Merge tag 'for-6.8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "There are no exciting changes for users, it's been mostly API
  conversions and some fixes or refactoring.

  The mount API conversion is a base for future improvements that would
  come with VFS. Metadata processing has been converted to folios, not
  yet enabling the large folios but it's one patch away once everything
  gets tested enough.

  Core changes:

   - convert extent buffers to folios:
      - direct API conversion where possible
      - performance can drop by a few percent on metadata heavy
        workloads, the folio sizes are not constant and the calculations
        add up in the item helpers
      - both regular and subpage modes
      - data cannot be converted yet, we need to port that to iomap and
        there are some other generic changes required

   - convert mount to the new API, should not be user visible:
      - options deprecated long time ago have been removed: inode_cache,
        recovery
      - the new logic that splits mount to two phases slightly changes
        timing of device scanning for multi-device filesystems
      - LSM options will now work (like for selinux)

   - convert delayed nodes radix tree to xarray, preserving the
     preload-like logic that still allows to allocate with GFP_NOFS

   - more validation of sysfs value of scrub_speed_max

   - refactor chunk map structure, reduce size and improve performance

   - extent map refactoring, smaller data structures, improved
     performance

   - reduce size of struct extent_io_tree, embedded in several
     structures

   - temporary pages used for compression are cached and attached to a
     shrinker, this may slightly improve performance

   - in zoned mode, remove redirty extent buffer tracking, zeros are
     written in case an out-of-order is detected and proper data are
     written to the actual write pointer

   - cleanups, refactoring, error message improvements, updated tests

   - verify and update branch name or tag

   - remove unwanted text"

* tag 'for-6.8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (89 commits)
  btrfs: pass btrfs_io_geometry into btrfs_max_io_len
  btrfs: pass struct btrfs_io_geometry to set_io_stripe
  btrfs: open code set_io_stripe for RAID56
  btrfs: change block mapping to switch/case in btrfs_map_block
  btrfs: factor out block mapping for single profiles
  btrfs: factor out block mapping for RAID5/6
  btrfs: reduce scope of data_stripes in btrfs_map_block
  btrfs: factor out block mapping for RAID10
  btrfs: factor out block mapping for DUP profiles
  btrfs: factor out RAID1 block mapping
  btrfs: factor out block-mapping for RAID0
  btrfs: re-introduce struct btrfs_io_geometry
  btrfs: factor out helper for single device IO check
  btrfs: migrate btrfs_repair_io_failure() to folio interfaces
  btrfs: migrate eb_bitmap_offset() to folio interfaces
  btrfs: migrate various end io functions to folios
  btrfs: migrate subpage code to folio interfaces
  btrfs: migrate get_eb_page_index() and get_eb_offset_in_page() to folios
  btrfs: don't double put our subpage reference in alloc_extent_buffer
  btrfs: cleanup metadata page pointer usage
  ...

Author: torvalds

fs/btrfs/accessors.c

@@ -27,7 +27,7 @@ static bool check_setget_bounds(const struct extent_buffer *eb,
 void btrfs_init_map_token(struct btrfs_map_token *token, struct extent_buffer *eb)
 {
 	token->eb = eb;
-	token->kaddr = page_address(eb->pages[0]);
+	token->kaddr = folio_address(eb->folios[0]);
 	token->offset = 0;
 }
 
@@ -50,7 +50,7 @@ void btrfs_init_map_token(struct btrfs_map_token *token, struct extent_buffer *e
  * an offset into the extent buffer page array, cast to a specific type.  This
  * gives us all the type checking.
  *
- * The extent buffer pages stored in the array pages do not form a contiguous
+ * The extent buffer pages stored in the array folios may not form a contiguous
  * phyusical range, but the API functions assume the linear offset to the range
  * from 0 to metadata node size.
  */
@@ -60,48 +60,52 @@ u##bits btrfs_get_token_##bits(struct btrfs_map_token *token,		\
 			       const void *ptr, unsigned long off)	\
 {									\
 	const unsigned long member_offset = (unsigned long)ptr + off;	\
-	const unsigned long idx = get_eb_page_index(member_offset);	\
-	const unsigned long oip = get_eb_offset_in_page(token->eb,	\
-							member_offset);	\
+	const unsigned long idx = get_eb_folio_index(token->eb, member_offset); \
+	const unsigned long oil = get_eb_offset_in_folio(token->eb,	\
+							 member_offset);\
+	const int unit_size = folio_size(token->eb->folios[0]);		\
+	const int unit_shift = folio_shift(token->eb->folios[0]);	\
 	const int size = sizeof(u##bits);				\
 	u8 lebytes[sizeof(u##bits)];					\
-	const int part = PAGE_SIZE - oip;				\
+	const int part = unit_size - oil;				\
 									\
 	ASSERT(token);							\
 	ASSERT(token->kaddr);						\
 	ASSERT(check_setget_bounds(token->eb, ptr, off, size));		\
 	if (token->offset <= member_offset &&				\
-	    member_offset + size <= token->offset + PAGE_SIZE) {	\
-		return get_unaligned_le##bits(token->kaddr + oip);	\
+	    member_offset + size <= token->offset + unit_size) {	\
+		return get_unaligned_le##bits(token->kaddr + oil);	\
 	}								\
-	token->kaddr = page_address(token->eb->pages[idx]);		\
-	token->offset = idx << PAGE_SHIFT;				\
-	if (INLINE_EXTENT_BUFFER_PAGES == 1 || oip + size <= PAGE_SIZE ) \
-		return get_unaligned_le##bits(token->kaddr + oip);	\
+	token->kaddr = folio_address(token->eb->folios[idx]);		\
+	token->offset = idx << unit_shift;				\
+	if (INLINE_EXTENT_BUFFER_PAGES == 1 || oil + size <= unit_size) \
+		return get_unaligned_le##bits(token->kaddr + oil);	\
 									\
-	memcpy(lebytes, token->kaddr + oip, part);			\
-	token->kaddr = page_address(token->eb->pages[idx + 1]);		\
-	token->offset = (idx + 1) << PAGE_SHIFT;			\
+	memcpy(lebytes, token->kaddr + oil, part);			\
+	token->kaddr = folio_address(token->eb->folios[idx + 1]);	\
+	token->offset = (idx + 1) << unit_shift;			\
 	memcpy(lebytes + part, token->kaddr, size - part);		\
 	return get_unaligned_le##bits(lebytes);				\
 }									\
 u##bits btrfs_get_##bits(const struct extent_buffer *eb,		\
 			 const void *ptr, unsigned long off)		\
 {									\
 	const unsigned long member_offset = (unsigned long)ptr + off;	\
-	const unsigned long oip = get_eb_offset_in_page(eb, member_offset); \
-	const unsigned long idx = get_eb_page_index(member_offset);	\
-	char *kaddr = page_address(eb->pages[idx]);			\
+	const unsigned long idx = get_eb_folio_index(eb, member_offset);\
+	const unsigned long oil = get_eb_offset_in_folio(eb,		\
+							 member_offset);\
+	const int unit_size = folio_size(eb->folios[0]);		\
+	char *kaddr = folio_address(eb->folios[idx]);			\
 	const int size = sizeof(u##bits);				\
-	const int part = PAGE_SIZE - oip;				\
+	const int part = unit_size - oil;				\
 	u8 lebytes[sizeof(u##bits)];					\
 									\
 	ASSERT(check_setget_bounds(eb, ptr, off, size));		\
-	if (INLINE_EXTENT_BUFFER_PAGES == 1 || oip + size <= PAGE_SIZE)	\
-		return get_unaligned_le##bits(kaddr + oip);		\
+	if (INLINE_EXTENT_BUFFER_PAGES == 1 || oil + size <= unit_size)	\
+		return get_unaligned_le##bits(kaddr + oil);		\
 									\
-	memcpy(lebytes, kaddr + oip, part);				\
-	kaddr = page_address(eb->pages[idx + 1]);			\
+	memcpy(lebytes, kaddr + oil, part);				\
+	kaddr = folio_address(eb->folios[idx + 1]);			\
 	memcpy(lebytes + part, kaddr, size - part);			\
 	return get_unaligned_le##bits(lebytes);				\
 }									\
@@ -110,53 +114,59 @@ void btrfs_set_token_##bits(struct btrfs_map_token *token,		\
 			    u##bits val)				\
 {									\
 	const unsigned long member_offset = (unsigned long)ptr + off;	\
-	const unsigned long idx = get_eb_page_index(member_offset);	\
-	const unsigned long oip = get_eb_offset_in_page(token->eb,	\
-							member_offset);	\
+	const unsigned long idx = get_eb_folio_index(token->eb, member_offset); \
+	const unsigned long oil = get_eb_offset_in_folio(token->eb,	\
+							 member_offset);\
+	const int unit_size = folio_size(token->eb->folios[0]);		\
+	const int unit_shift = folio_shift(token->eb->folios[0]);	\
 	const int size = sizeof(u##bits);				\
 	u8 lebytes[sizeof(u##bits)];					\
-	const int part = PAGE_SIZE - oip;				\
+	const int part = unit_size - oil;				\
 									\
 	ASSERT(token);							\
 	ASSERT(token->kaddr);						\
 	ASSERT(check_setget_bounds(token->eb, ptr, off, size));		\
 	if (token->offset <= member_offset &&				\
-	    member_offset + size <= token->offset + PAGE_SIZE) {	\
-		put_unaligned_le##bits(val, token->kaddr + oip);	\
+	    member_offset + size <= token->offset + unit_size) {	\
+		put_unaligned_le##bits(val, token->kaddr + oil);	\
 		return;							\
 	}								\
-	token->kaddr = page_address(token->eb->pages[idx]);		\
-	token->offset = idx << PAGE_SHIFT;				\
-	if (INLINE_EXTENT_BUFFER_PAGES == 1 || oip + size <= PAGE_SIZE) { \
-		put_unaligned_le##bits(val, token->kaddr + oip);	\
+	token->kaddr = folio_address(token->eb->folios[idx]);		\
+	token->offset = idx << unit_shift;				\
+	if (INLINE_EXTENT_BUFFER_PAGES == 1 ||				\
+	    oil + size <= unit_size) {					\
+		put_unaligned_le##bits(val, token->kaddr + oil);	\
 		return;							\
 	}								\
 	put_unaligned_le##bits(val, lebytes);				\
-	memcpy(token->kaddr + oip, lebytes, part);			\
-	token->kaddr = page_address(token->eb->pages[idx + 1]);		\
-	token->offset = (idx + 1) << PAGE_SHIFT;			\
+	memcpy(token->kaddr + oil, lebytes, part);			\
+	token->kaddr = folio_address(token->eb->folios[idx + 1]);	\
+	token->offset = (idx + 1) << unit_shift;			\
 	memcpy(token->kaddr, lebytes + part, size - part);		\
 }									\
 void btrfs_set_##bits(const struct extent_buffer *eb, void *ptr,	\
 		      unsigned long off, u##bits val)			\
 {									\
 	const unsigned long member_offset = (unsigned long)ptr + off;	\
-	const unsigned long oip = get_eb_offset_in_page(eb, member_offset); \
-	const unsigned long idx = get_eb_page_index(member_offset);	\
-	char *kaddr = page_address(eb->pages[idx]);			\
+	const unsigned long idx = get_eb_folio_index(eb, member_offset);\
+	const unsigned long oil = get_eb_offset_in_folio(eb,		\
+							 member_offset);\
+	const int unit_size = folio_size(eb->folios[0]);		\
+	char *kaddr = folio_address(eb->folios[idx]);			\
 	const int size = sizeof(u##bits);				\
-	const int part = PAGE_SIZE - oip;				\
+	const int part = unit_size - oil;				\
 	u8 lebytes[sizeof(u##bits)];					\
 									\
 	ASSERT(check_setget_bounds(eb, ptr, off, size));		\
-	if (INLINE_EXTENT_BUFFER_PAGES == 1 || oip + size <= PAGE_SIZE) { \
-		put_unaligned_le##bits(val, kaddr + oip);		\
+	if (INLINE_EXTENT_BUFFER_PAGES == 1 ||				\
+	    oil + size <= unit_size) {					\
+		put_unaligned_le##bits(val, kaddr + oil);		\
 		return;							\
 	}								\
 									\
 	put_unaligned_le##bits(val, lebytes);				\
-	memcpy(kaddr + oip, lebytes, part);				\
-	kaddr = page_address(eb->pages[idx + 1]);			\
+	memcpy(kaddr + oil, lebytes, part);				\
+	kaddr = folio_address(eb->folios[idx + 1]);			\
 	memcpy(kaddr, lebytes + part, size - part);			\
 }
 

fs/btrfs/accessors.h

@@ -90,14 +90,14 @@ static inline void btrfs_set_token_##name(struct btrfs_map_token *token,\
 #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits)		\
 static inline u##bits btrfs_##name(const struct extent_buffer *eb)	\
 {									\
-	const type *p = page_address(eb->pages[0]) +			\
+	const type *p = folio_address(eb->folios[0]) +			\
 			offset_in_page(eb->start);			\
 	return get_unaligned_le##bits(&p->member);			\
 }									\
 static inline void btrfs_set_##name(const struct extent_buffer *eb,	\
 				    u##bits val)			\
 {									\
-	type *p = page_address(eb->pages[0]) + offset_in_page(eb->start); \
+	type *p = folio_address(eb->folios[0]) + offset_in_page(eb->start); \
 	put_unaligned_le##bits(val, &p->member);			\
 }
 

fs/btrfs/bio.c

@@ -194,6 +194,12 @@ static void btrfs_end_repair_bio(struct btrfs_bio *repair_bbio,
 	struct bio_vec *bv = bio_first_bvec_all(&repair_bbio->bio);
 	int mirror = repair_bbio->mirror_num;
 
+	/*
+	 * We can only trigger this for data bio, which doesn't support larger
+	 * folios yet.
+	 */
+	ASSERT(folio_order(page_folio(bv->bv_page)) == 0);
+
 	if (repair_bbio->bio.bi_status ||
 	    !btrfs_data_csum_ok(repair_bbio, dev, 0, bv)) {
 		bio_reset(&repair_bbio->bio, NULL, REQ_OP_READ);
@@ -215,7 +221,7 @@ static void btrfs_end_repair_bio(struct btrfs_bio *repair_bbio,
 		btrfs_repair_io_failure(fs_info, btrfs_ino(inode),
 				  repair_bbio->file_offset, fs_info->sectorsize,
 				  repair_bbio->saved_iter.bi_sector << SECTOR_SHIFT,
-				  bv->bv_page, bv->bv_offset, mirror);
+				  page_folio(bv->bv_page), bv->bv_offset, mirror);
 	} while (mirror != fbio->bbio->mirror_num);
 
 done:
@@ -626,7 +632,7 @@ static bool should_async_write(struct btrfs_bio *bbio)
 /*
  * Submit bio to an async queue.
  *
- * Return true if the work has been succesfuly submitted, else false.
+ * Return true if the work has been successfully submitted, else false.
  */
 static bool btrfs_wq_submit_bio(struct btrfs_bio *bbio,
 				struct btrfs_io_context *bioc,
@@ -767,8 +773,8 @@ void btrfs_submit_bio(struct btrfs_bio *bbio, int mirror_num)
  * freeing the bio.
  */
 int btrfs_repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start,
-			    u64 length, u64 logical, struct page *page,
-			    unsigned int pg_offset, int mirror_num)
+			    u64 length, u64 logical, struct folio *folio,
+			    unsigned int folio_offset, int mirror_num)
 {
 	struct btrfs_io_stripe smap = { 0 };
 	struct bio_vec bvec;
@@ -799,7 +805,8 @@ int btrfs_repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start,
 
 	bio_init(&bio, smap.dev->bdev, &bvec, 1, REQ_OP_WRITE | REQ_SYNC);
 	bio.bi_iter.bi_sector = smap.physical >> SECTOR_SHIFT;
-	__bio_add_page(&bio, page, length, pg_offset);
+	ret = bio_add_folio(&bio, folio, length, folio_offset);
+	ASSERT(ret);
 	ret = submit_bio_wait(&bio);
 	if (ret) {
 		/* try to remap that extent elsewhere? */

fs/btrfs/bio.h

@@ -105,7 +105,7 @@ void btrfs_bio_end_io(struct btrfs_bio *bbio, blk_status_t status);
 void btrfs_submit_bio(struct btrfs_bio *bbio, int mirror_num);
 void btrfs_submit_repair_write(struct btrfs_bio *bbio, int mirror_num, bool dev_replace);
 int btrfs_repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start,
-			    u64 length, u64 logical, struct page *page,
-			    unsigned int pg_offset, int mirror_num);
+			    u64 length, u64 logical, struct folio *folio,
+			    unsigned int folio_offset, int mirror_num);
 
 #endif