Merge tag 'f2fs-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've added two features: F2FS_IOC_START_ATOMIC_REPLACE
  and a per-block age-based extent cache.

  F2FS_IOC_START_ATOMIC_REPLACE is a variant of the previous atomic
  write feature which guarantees a per-file atomicity. It would be more
  efficient than AtomicFile implementation in Android framework.

  The per-block age-based extent cache implements another type of extent
  cache in memory which keeps the per-block age in a file, so that block
  allocator could split the hot and cold data blocks more accurately.

  Enhancements:
   - introduce F2FS_IOC_START_ATOMIC_REPLACE
   - refactor extent_cache to add a new per-block-age-based extent cache support
   - introduce discard_urgent_util, gc_mode, max_ordered_discard sysfs knobs
   - add proc entry to show discard_plist info
   - optimize iteration over sparse directories
   - add barrier mount option

  Bug fixes:
   - avoid victim selection from previous victim section
   - fix to enable compress for newly created file if extension matches
   - set zstd compress level correctly
   - initialize locks early in f2fs_fill_super() to fix bugs reported by syzbot
   - correct i_size change for atomic writes
   - allow to read node block after shutdown
   - allow to set compression for inlined file
   - fix gc mode when gc_urgent_high_remaining is 1
   - should put a page when checking the summary info

  Minor fixes and various clean-ups in GC, discard, debugfs, sysfs, and
  doc"

* tag 'f2fs-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (63 commits)
  f2fs: reset wait_ms to default if any of the victims have been selected
  f2fs: fix some format WARNING in debug.c and sysfs.c
  f2fs: don't call f2fs_issue_discard_timeout() when discard_cmd_cnt is 0 in f2fs_put_super()
  f2fs: fix iostat parameter for discard
  f2fs: Fix spelling mistake in label: free_bio_enrty_cache -> free_bio_entry_cache
  f2fs: add block_age-based extent cache
  f2fs: allocate the extent_cache by default
  f2fs: refactor extent_cache to support for read and more
  f2fs: remove unnecessary __init_extent_tree
  f2fs: move internal functions into extent_cache.c
  f2fs: specify extent cache for read explicitly
  f2fs: introduce f2fs_is_readonly() for readability
  f2fs: remove F2FS_SET_FEATURE() and F2FS_CLEAR_FEATURE() macro
  f2fs: do some cleanup for f2fs module init
  MAINTAINERS: Add f2fs bug tracker link
  f2fs: remove the unused flush argument to change_curseg
  f2fs: open code allocate_segment_by_default
  f2fs: remove struct segment_allocation default_salloc_ops
  f2fs: introduce discard_urgent_util sysfs node
  f2fs: define MIN_DISCARD_GRANULARITY macro
  ...

1 files changed, 29 insertions, 25 deletions

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 7af75041bd81..6e43e19c7d1c 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -39,10 +39,8 @@ static struct bio_set f2fs_bioset;
 
 int __init f2fs_init_bioset(void)
 {
-	if (bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE,
-					0, BIOSET_NEED_BVECS))
-		return -ENOMEM;
-	return 0;
+	return bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE,
+					0, BIOSET_NEED_BVECS);
 }
 
 void f2fs_destroy_bioset(void)
@@ -1145,7 +1143,7 @@ void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr)
 {
 	dn->data_blkaddr = blkaddr;
 	f2fs_set_data_blkaddr(dn);
-	f2fs_update_extent_cache(dn);
+	f2fs_update_read_extent_cache(dn);
 }
 
 /* dn->ofs_in_node will be returned with up-to-date last block pointer */
@@ -1214,7 +1212,7 @@ int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index)
 	struct extent_info ei = {0, };
 	struct inode *inode = dn->inode;
 
-	if (f2fs_lookup_extent_cache(inode, index, &ei)) {
+	if (f2fs_lookup_read_extent_cache(inode, index, &ei)) {
 		dn->data_blkaddr = ei.blk + index - ei.fofs;
 		return 0;
 	}
@@ -1223,7 +1221,8 @@ int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index)
 }
 
 struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
-				     blk_opf_t op_flags, bool for_write)
+				     blk_opf_t op_flags, bool for_write,
+				     pgoff_t *next_pgofs)
 {
 	struct address_space *mapping = inode->i_mapping;
 	struct dnode_of_data dn;
@@ -1235,7 +1234,7 @@ struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
 	if (!page)
 		return ERR_PTR(-ENOMEM);
 
-	if (f2fs_lookup_extent_cache(inode, index, &ei)) {
+	if (f2fs_lookup_read_extent_cache(inode, index, &ei)) {
 		dn.data_blkaddr = ei.blk + index - ei.fofs;
 		if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE_READ)) {
@@ -1249,12 +1248,17 @@ struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
 
 	set_new_dnode(&dn, inode, NULL, NULL, 0);
 	err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
-	if (err)
+	if (err) {
+		if (err == -ENOENT && next_pgofs)
+			*next_pgofs = f2fs_get_next_page_offset(&dn, index);
 		goto put_err;
+	}
 	f2fs_put_dnode(&dn);
 
 	if (unlikely(dn.data_blkaddr == NULL_ADDR)) {
 		err = -ENOENT;
+		if (next_pgofs)
+			*next_pgofs = index + 1;
 		goto put_err;
 	}
 	if (dn.data_blkaddr != NEW_ADDR &&
@@ -1298,7 +1302,8 @@ put_err:
 	return ERR_PTR(err);
 }
 
-struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index)
+struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index,
+					pgoff_t *next_pgofs)
 {
 	struct address_space *mapping = inode->i_mapping;
 	struct page *page;
@@ -1308,7 +1313,7 @@ struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index)
 		return page;
 	f2fs_put_page(page, 0);
 
-	page = f2fs_get_read_data_page(inode, index, 0, false);
+	page = f2fs_get_read_data_page(inode, index, 0, false, next_pgofs);
 	if (IS_ERR(page))
 		return page;
 
@@ -1334,7 +1339,7 @@ struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
 	struct address_space *mapping = inode->i_mapping;
 	struct page *page;
 repeat:
-	page = f2fs_get_read_data_page(inode, index, 0, for_write);
+	page = f2fs_get_read_data_page(inode, index, 0, for_write, NULL);
 	if (IS_ERR(page))
 		return page;
 
@@ -1497,7 +1502,7 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
 	pgofs =	(pgoff_t)map->m_lblk;
 	end = pgofs + maxblocks;
 
-	if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) {
+	if (!create && f2fs_lookup_read_extent_cache(inode, pgofs, &ei)) {
 		if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO &&
 							map->m_may_create)
 			goto next_dnode;
@@ -1707,7 +1712,7 @@ skip:
 		if (map->m_flags & F2FS_MAP_MAPPED) {
 			unsigned int ofs = start_pgofs - map->m_lblk;
 
-			f2fs_update_extent_cache_range(&dn,
+			f2fs_update_read_extent_cache_range(&dn,
 				start_pgofs, map->m_pblk + ofs,
 				map->m_len - ofs);
 		}
@@ -1752,7 +1757,7 @@ sync_out:
 		if (map->m_flags & F2FS_MAP_MAPPED) {
 			unsigned int ofs = start_pgofs - map->m_lblk;
 
-			f2fs_update_extent_cache_range(&dn,
+			f2fs_update_read_extent_cache_range(&dn,
 				start_pgofs, map->m_pblk + ofs,
 				map->m_len - ofs);
 		}
@@ -2212,7 +2217,7 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
 	if (f2fs_cluster_is_empty(cc))
 		goto out;
 
-	if (f2fs_lookup_extent_cache(inode, start_idx, &ei))
+	if (f2fs_lookup_read_extent_cache(inode, start_idx, &ei))
 		from_dnode = false;
 
 	if (!from_dnode)
@@ -2643,7 +2648,7 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio)
 		set_new_dnode(&dn, inode, NULL, NULL, 0);
 
 	if (need_inplace_update(fio) &&
-			f2fs_lookup_extent_cache(inode, page->index, &ei)) {
+	    f2fs_lookup_read_extent_cache(inode, page->index, &ei)) {
 		fio->old_blkaddr = ei.blk + page->index - ei.fofs;
 
 		if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
@@ -3367,7 +3372,7 @@ restart:
 	} else if (locked) {
 		err = f2fs_get_block(&dn, index);
 	} else {
-		if (f2fs_lookup_extent_cache(inode, index, &ei)) {
+		if (f2fs_lookup_read_extent_cache(inode, index, &ei)) {
 			dn.data_blkaddr = ei.blk + index - ei.fofs;
 		} else {
 			/* hole case */
@@ -3408,7 +3413,7 @@ static int __find_data_block(struct inode *inode, pgoff_t index,
 
 	set_new_dnode(&dn, inode, ipage, ipage, 0);
 
-	if (f2fs_lookup_extent_cache(inode, index, &ei)) {
+	if (f2fs_lookup_read_extent_cache(inode, index, &ei)) {
 		dn.data_blkaddr = ei.blk + index - ei.fofs;
 	} else {
 		/* hole case */
@@ -3472,6 +3477,9 @@ static int prepare_atomic_write_begin(struct f2fs_sb_info *sbi,
 	else if (*blk_addr != NULL_ADDR)
 		return 0;
 
+	if (is_inode_flag_set(inode, FI_ATOMIC_REPLACE))
+		goto reserve_block;
+
 	/* Look for the block in the original inode */
 	err = __find_data_block(inode, index, &ori_blk_addr);
 	if (err)
@@ -4093,9 +4101,7 @@ int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi)
 	sbi->post_read_wq = alloc_workqueue("f2fs_post_read_wq",
 						 WQ_UNBOUND | WQ_HIGHPRI,
 						 num_online_cpus());
-	if (!sbi->post_read_wq)
-		return -ENOMEM;
-	return 0;
+	return sbi->post_read_wq ? 0 : -ENOMEM;
 }
 
 void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi)
@@ -4108,9 +4114,7 @@ int __init f2fs_init_bio_entry_cache(void)
 {
 	bio_entry_slab = f2fs_kmem_cache_create("f2fs_bio_entry_slab",
 			sizeof(struct bio_entry));
-	if (!bio_entry_slab)
-		return -ENOMEM;
-	return 0;
+	return bio_entry_slab ? 0 : -ENOMEM;
 }
 
 void f2fs_destroy_bio_entry_cache(void)