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Diffstat (limited to 'mm')
-rw-r--r--mm/backing-dev.c14
-rw-r--r--mm/filemap.c4
-rw-r--r--mm/memcontrol.c2
-rw-r--r--mm/memory-failure.c2
-rw-r--r--mm/migrate.c2
-rw-r--r--mm/mmap.c2
-rw-r--r--mm/page-writeback.c18
-rw-r--r--mm/page_io.c18
-rw-r--r--mm/swapfile.c49
9 files changed, 58 insertions, 53 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 8e8b00627bb2..408d5051d05b 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -14,9 +14,7 @@
#include <linux/device.h>
#include <trace/events/writeback.h>
-struct backing_dev_info noop_backing_dev_info = {
- .capabilities = BDI_CAP_NO_ACCT_AND_WRITEBACK,
-};
+struct backing_dev_info noop_backing_dev_info;
EXPORT_SYMBOL_GPL(noop_backing_dev_info);
static struct class *bdi_class;
@@ -204,10 +202,9 @@ static ssize_t stable_pages_required_show(struct device *dev,
struct device_attribute *attr,
char *page)
{
- struct backing_dev_info *bdi = dev_get_drvdata(dev);
-
- return snprintf(page, PAGE_SIZE-1, "%d\n",
- bdi_cap_stable_pages_required(bdi) ? 1 : 0);
+ dev_warn_once(dev,
+ "the stable_pages_required attribute has been removed. Use the stable_writes queue attribute instead.\n");
+ return snprintf(page, PAGE_SIZE-1, "%d\n", 0);
}
static DEVICE_ATTR_RO(stable_pages_required);
@@ -746,6 +743,9 @@ struct backing_dev_info *bdi_alloc(int node_id)
kfree(bdi);
return NULL;
}
+ bdi->capabilities = BDI_CAP_WRITEBACK | BDI_CAP_WRITEBACK_ACCT;
+ bdi->ra_pages = VM_READAHEAD_PAGES;
+ bdi->io_pages = VM_READAHEAD_PAGES;
return bdi;
}
EXPORT_SYMBOL(bdi_alloc);
diff --git a/mm/filemap.c b/mm/filemap.c
index 99c49eeae71b..748b7b1b4f6d 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -414,7 +414,7 @@ int __filemap_fdatawrite_range(struct address_space *mapping, loff_t start,
.range_end = end,
};
- if (!mapping_cap_writeback_dirty(mapping) ||
+ if (!mapping_can_writeback(mapping) ||
!mapping_tagged(mapping, PAGECACHE_TAG_DIRTY))
return 0;
@@ -1800,7 +1800,7 @@ repeat:
no_page:
if (!page && (fgp_flags & FGP_CREAT)) {
int err;
- if ((fgp_flags & FGP_WRITE) && mapping_cap_account_dirty(mapping))
+ if ((fgp_flags & FGP_WRITE) && mapping_can_writeback(mapping))
gfp_mask |= __GFP_WRITE;
if (fgp_flags & FGP_NOFS)
gfp_mask &= ~__GFP_FS;
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 6877c765b8d0..5c1983c84395 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5643,7 +5643,7 @@ static int mem_cgroup_move_account(struct page *page,
if (PageDirty(page)) {
struct address_space *mapping = page_mapping(page);
- if (mapping_cap_account_dirty(mapping)) {
+ if (mapping_can_writeback(mapping)) {
__mod_lruvec_state(from_vec, NR_FILE_DIRTY,
-nr_pages);
__mod_lruvec_state(to_vec, NR_FILE_DIRTY,
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index f1aa6433f404..a1e73943445e 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1006,7 +1006,7 @@ static bool hwpoison_user_mappings(struct page *p, unsigned long pfn,
*/
mapping = page_mapping(hpage);
if (!(flags & MF_MUST_KILL) && !PageDirty(hpage) && mapping &&
- mapping_cap_writeback_dirty(mapping)) {
+ mapping_can_writeback(mapping)) {
if (page_mkclean(hpage)) {
SetPageDirty(hpage);
} else {
diff --git a/mm/migrate.c b/mm/migrate.c
index 04a98bb2f568..4de11dfd730b 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -503,7 +503,7 @@ int migrate_page_move_mapping(struct address_space *mapping,
__dec_lruvec_state(old_lruvec, NR_SHMEM);
__inc_lruvec_state(new_lruvec, NR_SHMEM);
}
- if (dirty && mapping_cap_account_dirty(mapping)) {
+ if (dirty && mapping_can_writeback(mapping)) {
__dec_node_state(oldzone->zone_pgdat, NR_FILE_DIRTY);
__dec_zone_state(oldzone, NR_ZONE_WRITE_PENDING);
__inc_node_state(newzone->zone_pgdat, NR_FILE_DIRTY);
diff --git a/mm/mmap.c b/mm/mmap.c
index f793eb72a060..e71d2d471416 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1666,7 +1666,7 @@ int vma_wants_writenotify(struct vm_area_struct *vma, pgprot_t vm_page_prot)
/* Can the mapping track the dirty pages? */
return vma->vm_file && vma->vm_file->f_mapping &&
- mapping_cap_account_dirty(vma->vm_file->f_mapping);
+ mapping_can_writeback(vma->vm_file->f_mapping);
}
/*
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 4e4ddd67b71e..358d6f28c627 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1882,7 +1882,7 @@ void balance_dirty_pages_ratelimited(struct address_space *mapping)
int ratelimit;
int *p;
- if (!bdi_cap_account_dirty(bdi))
+ if (!(bdi->capabilities & BDI_CAP_WRITEBACK))
return;
if (inode_cgwb_enabled(inode))
@@ -2423,7 +2423,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping)
trace_writeback_dirty_page(page, mapping);
- if (mapping_cap_account_dirty(mapping)) {
+ if (mapping_can_writeback(mapping)) {
struct bdi_writeback *wb;
inode_attach_wb(inode, page);
@@ -2450,7 +2450,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping)
void account_page_cleaned(struct page *page, struct address_space *mapping,
struct bdi_writeback *wb)
{
- if (mapping_cap_account_dirty(mapping)) {
+ if (mapping_can_writeback(mapping)) {
dec_lruvec_page_state(page, NR_FILE_DIRTY);
dec_zone_page_state(page, NR_ZONE_WRITE_PENDING);
dec_wb_stat(wb, WB_RECLAIMABLE);
@@ -2513,7 +2513,7 @@ void account_page_redirty(struct page *page)
{
struct address_space *mapping = page->mapping;
- if (mapping && mapping_cap_account_dirty(mapping)) {
+ if (mapping && mapping_can_writeback(mapping)) {
struct inode *inode = mapping->host;
struct bdi_writeback *wb;
struct wb_lock_cookie cookie = {};
@@ -2625,7 +2625,7 @@ void __cancel_dirty_page(struct page *page)
{
struct address_space *mapping = page_mapping(page);
- if (mapping_cap_account_dirty(mapping)) {
+ if (mapping_can_writeback(mapping)) {
struct inode *inode = mapping->host;
struct bdi_writeback *wb;
struct wb_lock_cookie cookie = {};
@@ -2665,7 +2665,7 @@ int clear_page_dirty_for_io(struct page *page)
VM_BUG_ON_PAGE(!PageLocked(page), page);
- if (mapping && mapping_cap_account_dirty(mapping)) {
+ if (mapping && mapping_can_writeback(mapping)) {
struct inode *inode = mapping->host;
struct bdi_writeback *wb;
struct wb_lock_cookie cookie = {};
@@ -2738,7 +2738,7 @@ int test_clear_page_writeback(struct page *page)
if (ret) {
__xa_clear_mark(&mapping->i_pages, page_index(page),
PAGECACHE_TAG_WRITEBACK);
- if (bdi_cap_account_writeback(bdi)) {
+ if (bdi->capabilities & BDI_CAP_WRITEBACK_ACCT) {
struct bdi_writeback *wb = inode_to_wb(inode);
dec_wb_stat(wb, WB_WRITEBACK);
@@ -2791,7 +2791,7 @@ int __test_set_page_writeback(struct page *page, bool keep_write)
PAGECACHE_TAG_WRITEBACK);
xas_set_mark(&xas, PAGECACHE_TAG_WRITEBACK);
- if (bdi_cap_account_writeback(bdi))
+ if (bdi->capabilities & BDI_CAP_WRITEBACK_ACCT)
inc_wb_stat(inode_to_wb(inode), WB_WRITEBACK);
/*
@@ -2849,7 +2849,7 @@ EXPORT_SYMBOL_GPL(wait_on_page_writeback);
*/
void wait_for_stable_page(struct page *page)
{
- if (bdi_cap_stable_pages_required(inode_to_bdi(page->mapping->host)))
+ if (page->mapping->host->i_sb->s_iflags & SB_I_STABLE_WRITES)
wait_on_page_writeback(page);
}
EXPORT_SYMBOL_GPL(wait_for_stable_page);
diff --git a/mm/page_io.c b/mm/page_io.c
index 4ca28aad0d94..f9e9267f296f 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -413,15 +413,17 @@ int swap_readpage(struct page *page, bool synchronous)
goto out;
}
- ret = bdev_read_page(sis->bdev, swap_page_sector(page), page);
- if (!ret) {
- if (trylock_page(page)) {
- swap_slot_free_notify(page);
- unlock_page(page);
- }
+ if (sis->flags & SWP_SYNCHRONOUS_IO) {
+ ret = bdev_read_page(sis->bdev, swap_page_sector(page), page);
+ if (!ret) {
+ if (trylock_page(page)) {
+ swap_slot_free_notify(page);
+ unlock_page(page);
+ }
- count_vm_event(PSWPIN);
- goto out;
+ count_vm_event(PSWPIN);
+ goto out;
+ }
}
ret = 0;
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 4951f5339a2f..ced4635d924c 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1802,13 +1802,12 @@ int free_swap_and_cache(swp_entry_t entry)
*
* This is needed for the suspend to disk (aka swsusp).
*/
-int swap_type_of(dev_t device, sector_t offset, struct block_device **bdev_p)
+int swap_type_of(dev_t device, sector_t offset)
{
- struct block_device *bdev = NULL;
int type;
- if (device)
- bdev = bdget(device);
+ if (!device)
+ return -1;
spin_lock(&swap_lock);
for (type = 0; type < nr_swapfiles; type++) {
@@ -1817,30 +1816,34 @@ int swap_type_of(dev_t device, sector_t offset, struct block_device **bdev_p)
if (!(sis->flags & SWP_WRITEOK))
continue;
- if (!bdev) {
- if (bdev_p)
- *bdev_p = bdgrab(sis->bdev);
-
- spin_unlock(&swap_lock);
- return type;
- }
- if (bdev == sis->bdev) {
+ if (device == sis->bdev->bd_dev) {
struct swap_extent *se = first_se(sis);
if (se->start_block == offset) {
- if (bdev_p)
- *bdev_p = bdgrab(sis->bdev);
-
spin_unlock(&swap_lock);
- bdput(bdev);
return type;
}
}
}
spin_unlock(&swap_lock);
- if (bdev)
- bdput(bdev);
+ return -ENODEV;
+}
+int find_first_swap(dev_t *device)
+{
+ int type;
+
+ spin_lock(&swap_lock);
+ for (type = 0; type < nr_swapfiles; type++) {
+ struct swap_info_struct *sis = swap_info[type];
+
+ if (!(sis->flags & SWP_WRITEOK))
+ continue;
+ *device = sis->bdev->bd_dev;
+ spin_unlock(&swap_lock);
+ return type;
+ }
+ spin_unlock(&swap_lock);
return -ENODEV;
}
@@ -2922,10 +2925,10 @@ static int claim_swapfile(struct swap_info_struct *p, struct inode *inode)
int error;
if (S_ISBLK(inode->i_mode)) {
- p->bdev = bdgrab(I_BDEV(inode));
- error = blkdev_get(p->bdev,
+ p->bdev = blkdev_get_by_dev(inode->i_rdev,
FMODE_READ | FMODE_WRITE | FMODE_EXCL, p);
- if (error < 0) {
+ if (IS_ERR(p->bdev)) {
+ error = PTR_ERR(p->bdev);
p->bdev = NULL;
return error;
}
@@ -3236,10 +3239,10 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
goto bad_swap_unlock_inode;
}
- if (bdi_cap_stable_pages_required(inode_to_bdi(inode)))
+ if (p->bdev && blk_queue_stable_writes(p->bdev->bd_disk->queue))
p->flags |= SWP_STABLE_WRITES;
- if (bdi_cap_synchronous_io(inode_to_bdi(inode)))
+ if (p->bdev && p->bdev->bd_disk->fops->rw_page)
p->flags |= SWP_SYNCHRONOUS_IO;
if (p->bdev && blk_queue_nonrot(bdev_get_queue(p->bdev))) {
generated by cgit (git 2.34.1) at 2024-06-17 10:11:10 +0000