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-rw-r--r--fs/btrfs/subpage.c373
1 files changed, 192 insertions, 181 deletions
diff --git a/fs/btrfs/subpage.c b/fs/btrfs/subpage.c
index 1b999c6e4193..93511d54abf8 100644
--- a/fs/btrfs/subpage.c
+++ b/fs/btrfs/subpage.c
@@ -64,7 +64,7 @@
* This means a slightly higher tree locking latency.
*/
-bool btrfs_is_subpage(const struct btrfs_fs_info *fs_info, struct page *page)
+bool btrfs_is_subpage(const struct btrfs_fs_info *fs_info, struct address_space *mapping)
{
if (fs_info->sectorsize >= PAGE_SIZE)
return false;
@@ -74,8 +74,7 @@ bool btrfs_is_subpage(const struct btrfs_fs_info *fs_info, struct page *page)
* mapping. And if page->mapping->host is data inode, it's subpage.
* As we have ruled our sectorsize >= PAGE_SIZE case already.
*/
- if (!page->mapping || !page->mapping->host ||
- is_data_inode(page->mapping->host))
+ if (!mapping || !mapping->host || is_data_inode(mapping->host))
return true;
/*
@@ -116,7 +115,7 @@ void btrfs_init_subpage_info(struct btrfs_subpage_info *subpage_info, u32 sector
}
int btrfs_attach_subpage(const struct btrfs_fs_info *fs_info,
- struct page *page, enum btrfs_subpage_type type)
+ struct folio *folio, enum btrfs_subpage_type type)
{
struct btrfs_subpage *subpage;
@@ -124,31 +123,30 @@ int btrfs_attach_subpage(const struct btrfs_fs_info *fs_info,
* We have cases like a dummy extent buffer page, which is not mapped
* and doesn't need to be locked.
*/
- if (page->mapping)
- ASSERT(PageLocked(page));
+ if (folio->mapping)
+ ASSERT(folio_test_locked(folio));
- /* Either not subpage, or the page already has private attached */
- if (!btrfs_is_subpage(fs_info, page) || PagePrivate(page))
+ /* Either not subpage, or the folio already has private attached. */
+ if (!btrfs_is_subpage(fs_info, folio->mapping) || folio_test_private(folio))
return 0;
subpage = btrfs_alloc_subpage(fs_info, type);
if (IS_ERR(subpage))
return PTR_ERR(subpage);
- attach_page_private(page, subpage);
+ folio_attach_private(folio, subpage);
return 0;
}
-void btrfs_detach_subpage(const struct btrfs_fs_info *fs_info,
- struct page *page)
+void btrfs_detach_subpage(const struct btrfs_fs_info *fs_info, struct folio *folio)
{
struct btrfs_subpage *subpage;
- /* Either not subpage, or already detached */
- if (!btrfs_is_subpage(fs_info, page) || !PagePrivate(page))
+ /* Either not subpage, or the folio already has private attached. */
+ if (!btrfs_is_subpage(fs_info, folio->mapping) || !folio_test_private(folio))
return;
- subpage = detach_page_private(page);
+ subpage = folio_detach_private(folio);
ASSERT(subpage);
btrfs_free_subpage(subpage);
}
@@ -188,77 +186,78 @@ void btrfs_free_subpage(struct btrfs_subpage *subpage)
* This is important for eb allocation, to prevent race with last eb freeing
* of the same page.
* With the eb_refs increased before the eb inserted into radix tree,
- * detach_extent_buffer_page() won't detach the page private while we're still
+ * detach_extent_buffer_page() won't detach the folio private while we're still
* allocating the extent buffer.
*/
-void btrfs_page_inc_eb_refs(const struct btrfs_fs_info *fs_info,
- struct page *page)
+void btrfs_folio_inc_eb_refs(const struct btrfs_fs_info *fs_info, struct folio *folio)
{
struct btrfs_subpage *subpage;
- if (!btrfs_is_subpage(fs_info, page))
+ if (!btrfs_is_subpage(fs_info, folio->mapping))
return;
- ASSERT(PagePrivate(page) && page->mapping);
- lockdep_assert_held(&page->mapping->private_lock);
+ ASSERT(folio_test_private(folio) && folio->mapping);
+ lockdep_assert_held(&folio->mapping->i_private_lock);
- subpage = (struct btrfs_subpage *)page->private;
+ subpage = folio_get_private(folio);
atomic_inc(&subpage->eb_refs);
}
-void btrfs_page_dec_eb_refs(const struct btrfs_fs_info *fs_info,
- struct page *page)
+void btrfs_folio_dec_eb_refs(const struct btrfs_fs_info *fs_info, struct folio *folio)
{
struct btrfs_subpage *subpage;
- if (!btrfs_is_subpage(fs_info, page))
+ if (!btrfs_is_subpage(fs_info, folio->mapping))
return;
- ASSERT(PagePrivate(page) && page->mapping);
- lockdep_assert_held(&page->mapping->private_lock);
+ ASSERT(folio_test_private(folio) && folio->mapping);
+ lockdep_assert_held(&folio->mapping->i_private_lock);
- subpage = (struct btrfs_subpage *)page->private;
+ subpage = folio_get_private(folio);
ASSERT(atomic_read(&subpage->eb_refs));
atomic_dec(&subpage->eb_refs);
}
static void btrfs_subpage_assert(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
+ /* For subpage support, the folio must be single page. */
+ ASSERT(folio_order(folio) == 0);
+
/* Basic checks */
- ASSERT(PagePrivate(page) && page->private);
+ ASSERT(folio_test_private(folio) && folio_get_private(folio));
ASSERT(IS_ALIGNED(start, fs_info->sectorsize) &&
IS_ALIGNED(len, fs_info->sectorsize));
/*
* The range check only works for mapped page, we can still have
* unmapped page like dummy extent buffer pages.
*/
- if (page->mapping)
- ASSERT(page_offset(page) <= start &&
- start + len <= page_offset(page) + PAGE_SIZE);
+ if (folio->mapping)
+ ASSERT(folio_pos(folio) <= start &&
+ start + len <= folio_pos(folio) + PAGE_SIZE);
}
void btrfs_subpage_start_reader(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
+ struct btrfs_subpage *subpage = folio_get_private(folio);
const int nbits = len >> fs_info->sectorsize_bits;
- btrfs_subpage_assert(fs_info, page, start, len);
+ btrfs_subpage_assert(fs_info, folio, start, len);
atomic_add(nbits, &subpage->readers);
}
void btrfs_subpage_end_reader(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
+ struct btrfs_subpage *subpage = folio_get_private(folio);
const int nbits = len >> fs_info->sectorsize_bits;
bool is_data;
bool last;
- btrfs_subpage_assert(fs_info, page, start, len);
- is_data = is_data_inode(page->mapping->host);
+ btrfs_subpage_assert(fs_info, folio, start, len);
+ is_data = is_data_inode(folio->mapping->host);
ASSERT(atomic_read(&subpage->readers) >= nbits);
last = atomic_sub_and_test(nbits, &subpage->readers);
@@ -270,35 +269,35 @@ void btrfs_subpage_end_reader(const struct btrfs_fs_info *fs_info,
* As we want the atomic_sub_and_test() to be always executed.
*/
if (is_data && last)
- unlock_page(page);
+ folio_unlock(folio);
}
-static void btrfs_subpage_clamp_range(struct page *page, u64 *start, u32 *len)
+static void btrfs_subpage_clamp_range(struct folio *folio, u64 *start, u32 *len)
{
u64 orig_start = *start;
u32 orig_len = *len;
- *start = max_t(u64, page_offset(page), orig_start);
+ *start = max_t(u64, folio_pos(folio), orig_start);
/*
* For certain call sites like btrfs_drop_pages(), we may have pages
* beyond the target range. In that case, just set @len to 0, subpage
* helpers can handle @len == 0 without any problem.
*/
- if (page_offset(page) >= orig_start + orig_len)
+ if (folio_pos(folio) >= orig_start + orig_len)
*len = 0;
else
- *len = min_t(u64, page_offset(page) + PAGE_SIZE,
+ *len = min_t(u64, folio_pos(folio) + PAGE_SIZE,
orig_start + orig_len) - *start;
}
void btrfs_subpage_start_writer(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
+ struct btrfs_subpage *subpage = folio_get_private(folio);
const int nbits = (len >> fs_info->sectorsize_bits);
int ret;
- btrfs_subpage_assert(fs_info, page, start, len);
+ btrfs_subpage_assert(fs_info, folio, start, len);
ASSERT(atomic_read(&subpage->readers) == 0);
ret = atomic_add_return(nbits, &subpage->writers);
@@ -306,12 +305,12 @@ void btrfs_subpage_start_writer(const struct btrfs_fs_info *fs_info,
}
bool btrfs_subpage_end_and_test_writer(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
+ struct btrfs_subpage *subpage = folio_get_private(folio);
const int nbits = (len >> fs_info->sectorsize_bits);
- btrfs_subpage_assert(fs_info, page, start, len);
+ btrfs_subpage_assert(fs_info, folio, start, len);
/*
* We have call sites passing @lock_page into
@@ -328,7 +327,7 @@ bool btrfs_subpage_end_and_test_writer(const struct btrfs_fs_info *fs_info,
}
/*
- * Lock a page for delalloc page writeback.
+ * Lock a folio for delalloc page writeback.
*
* Return -EAGAIN if the page is not properly initialized.
* Return 0 with the page locked, and writer counter updated.
@@ -337,38 +336,40 @@ bool btrfs_subpage_end_and_test_writer(const struct btrfs_fs_info *fs_info,
* it's really the correct page, as the caller is using
* filemap_get_folios_contig(), which can race with page invalidating.
*/
-int btrfs_page_start_writer_lock(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+int btrfs_folio_start_writer_lock(const struct btrfs_fs_info *fs_info,
+ struct folio *folio, u64 start, u32 len)
{
- if (unlikely(!fs_info) || !btrfs_is_subpage(fs_info, page)) {
- lock_page(page);
+ if (unlikely(!fs_info) || !btrfs_is_subpage(fs_info, folio->mapping)) {
+ folio_lock(folio);
return 0;
}
- lock_page(page);
- if (!PagePrivate(page) || !page->private) {
- unlock_page(page);
+ folio_lock(folio);
+ if (!folio_test_private(folio) || !folio_get_private(folio)) {
+ folio_unlock(folio);
return -EAGAIN;
}
- btrfs_subpage_clamp_range(page, &start, &len);
- btrfs_subpage_start_writer(fs_info, page, start, len);
+ btrfs_subpage_clamp_range(folio, &start, &len);
+ btrfs_subpage_start_writer(fs_info, folio, start, len);
return 0;
}
-void btrfs_page_end_writer_lock(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+void btrfs_folio_end_writer_lock(const struct btrfs_fs_info *fs_info,
+ struct folio *folio, u64 start, u32 len)
{
- if (unlikely(!fs_info) || !btrfs_is_subpage(fs_info, page))
- return unlock_page(page);
- btrfs_subpage_clamp_range(page, &start, &len);
- if (btrfs_subpage_end_and_test_writer(fs_info, page, start, len))
- unlock_page(page);
+ if (unlikely(!fs_info) || !btrfs_is_subpage(fs_info, folio->mapping)) {
+ folio_unlock(folio);
+ return;
+ }
+ btrfs_subpage_clamp_range(folio, &start, &len);
+ if (btrfs_subpage_end_and_test_writer(fs_info, folio, start, len))
+ folio_unlock(folio);
}
-#define subpage_calc_start_bit(fs_info, page, name, start, len) \
+#define subpage_calc_start_bit(fs_info, folio, name, start, len) \
({ \
unsigned int start_bit; \
\
- btrfs_subpage_assert(fs_info, page, start, len); \
+ btrfs_subpage_assert(fs_info, folio, start, len); \
start_bit = offset_in_page(start) >> fs_info->sectorsize_bits; \
start_bit += fs_info->subpage_info->name##_offset; \
start_bit; \
@@ -385,46 +386,46 @@ void btrfs_page_end_writer_lock(const struct btrfs_fs_info *fs_info,
fs_info->subpage_info->bitmap_nr_bits)
void btrfs_subpage_set_uptodate(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
- unsigned int start_bit = subpage_calc_start_bit(fs_info, page,
+ struct btrfs_subpage *subpage = folio_get_private(folio);
+ unsigned int start_bit = subpage_calc_start_bit(fs_info, folio,
uptodate, start, len);
unsigned long flags;
spin_lock_irqsave(&subpage->lock, flags);
bitmap_set(subpage->bitmaps, start_bit, len >> fs_info->sectorsize_bits);
if (subpage_test_bitmap_all_set(fs_info, subpage, uptodate))
- SetPageUptodate(page);
+ folio_mark_uptodate(folio);
spin_unlock_irqrestore(&subpage->lock, flags);
}
void btrfs_subpage_clear_uptodate(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
- unsigned int start_bit = subpage_calc_start_bit(fs_info, page,
+ struct btrfs_subpage *subpage = folio_get_private(folio);
+ unsigned int start_bit = subpage_calc_start_bit(fs_info, folio,
uptodate, start, len);
unsigned long flags;
spin_lock_irqsave(&subpage->lock, flags);
bitmap_clear(subpage->bitmaps, start_bit, len >> fs_info->sectorsize_bits);
- ClearPageUptodate(page);
+ folio_clear_uptodate(folio);
spin_unlock_irqrestore(&subpage->lock, flags);
}
void btrfs_subpage_set_dirty(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
- unsigned int start_bit = subpage_calc_start_bit(fs_info, page,
+ struct btrfs_subpage *subpage = folio_get_private(folio);
+ unsigned int start_bit = subpage_calc_start_bit(fs_info, folio,
dirty, start, len);
unsigned long flags;
spin_lock_irqsave(&subpage->lock, flags);
bitmap_set(subpage->bitmaps, start_bit, len >> fs_info->sectorsize_bits);
spin_unlock_irqrestore(&subpage->lock, flags);
- set_page_dirty(page);
+ folio_mark_dirty(folio);
}
/*
@@ -438,10 +439,10 @@ void btrfs_subpage_set_dirty(const struct btrfs_fs_info *fs_info,
* extra handling for tree blocks.
*/
bool btrfs_subpage_clear_and_test_dirty(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
- unsigned int start_bit = subpage_calc_start_bit(fs_info, page,
+ struct btrfs_subpage *subpage = folio_get_private(folio);
+ unsigned int start_bit = subpage_calc_start_bit(fs_info, folio,
dirty, start, len);
unsigned long flags;
bool last = false;
@@ -455,101 +456,101 @@ bool btrfs_subpage_clear_and_test_dirty(const struct btrfs_fs_info *fs_info,
}
void btrfs_subpage_clear_dirty(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
bool last;
- last = btrfs_subpage_clear_and_test_dirty(fs_info, page, start, len);
+ last = btrfs_subpage_clear_and_test_dirty(fs_info, folio, start, len);
if (last)
- clear_page_dirty_for_io(page);
+ folio_clear_dirty_for_io(folio);
}
void btrfs_subpage_set_writeback(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
- unsigned int start_bit = subpage_calc_start_bit(fs_info, page,
+ struct btrfs_subpage *subpage = folio_get_private(folio);
+ unsigned int start_bit = subpage_calc_start_bit(fs_info, folio,
writeback, start, len);
unsigned long flags;
spin_lock_irqsave(&subpage->lock, flags);
bitmap_set(subpage->bitmaps, start_bit, len >> fs_info->sectorsize_bits);
- set_page_writeback(page);
+ folio_start_writeback(folio);
spin_unlock_irqrestore(&subpage->lock, flags);
}
void btrfs_subpage_clear_writeback(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
- unsigned int start_bit = subpage_calc_start_bit(fs_info, page,
+ struct btrfs_subpage *subpage = folio_get_private(folio);
+ unsigned int start_bit = subpage_calc_start_bit(fs_info, folio,
writeback, start, len);
unsigned long flags;
spin_lock_irqsave(&subpage->lock, flags);
bitmap_clear(subpage->bitmaps, start_bit, len >> fs_info->sectorsize_bits);
if (subpage_test_bitmap_all_zero(fs_info, subpage, writeback)) {
- ASSERT(PageWriteback(page));
- end_page_writeback(page);
+ ASSERT(folio_test_writeback(folio));
+ folio_end_writeback(folio);
}
spin_unlock_irqrestore(&subpage->lock, flags);
}
void btrfs_subpage_set_ordered(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
- unsigned int start_bit = subpage_calc_start_bit(fs_info, page,
+ struct btrfs_subpage *subpage = folio_get_private(folio);
+ unsigned int start_bit = subpage_calc_start_bit(fs_info, folio,
ordered, start, len);
unsigned long flags;
spin_lock_irqsave(&subpage->lock, flags);
bitmap_set(subpage->bitmaps, start_bit, len >> fs_info->sectorsize_bits);
- SetPageOrdered(page);
+ folio_set_ordered(folio);
spin_unlock_irqrestore(&subpage->lock, flags);
}
void btrfs_subpage_clear_ordered(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
- unsigned int start_bit = subpage_calc_start_bit(fs_info, page,
+ struct btrfs_subpage *subpage = folio_get_private(folio);
+ unsigned int start_bit = subpage_calc_start_bit(fs_info, folio,
ordered, start, len);
unsigned long flags;
spin_lock_irqsave(&subpage->lock, flags);
bitmap_clear(subpage->bitmaps, start_bit, len >> fs_info->sectorsize_bits);
if (subpage_test_bitmap_all_zero(fs_info, subpage, ordered))
- ClearPageOrdered(page);
+ folio_clear_ordered(folio);
spin_unlock_irqrestore(&subpage->lock, flags);
}
void btrfs_subpage_set_checked(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
- unsigned int start_bit = subpage_calc_start_bit(fs_info, page,
+ struct btrfs_subpage *subpage = folio_get_private(folio);
+ unsigned int start_bit = subpage_calc_start_bit(fs_info, folio,
checked, start, len);
unsigned long flags;
spin_lock_irqsave(&subpage->lock, flags);
bitmap_set(subpage->bitmaps, start_bit, len >> fs_info->sectorsize_bits);
if (subpage_test_bitmap_all_set(fs_info, subpage, checked))
- SetPageChecked(page);
+ folio_set_checked(folio);
spin_unlock_irqrestore(&subpage->lock, flags);
}
void btrfs_subpage_clear_checked(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
- unsigned int start_bit = subpage_calc_start_bit(fs_info, page,
+ struct btrfs_subpage *subpage = folio_get_private(folio);
+ unsigned int start_bit = subpage_calc_start_bit(fs_info, folio,
checked, start, len);
unsigned long flags;
spin_lock_irqsave(&subpage->lock, flags);
bitmap_clear(subpage->bitmaps, start_bit, len >> fs_info->sectorsize_bits);
- ClearPageChecked(page);
+ folio_clear_checked(folio);
spin_unlock_irqrestore(&subpage->lock, flags);
}
@@ -559,10 +560,10 @@ void btrfs_subpage_clear_checked(const struct btrfs_fs_info *fs_info,
*/
#define IMPLEMENT_BTRFS_SUBPAGE_TEST_OP(name) \
bool btrfs_subpage_test_##name(const struct btrfs_fs_info *fs_info, \
- struct page *page, u64 start, u32 len) \
+ struct folio *folio, u64 start, u32 len) \
{ \
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private; \
- unsigned int start_bit = subpage_calc_start_bit(fs_info, page, \
+ struct btrfs_subpage *subpage = folio_get_private(folio); \
+ unsigned int start_bit = subpage_calc_start_bit(fs_info, folio, \
name, start, len); \
unsigned long flags; \
bool ret; \
@@ -584,88 +585,94 @@ IMPLEMENT_BTRFS_SUBPAGE_TEST_OP(checked);
* in. We only test sectorsize == PAGE_SIZE cases so far, thus we can fall
* back to regular sectorsize branch.
*/
-#define IMPLEMENT_BTRFS_PAGE_OPS(name, set_page_func, clear_page_func, \
- test_page_func) \
-void btrfs_page_set_##name(const struct btrfs_fs_info *fs_info, \
- struct page *page, u64 start, u32 len) \
+#define IMPLEMENT_BTRFS_PAGE_OPS(name, folio_set_func, \
+ folio_clear_func, folio_test_func) \
+void btrfs_folio_set_##name(const struct btrfs_fs_info *fs_info, \
+ struct folio *folio, u64 start, u32 len) \
{ \
- if (unlikely(!fs_info) || !btrfs_is_subpage(fs_info, page)) { \
- set_page_func(page); \
+ if (unlikely(!fs_info) || \
+ !btrfs_is_subpage(fs_info, folio->mapping)) { \
+ folio_set_func(folio); \
return; \
} \
- btrfs_subpage_set_##name(fs_info, page, start, len); \
+ btrfs_subpage_set_##name(fs_info, folio, start, len); \
} \
-void btrfs_page_clear_##name(const struct btrfs_fs_info *fs_info, \
- struct page *page, u64 start, u32 len) \
+void btrfs_folio_clear_##name(const struct btrfs_fs_info *fs_info, \
+ struct folio *folio, u64 start, u32 len) \
{ \
- if (unlikely(!fs_info) || !btrfs_is_subpage(fs_info, page)) { \
- clear_page_func(page); \
+ if (unlikely(!fs_info) || \
+ !btrfs_is_subpage(fs_info, folio->mapping)) { \
+ folio_clear_func(folio); \
return; \
} \
- btrfs_subpage_clear_##name(fs_info, page, start, len); \
+ btrfs_subpage_clear_##name(fs_info, folio, start, len); \
} \
-bool btrfs_page_test_##name(const struct btrfs_fs_info *fs_info, \
- struct page *page, u64 start, u32 len) \
+bool btrfs_folio_test_##name(const struct btrfs_fs_info *fs_info, \
+ struct folio *folio, u64 start, u32 len) \
{ \
- if (unlikely(!fs_info) || !btrfs_is_subpage(fs_info, page)) \
- return test_page_func(page); \
- return btrfs_subpage_test_##name(fs_info, page, start, len); \
+ if (unlikely(!fs_info) || \
+ !btrfs_is_subpage(fs_info, folio->mapping)) \
+ return folio_test_func(folio); \
+ return btrfs_subpage_test_##name(fs_info, folio, start, len); \
} \
-void btrfs_page_clamp_set_##name(const struct btrfs_fs_info *fs_info, \
- struct page *page, u64 start, u32 len) \
+void btrfs_folio_clamp_set_##name(const struct btrfs_fs_info *fs_info, \
+ struct folio *folio, u64 start, u32 len) \
{ \
- if (unlikely(!fs_info) || !btrfs_is_subpage(fs_info, page)) { \
- set_page_func(page); \
+ if (unlikely(!fs_info) || \
+ !btrfs_is_subpage(fs_info, folio->mapping)) { \
+ folio_set_func(folio); \
return; \
} \
- btrfs_subpage_clamp_range(page, &start, &len); \
- btrfs_subpage_set_##name(fs_info, page, start, len); \
+ btrfs_subpage_clamp_range(folio, &start, &len); \
+ btrfs_subpage_set_##name(fs_info, folio, start, len); \
} \
-void btrfs_page_clamp_clear_##name(const struct btrfs_fs_info *fs_info, \
- struct page *page, u64 start, u32 len) \
+void btrfs_folio_clamp_clear_##name(const struct btrfs_fs_info *fs_info, \
+ struct folio *folio, u64 start, u32 len) \
{ \
- if (unlikely(!fs_info) || !btrfs_is_subpage(fs_info, page)) { \
- clear_page_func(page); \
+ if (unlikely(!fs_info) || \
+ !btrfs_is_subpage(fs_info, folio->mapping)) { \
+ folio_clear_func(folio); \
return; \
} \
- btrfs_subpage_clamp_range(page, &start, &len); \
- btrfs_subpage_clear_##name(fs_info, page, start, len); \
+ btrfs_subpage_clamp_range(folio, &start, &len); \
+ btrfs_subpage_clear_##name(fs_info, folio, start, len); \
} \
-bool btrfs_page_clamp_test_##name(const struct btrfs_fs_info *fs_info, \
- struct page *page, u64 start, u32 len) \
+bool btrfs_folio_clamp_test_##name(const struct btrfs_fs_info *fs_info, \
+ struct folio *folio, u64 start, u32 len) \
{ \
- if (unlikely(!fs_info) || !btrfs_is_subpage(fs_info, page)) \
- return test_page_func(page); \
- btrfs_subpage_clamp_range(page, &start, &len); \
- return btrfs_subpage_test_##name(fs_info, page, start, len); \
-}
-IMPLEMENT_BTRFS_PAGE_OPS(uptodate, SetPageUptodate, ClearPageUptodate,
- PageUptodate);
-IMPLEMENT_BTRFS_PAGE_OPS(dirty, set_page_dirty, clear_page_dirty_for_io,
- PageDirty);
-IMPLEMENT_BTRFS_PAGE_OPS(writeback, set_page_writeback, end_page_writeback,
- PageWriteback);
-IMPLEMENT_BTRFS_PAGE_OPS(ordered, SetPageOrdered, ClearPageOrdered,
- PageOrdered);
-IMPLEMENT_BTRFS_PAGE_OPS(checked, SetPageChecked, ClearPageChecked, PageChecked);
+ if (unlikely(!fs_info) || \
+ !btrfs_is_subpage(fs_info, folio->mapping)) \
+ return folio_test_func(folio); \
+ btrfs_subpage_clamp_range(folio, &start, &len); \
+ return btrfs_subpage_test_##name(fs_info, folio, start, len); \
+}
+IMPLEMENT_BTRFS_PAGE_OPS(uptodate, folio_mark_uptodate, folio_clear_uptodate,
+ folio_test_uptodate);
+IMPLEMENT_BTRFS_PAGE_OPS(dirty, folio_mark_dirty, folio_clear_dirty_for_io,
+ folio_test_dirty);
+IMPLEMENT_BTRFS_PAGE_OPS(writeback, folio_start_writeback, folio_end_writeback,
+ folio_test_writeback);
+IMPLEMENT_BTRFS_PAGE_OPS(ordered, folio_set_ordered, folio_clear_ordered,
+ folio_test_ordered);
+IMPLEMENT_BTRFS_PAGE_OPS(checked, folio_set_checked, folio_clear_checked,
+ folio_test_checked);
/*
* Make sure not only the page dirty bit is cleared, but also subpage dirty bit
* is cleared.
*/
-void btrfs_page_assert_not_dirty(const struct btrfs_fs_info *fs_info,
- struct page *page)
+void btrfs_folio_assert_not_dirty(const struct btrfs_fs_info *fs_info, struct folio *folio)
{
- struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private;
+ struct btrfs_subpage *subpage = folio_get_private(folio);
if (!IS_ENABLED(CONFIG_BTRFS_ASSERT))
return;
- ASSERT(!PageDirty(page));
- if (!btrfs_is_subpage(fs_info, page))
+ ASSERT(!folio_test_dirty(folio));
+ if (!btrfs_is_subpage(fs_info, folio->mapping))
return;
- ASSERT(PagePrivate(page) && page->private);
+ ASSERT(folio_test_private(folio) && folio_get_private(folio));
ASSERT(subpage_test_bitmap_all_zero(fs_info, subpage, dirty));
}
@@ -684,18 +691,20 @@ void btrfs_page_assert_not_dirty(const struct btrfs_fs_info *fs_info,
* extent_write_locked_range().
* In this case, we have to call subpage helper to handle the case.
*/
-void btrfs_page_unlock_writer(struct btrfs_fs_info *fs_info, struct page *page,
- u64 start, u32 len)
+void btrfs_folio_unlock_writer(struct btrfs_fs_info *fs_info,
+ struct folio *folio, u64 start, u32 len)
{
struct btrfs_subpage *subpage;
- ASSERT(PageLocked(page));
+ ASSERT(folio_test_locked(folio));
/* For non-subpage case, we just unlock the page */
- if (!btrfs_is_subpage(fs_info, page))
- return unlock_page(page);
+ if (!btrfs_is_subpage(fs_info, folio->mapping)) {
+ folio_unlock(folio);
+ return;
+ }
- ASSERT(PagePrivate(page) && page->private);
- subpage = (struct btrfs_subpage *)page->private;
+ ASSERT(folio_test_private(folio) && folio_get_private(folio));
+ subpage = folio_get_private(folio);
/*
* For subpage case, there are two types of locked page. With or
@@ -704,12 +713,14 @@ void btrfs_page_unlock_writer(struct btrfs_fs_info *fs_info, struct page *page,
* Since we own the page lock, no one else could touch subpage::writers
* and we are safe to do several atomic operations without spinlock.
*/
- if (atomic_read(&subpage->writers) == 0)
+ if (atomic_read(&subpage->writers) == 0) {
/* No writers, locked by plain lock_page() */
- return unlock_page(page);
+ folio_unlock(folio);
+ return;
+ }
/* Have writers, use proper subpage helper to end it */
- btrfs_page_end_writer_lock(fs_info, page, start, len);
+ btrfs_folio_end_writer_lock(fs_info, folio, start, len);
}
#define GET_SUBPAGE_BITMAP(subpage, subpage_info, name, dst) \
@@ -717,7 +728,7 @@ void btrfs_page_unlock_writer(struct btrfs_fs_info *fs_info, struct page *page,
subpage_info->name##_offset, subpage_info->bitmap_nr_bits)
void __cold btrfs_subpage_dump_bitmap(const struct btrfs_fs_info *fs_info,
- struct page *page, u64 start, u32 len)
+ struct folio *folio, u64 start, u32 len)
{
struct btrfs_subpage_info *subpage_info = fs_info->subpage_info;
struct btrfs_subpage *subpage;
@@ -729,9 +740,9 @@ void __cold btrfs_subpage_dump_bitmap(const struct btrfs_fs_info *fs_info,
unsigned long checked_bitmap;
unsigned long flags;
- ASSERT(PagePrivate(page) && page->private);
+ ASSERT(folio_test_private(folio) && folio_get_private(folio));
ASSERT(subpage_info);
- subpage = (struct btrfs_subpage *)page->private;
+ subpage = folio_get_private(folio);
spin_lock_irqsave(&subpage->lock, flags);
GET_SUBPAGE_BITMAP(subpage, subpage_info, uptodate, &uptodate_bitmap);
@@ -741,10 +752,10 @@ void __cold btrfs_subpage_dump_bitmap(const struct btrfs_fs_info *fs_info,
GET_SUBPAGE_BITMAP(subpage, subpage_info, checked, &checked_bitmap);
spin_unlock_irqrestore(&subpage->lock, flags);
- dump_page(page, "btrfs subpage dump");
+ dump_page(folio_page(folio, 0), "btrfs subpage dump");
btrfs_warn(fs_info,
"start=%llu len=%u page=%llu, bitmaps uptodate=%*pbl error=%*pbl dirty=%*pbl writeback=%*pbl ordered=%*pbl checked=%*pbl",
- start, len, page_offset(page),
+ start, len, folio_pos(folio),
subpage_info->bitmap_nr_bits, &uptodate_bitmap,
subpage_info->bitmap_nr_bits, &error_bitmap,
subpage_info->bitmap_nr_bits, &dirty_bitmap,
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-20 17:19:59 +0000