fault vmf, this makes func path more readble.
Signed-off-by: Alex Shi <alex.shi@...ux.alibaba.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Seth Jennings <sjenning@...hat.com>
Cc: Dan Streetman <ddstreet@...e.org>
Cc: Vitaly Wool <vitaly.wool@...sulko.com>
Cc: linux-kernel@...r.kernel.org
Cc: linux-mm@...ck.org
---
include/linux/swap.h | 6 ++----
mm/madvise.c | 11 +++++++----
mm/swap_state.c | 23 ++++++++++-------------
mm/swapfile.c | 8 +++++---
mm/zswap.c | 3 ++-
5 files changed, 26 insertions(+), 25 deletions(-)
diff --git a/include/linux/swap.h b/include/linux/swap.h
index c453d08e07fb..6ca3adf62fe0 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -417,11 +417,9 @@ extern struct page *lookup_swap_cache(swp_entry_t entry,
struct vm_area_struct *vma,
unsigned long addr);
extern struct page *read_swap_cache_async(swp_entry_t, gfp_t,
- struct vm_area_struct *vma, unsigned long addr,
- bool do_poll);
+ struct vm_fault *vmf, bool do_poll);
extern struct page *__read_swap_cache_async(swp_entry_t, gfp_t,
- struct vm_area_struct *vma, unsigned long addr,
- bool *new_page_allocated);
+ struct vm_fault *vmf, bool *new_page_allocated);
extern struct page *swap_cluster_readahead(swp_entry_t entry, gfp_t flag,
struct vm_fault *vmf);
extern struct page *swapin_readahead(swp_entry_t entry, gfp_t flag,
diff --git a/mm/madvise.c b/mm/madvise.c
index 4bb30ed6c8d2..e9bd80087dbb 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -184,8 +184,8 @@ static int swapin_walk_pmd_entry(pmd_t *pmd, unsigned long start,
unsigned long end, struct mm_walk *walk)
{
pte_t *orig_pte;
- struct vm_area_struct *vma = walk->private;
unsigned long index;
+ struct vm_fault vmf = { .vma = walk->private};
if (pmd_none_or_trans_huge_or_clear_bad(pmd))
return 0;
@@ -196,7 +196,8 @@ static int swapin_walk_pmd_entry(pmd_t *pmd, unsigned long start,
struct page *page;
spinlock_t *ptl;
- orig_pte = pte_offset_map_lock(vma->vm_mm, pmd, start, &ptl);
+ orig_pte = pte_offset_map_lock(vmf.vma->vm_mm,
+ pmd, start, &ptl);
pte = *(orig_pte + ((index - start) / PAGE_SIZE));
pte_unmap_unlock(orig_pte, ptl);
@@ -206,8 +207,9 @@ static int swapin_walk_pmd_entry(pmd_t *pmd, unsigned long start,
if (unlikely(non_swap_entry(entry)))
continue;
+ vmf.address = index;
page = read_swap_cache_async(entry, GFP_HIGHUSER_MOVABLE,
- vma, index, false);
+ &vmf, false);
if (page)
put_page(page);
}
@@ -226,6 +228,7 @@ static void force_shm_swapin_readahead(struct vm_area_struct *vma,
pgoff_t index;
struct page *page;
swp_entry_t swap;
+ struct vm_fault vmf = { .vma = NULL, .address = 0};
for (; start < end; start += PAGE_SIZE) {
index = ((start - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
@@ -238,7 +241,7 @@ static void force_shm_swapin_readahead(struct vm_area_struct *vma,
}
swap = radix_to_swp_entry(page);
page = read_swap_cache_async(swap, GFP_HIGHUSER_MOVABLE,
- NULL, 0, false);
+ &vmf, false);
if (page)
put_page(page);
}
diff --git a/mm/swap_state.c b/mm/swap_state.c
index 26fded65c30d..b056c7ec941f 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -357,11 +357,12 @@ struct page *lookup_swap_cache(swp_entry_t entry, struct vm_area_struct *vma,
}
struct page *__read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
- struct vm_area_struct *vma, unsigned long addr,
- bool *new_page_allocated)
+ struct vm_fault *vmf, bool *new_page_allocated)
{
struct swap_info_struct *si;
struct page *page;
+ struct vm_area_struct *vma = vmf->vma;
+ unsigned long addr = vmf->address;
*new_page_allocated = false;
@@ -453,11 +454,11 @@ struct page *__read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
* the swap entry is no longer in use.
*/
struct page *read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
- struct vm_area_struct *vma, unsigned long addr, bool do_poll)
+ struct vm_fault *vmf, bool do_poll)
{
bool page_was_allocated;
struct page *retpage = __read_swap_cache_async(entry, gfp_mask,
- vma, addr, &page_was_allocated);
+ vmf, &page_was_allocated);
if (page_was_allocated)
swap_readpage(retpage, do_poll);
@@ -554,8 +555,6 @@ struct page *swap_cluster_readahead(swp_entry_t entry, gfp_t gfp_mask,
struct swap_info_struct *si = swp_swap_info(entry);
struct blk_plug plug;
bool do_poll = true, page_allocated;
- struct vm_area_struct *vma = vmf->vma;
- unsigned long addr = vmf->address;
mask = swapin_nr_pages(offset) - 1;
if (!mask)
@@ -582,7 +581,7 @@ struct page *swap_cluster_readahead(swp_entry_t entry, gfp_t gfp_mask,
/* Ok, do the async read-ahead now */
page = __read_swap_cache_async(
swp_entry(swp_type(entry), offset),
- gfp_mask, vma, addr, &page_allocated);
+ gfp_mask, vmf, &page_allocated);
if (!page)
continue;
if (page_allocated) {
@@ -598,7 +597,7 @@ struct page *swap_cluster_readahead(swp_entry_t entry, gfp_t gfp_mask,
lru_add_drain(); /* Push any new pages onto the LRU now */
skip:
- return read_swap_cache_async(entry, gfp_mask, vma, addr, do_poll);
+ return read_swap_cache_async(entry, gfp_mask, vmf, do_poll);
}
int init_swap_address_space(unsigned int type, unsigned long nr_pages)
@@ -730,7 +729,6 @@ static struct page *swap_vma_readahead(swp_entry_t fentry, gfp_t gfp_mask,
struct vm_fault *vmf)
{
struct blk_plug plug;
- struct vm_area_struct *vma = vmf->vma;
struct page *page;
pte_t *pte, pentry;
swp_entry_t entry;
@@ -753,8 +751,8 @@ static struct page *swap_vma_readahead(swp_entry_t fentry, gfp_t gfp_mask,
entry = pte_to_swp_entry(pentry);
if (unlikely(non_swap_entry(entry)))
continue;
- page = __read_swap_cache_async(entry, gfp_mask, vma,
- vmf->address, &page_allocated);
+ page = __read_swap_cache_async(entry, gfp_mask, vmf,
+ &page_allocated);
if (!page)
continue;
if (page_allocated) {
@@ -769,8 +767,7 @@ static struct page *swap_vma_readahead(swp_entry_t fentry, gfp_t gfp_mask,
blk_finish_plug(&plug);
lru_add_drain();
skip:
- return read_swap_cache_async(fentry, gfp_mask, vma, vmf->address,
- ra_info.win == 1);
+ return read_swap_cache_async(fentry, gfp_mask, vmf, ra_info.win == 1);
}
/**
diff --git a/mm/swapfile.c b/mm/swapfile.c
index e41074848f25..0c4d604fbf8d 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1850,12 +1850,14 @@ static inline int pte_same_as_swp(pte_t pte, pte_t swp_pte)
* just let do_wp_page work it out if a write is requested later - to
* force COW, vm_page_prot omits write permission from any private vma.
*/
-static int unuse_pte(struct vm_area_struct *vma, pmd_t *pmd,
- unsigned long addr, swp_entry_t entry, struct page *page)
+static int unuse_pte(struct vm_fault *vmf, swp_entry_t entry, struct page *page)
{
struct page *swapcache;
spinlock_t *ptl;
pte_t *pte;
+ struct vm_area_struct *vma = vmf->vma;
+ unsigned long addr = vmf->address;
+ pmd_t *pmd = vmf->pmd;
int ret = 1;
swapcache = page;
@@ -1938,7 +1940,7 @@ static int unuse_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
lock_page(page);
wait_on_page_writeback(page);
- ret = unuse_pte(vma, pmd, addr, entry, page);
+ ret = unuse_pte(&vmf, entry, page);
if (ret < 0) {
unlock_page(page);
put_page(page);
diff --git a/mm/zswap.c b/mm/zswap.c
index fbb782924ccc..ef5a3fe442d6 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -846,9 +846,10 @@ static int zswap_get_swap_cache_page(swp_entry_t entry,
struct page **retpage)
{
bool page_was_allocated;
+ struct vm_fault vmf = { .vma = NULL, .address = 0};
*retpage = __read_swap_cache_async(entry, GFP_KERNEL,
- NULL, 0, &page_was_allocated);
+ &vmf, &page_was_allocated);
if (page_was_allocated)
return ZSWAP_SWAPCACHE_NEW;
if (!*retpage)
--
1.8.3.1
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