Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 860 insertions, 0 deletions

diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
new file mode 100644
index 000000000..e2f7bedf1
--- /dev/null
+++ b/fs/f2fs/inline.c
@@ -0,0 +1,860 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * fs/f2fs/inline.c
+ * Copyright (c) 2013, Intel Corporation
+ * Authors: Huajun Li <huajun.li@intel.com>
+ *          Haicheng Li <haicheng.li@intel.com>
+ */
+
+#include <linux/fs.h>
+#include <linux/f2fs_fs.h>
+#include <linux/fiemap.h>
+#include <linux/fserror.h>
+
+#include "f2fs.h"
+#include "node.h"
+#include <trace/events/f2fs.h>
+
+static bool support_inline_data(struct inode *inode)
+{
+	if (f2fs_used_in_atomic_write(inode))
+		return false;
+	if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))
+		return false;
+	if (i_size_read(inode) > MAX_INLINE_DATA(inode))
+		return false;
+	return true;
+}
+
+bool f2fs_may_inline_data(struct inode *inode)
+{
+	if (!support_inline_data(inode))
+		return false;
+
+	return !f2fs_post_read_required(inode);
+}
+
+static bool inode_has_blocks(struct inode *inode, struct folio *ifolio)
+{
+	struct f2fs_inode *ri = F2FS_INODE(ifolio);
+	int i;
+
+	if (F2FS_HAS_BLOCKS(inode))
+		return true;
+
+	for (i = 0; i < DEF_NIDS_PER_INODE; i++) {
+		if (ri->i_nid[i])
+			return true;
+	}
+	return false;
+}
+
+bool f2fs_sanity_check_inline_data(struct inode *inode, struct folio *ifolio)
+{
+	if (!f2fs_has_inline_data(inode))
+		return false;
+
+	if (inode_has_blocks(inode, ifolio))
+		return false;
+
+	if (!support_inline_data(inode))
+		return true;
+
+	/*
+	 * used by sanity_check_inode(), when disk layout fields has not
+	 * been synchronized to inmem fields.
+	 */
+	return (S_ISREG(inode->i_mode) &&
+		(file_is_encrypt(inode) || file_is_verity(inode) ||
+		(F2FS_I(inode)->i_flags & F2FS_COMPR_FL)));
+}
+
+bool f2fs_may_inline_dentry(struct inode *inode)
+{
+	if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY))
+		return false;
+
+	if (!S_ISDIR(inode->i_mode))
+		return false;
+
+	return true;
+}
+
+void f2fs_do_read_inline_data(struct folio *folio, struct folio *ifolio)
+{
+	struct inode *inode = folio->mapping->host;
+
+	if (folio_test_uptodate(folio))
+		return;
+
+	f2fs_bug_on(F2FS_I_SB(inode), folio->index);
+
+	folio_zero_segment(folio, MAX_INLINE_DATA(inode), folio_size(folio));
+
+	/* Copy the whole inline data block */
+	memcpy_to_folio(folio, 0, inline_data_addr(inode, ifolio),
+		       MAX_INLINE_DATA(inode));
+	if (!folio_test_uptodate(folio))
+		folio_mark_uptodate(folio);
+}
+
+void f2fs_truncate_inline_inode(struct inode *inode, struct folio *ifolio,
+		u64 from)
+{
+	void *addr;
+
+	if (from >= MAX_INLINE_DATA(inode))
+		return;
+
+	addr = inline_data_addr(inode, ifolio);
+
+	f2fs_folio_wait_writeback(ifolio, NODE, true, true);
+	memset(addr + from, 0, MAX_INLINE_DATA(inode) - from);
+	folio_mark_dirty(ifolio);
+
+	if (from == 0)
+		clear_inode_flag(inode, FI_DATA_EXIST);
+}
+
+int f2fs_read_inline_data(struct inode *inode, struct folio *folio)
+{
+	struct folio *ifolio;
+
+	ifolio = f2fs_get_inode_folio(F2FS_I_SB(inode), inode->i_ino);
+	if (IS_ERR(ifolio)) {
+		folio_unlock(folio);
+		return PTR_ERR(ifolio);
+	}
+
+	if (!f2fs_has_inline_data(inode)) {
+		f2fs_folio_put(ifolio, true);
+		return -EAGAIN;
+	}
+
+	if (folio->index)
+		folio_zero_segment(folio, 0, folio_size(folio));
+	else
+		f2fs_do_read_inline_data(folio, ifolio);
+
+	if (!folio_test_uptodate(folio))
+		folio_mark_uptodate(folio);
+	f2fs_folio_put(ifolio, true);
+	folio_unlock(folio);
+	return 0;
+}
+
+int f2fs_convert_inline_folio(struct dnode_of_data *dn, struct folio *folio)
+{
+	struct f2fs_io_info fio = {
+		.sbi = F2FS_I_SB(dn->inode),
+		.ino = dn->inode->i_ino,
+		.type = DATA,
+		.op = REQ_OP_WRITE,
+		.op_flags = REQ_SYNC | REQ_PRIO,
+		.folio = folio,
+		.encrypted_page = NULL,
+		.io_type = FS_DATA_IO,
+	};
+	struct node_info ni;
+	int dirty, err;
+
+	if (!f2fs_exist_data(dn->inode))
+		goto clear_out;
+
+	err = f2fs_reserve_block(dn, 0);
+	if (err)
+		return err;
+
+	err = f2fs_get_node_info(fio.sbi, dn->nid, &ni, false);
+	if (err) {
+		f2fs_truncate_data_blocks_range(dn, 1);
+		f2fs_put_dnode(dn);
+		return err;
+	}
+
+	fio.version = ni.version;
+
+	if (unlikely(dn->data_blkaddr != NEW_ADDR)) {
+		f2fs_put_dnode(dn);
+		set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
+		f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%llu, i_addr[0]:0x%x, run fsck to fix.",
+			  __func__, dn->inode->i_ino, dn->data_blkaddr);
+		f2fs_handle_error(fio.sbi, ERROR_INVALID_BLKADDR);
+		fserror_report_file_metadata(dn->inode, -EFSCORRUPTED, GFP_NOFS);
+		return -EFSCORRUPTED;
+	}
+
+	f2fs_bug_on(F2FS_F_SB(folio), folio_test_writeback(folio));
+
+	f2fs_do_read_inline_data(folio, dn->inode_folio);
+	folio_mark_dirty(folio);
+
+	/* clear dirty state */
+	dirty = folio_clear_dirty_for_io(folio);
+
+	/* write data page to try to make data consistent */
+	folio_start_writeback(folio);
+	fio.old_blkaddr = dn->data_blkaddr;
+	set_inode_flag(dn->inode, FI_HOT_DATA);
+	f2fs_outplace_write_data(dn, &fio);
+	f2fs_folio_wait_writeback(folio, DATA, true, true);
+	if (dirty) {
+		inode_dec_dirty_pages(dn->inode);
+		f2fs_remove_dirty_inode(dn->inode);
+	}
+
+	/* this converted inline_data should be recovered. */
+	set_inode_flag(dn->inode, FI_APPEND_WRITE);
+
+	/* clear inline data and flag after data writeback */
+	f2fs_truncate_inline_inode(dn->inode, dn->inode_folio, 0);
+	folio_clear_f2fs_inline(dn->inode_folio);
+clear_out:
+	stat_dec_inline_inode(dn->inode);
+	clear_inode_flag(dn->inode, FI_INLINE_DATA);
+	f2fs_put_dnode(dn);
+	return 0;
+}
+
+int f2fs_convert_inline_inode(struct inode *inode)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+	struct dnode_of_data dn;
+	struct f2fs_lock_context lc;
+	struct folio *ifolio, *folio;
+	int err = 0;
+
+	if (f2fs_hw_is_readonly(sbi) || f2fs_readonly(sbi->sb))
+		return -EROFS;
+
+	if (!f2fs_has_inline_data(inode))
+		return 0;
+
+	err = f2fs_dquot_initialize(inode);
+	if (err)
+		return err;
+
+	folio = f2fs_grab_cache_folio(inode->i_mapping, 0, false);
+	if (IS_ERR(folio))
+		return PTR_ERR(folio);
+
+	f2fs_lock_op(sbi, &lc);
+
+	ifolio = f2fs_get_inode_folio(sbi, inode->i_ino);
+	if (IS_ERR(ifolio)) {
+		err = PTR_ERR(ifolio);
+		goto out;
+	}
+
+	set_new_dnode(&dn, inode, ifolio, ifolio, 0);
+
+	if (f2fs_has_inline_data(inode))
+		err = f2fs_convert_inline_folio(&dn, folio);
+
+	f2fs_put_dnode(&dn);
+out:
+	f2fs_unlock_op(sbi, &lc);
+
+	f2fs_folio_put(folio, true);
+
+	if (!err)
+		f2fs_balance_fs(sbi, dn.node_changed);
+
+	return err;
+}
+
+int f2fs_write_inline_data(struct inode *inode, struct folio *folio)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+	struct folio *ifolio;
+
+	ifolio = f2fs_get_inode_folio(sbi, inode->i_ino);
+	if (IS_ERR(ifolio))
+		return PTR_ERR(ifolio);
+
+	if (!f2fs_has_inline_data(inode)) {
+		f2fs_folio_put(ifolio, true);
+		return -EAGAIN;
+	}
+
+	f2fs_bug_on(F2FS_I_SB(inode), folio->index);
+
+	f2fs_folio_wait_writeback(ifolio, NODE, true, true);
+	memcpy_from_folio(inline_data_addr(inode, ifolio),
+			 folio, 0, MAX_INLINE_DATA(inode));
+	folio_mark_dirty(ifolio);
+
+	f2fs_clear_page_cache_dirty_tag(folio);
+
+	set_inode_flag(inode, FI_APPEND_WRITE);
+	set_inode_flag(inode, FI_DATA_EXIST);
+
+	folio_clear_f2fs_inline(ifolio);
+	f2fs_folio_put(ifolio, true);
+	return 0;
+}
+
+int f2fs_recover_inline_data(struct inode *inode, struct folio *nfolio)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+	struct f2fs_inode *ri = NULL;
+	void *src_addr, *dst_addr;
+
+	/*
+	 * The inline_data recovery policy is as follows.
+	 * [prev.] [next] of inline_data flag
+	 *    o       o  -> recover inline_data
+	 *    o       x  -> remove inline_data, and then recover data blocks
+	 *    x       o  -> remove data blocks, and then recover inline_data
+	 *    x       x  -> recover data blocks
+	 */
+	if (IS_INODE(nfolio))
+		ri = F2FS_INODE(nfolio);
+
+	if (f2fs_has_inline_data(inode) &&
+			ri && (ri->i_inline & F2FS_INLINE_DATA)) {
+		struct folio *ifolio;
+process_inline:
+		ifolio = f2fs_get_inode_folio(sbi, inode->i_ino);
+		if (IS_ERR(ifolio))
+			return PTR_ERR(ifolio);
+
+		f2fs_folio_wait_writeback(ifolio, NODE, true, true);
+
+		src_addr = inline_data_addr(inode, nfolio);
+		dst_addr = inline_data_addr(inode, ifolio);
+		memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
+
+		set_inode_flag(inode, FI_INLINE_DATA);
+		set_inode_flag(inode, FI_DATA_EXIST);
+
+		folio_mark_dirty(ifolio);
+		f2fs_folio_put(ifolio, true);
+		return 1;
+	}
+
+	if (f2fs_has_inline_data(inode)) {
+		struct folio *ifolio = f2fs_get_inode_folio(sbi, inode->i_ino);
+		if (IS_ERR(ifolio))
+			return PTR_ERR(ifolio);
+		f2fs_truncate_inline_inode(inode, ifolio, 0);
+		stat_dec_inline_inode(inode);
+		clear_inode_flag(inode, FI_INLINE_DATA);
+		f2fs_folio_put(ifolio, true);
+	} else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
+		int ret;
+
+		ret = f2fs_truncate_blocks(inode, 0, false);
+		if (ret)
+			return ret;
+		stat_inc_inline_inode(inode);
+		goto process_inline;
+	}
+	return 0;
+}
+
+struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
+					const struct f2fs_filename *fname,
+					struct folio **res_folio,
+					bool use_hash)
+{
+	struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
+	struct f2fs_dir_entry *de;
+	struct f2fs_dentry_ptr d;
+	struct folio *ifolio;
+	void *inline_dentry;
+
+	ifolio = f2fs_get_inode_folio(sbi, dir->i_ino);
+	if (IS_ERR(ifolio)) {
+		*res_folio = ifolio;
+		return NULL;
+	}
+
+	inline_dentry = inline_data_addr(dir, ifolio);
+
+	make_dentry_ptr_inline(dir, &d, inline_dentry);
+	de = f2fs_find_target_dentry(&d, fname, NULL, use_hash);
+	folio_unlock(ifolio);
+	if (IS_ERR(de)) {
+		*res_folio = ERR_CAST(de);
+		de = NULL;
+	}
+	if (de)
+		*res_folio = ifolio;
+	else
+		f2fs_folio_put(ifolio, false);
+
+	return de;
+}
+
+int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
+							struct folio *ifolio)
+{
+	struct f2fs_dentry_ptr d;
+	void *inline_dentry;
+
+	inline_dentry = inline_data_addr(inode, ifolio);
+
+	make_dentry_ptr_inline(inode, &d, inline_dentry);
+	f2fs_do_make_empty_dir(inode, parent, &d);
+
+	folio_mark_dirty(ifolio);
+
+	/* update i_size to MAX_INLINE_DATA */
+	if (i_size_read(inode) < MAX_INLINE_DATA(inode))
+		f2fs_i_size_write(inode, MAX_INLINE_DATA(inode));
+	return 0;
+}
+
+/*
+ * NOTE: ipage is grabbed by caller, but if any error occurs, we should
+ * release ipage in this function.
+ */
+static int f2fs_move_inline_dirents(struct inode *dir, struct folio *ifolio,
+							void *inline_dentry)
+{
+	struct folio *folio;
+	struct dnode_of_data dn;
+	struct f2fs_dentry_block *dentry_blk;
+	struct f2fs_dentry_ptr src, dst;
+	int err;
+
+	folio = f2fs_grab_cache_folio(dir->i_mapping, 0, true);
+	if (IS_ERR(folio)) {
+		f2fs_folio_put(ifolio, true);
+		return PTR_ERR(folio);
+	}
+
+	set_new_dnode(&dn, dir, ifolio, NULL, 0);
+	err = f2fs_reserve_block(&dn, 0);
+	if (err)
+		goto out;
+
+	if (unlikely(dn.data_blkaddr != NEW_ADDR)) {
+		f2fs_put_dnode(&dn);
+		set_sbi_flag(F2FS_F_SB(folio), SBI_NEED_FSCK);
+		f2fs_warn(F2FS_F_SB(folio), "%s: corrupted inline inode ino=%llu, i_addr[0]:0x%x, run fsck to fix.",
+			  __func__, dir->i_ino, dn.data_blkaddr);
+		f2fs_handle_error(F2FS_F_SB(folio), ERROR_INVALID_BLKADDR);
+		err = -EFSCORRUPTED;
+		fserror_report_file_metadata(dn.inode, err, GFP_NOFS);
+		goto out;
+	}
+
+	f2fs_folio_wait_writeback(folio, DATA, true, true);
+
+	dentry_blk = folio_address(folio);
+
+	/*
+	 * Start by zeroing the full block, to ensure that all unused space is
+	 * zeroed and no uninitialized memory is leaked to disk.
+	 */
+	memset(dentry_blk, 0, F2FS_BLKSIZE);
+
+	make_dentry_ptr_inline(dir, &src, inline_dentry);
+	make_dentry_ptr_block(dir, &dst, dentry_blk);
+
+	/* copy data from inline dentry block to new dentry block */
+	memcpy(dst.bitmap, src.bitmap, src.nr_bitmap);
+	memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max);
+	memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN);
+
+	if (!folio_test_uptodate(folio))
+		folio_mark_uptodate(folio);
+	folio_mark_dirty(folio);
+
+	/* clear inline dir and flag after data writeback */
+	f2fs_truncate_inline_inode(dir, ifolio, 0);
+
+	stat_dec_inline_dir(dir);
+	clear_inode_flag(dir, FI_INLINE_DENTRY);
+
+	/*
+	 * should retrieve reserved space which was used to keep
+	 * inline_dentry's structure for backward compatibility.
+	 */
+	if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
+			!f2fs_has_inline_xattr(dir))
+		F2FS_I(dir)->i_inline_xattr_size = 0;
+
+	f2fs_i_depth_write(dir, 1);
+	if (i_size_read(dir) < PAGE_SIZE)
+		f2fs_i_size_write(dir, PAGE_SIZE);
+out:
+	f2fs_folio_put(folio, true);
+	return err;
+}
+
+static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry)
+{
+	struct f2fs_dentry_ptr d;
+	unsigned long bit_pos = 0;
+	int err = 0;
+
+	make_dentry_ptr_inline(dir, &d, inline_dentry);
+
+	while (bit_pos < d.max) {
+		struct f2fs_dir_entry *de;
+		struct f2fs_filename fname;
+		nid_t ino;
+		umode_t fake_mode;
+
+		if (!test_bit_le(bit_pos, d.bitmap)) {
+			bit_pos++;
+			continue;
+		}
+
+		de = &d.dentry[bit_pos];
+
+		if (unlikely(!de->name_len)) {
+			bit_pos++;
+			continue;
+		}
+		if (unlikely(le16_to_cpu(de->name_len) > F2FS_NAME_LEN ||
+			     bit_pos + GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)) >
+			     d.max)) {
+			err = -EFSCORRUPTED;
+			goto punch_dentry_pages;
+		}
+
+		/*
+		 * We only need the disk_name and hash to move the dentry.
+		 * We don't need the original or casefolded filenames.
+		 */
+		memset(&fname, 0, sizeof(fname));
+		fname.disk_name.name = d.filename[bit_pos];
+		fname.disk_name.len = le16_to_cpu(de->name_len);
+		fname.hash = de->hash_code;
+
+		ino = le32_to_cpu(de->ino);
+		fake_mode = fs_ftype_to_dtype(de->file_type) << S_DT_SHIFT;
+
+		err = f2fs_add_regular_entry(dir, &fname, NULL, ino, fake_mode);
+		if (err)
+			goto punch_dentry_pages;
+
+		bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
+	}
+	return 0;
+
+punch_dentry_pages:
+	truncate_inode_pages(&dir->i_data, 0);
+	f2fs_truncate_blocks(dir, 0, false);
+	f2fs_remove_dirty_inode(dir);
+	return err;
+}
+
+static int f2fs_move_rehashed_dirents(struct inode *dir, struct folio *ifolio,
+							void *inline_dentry)
+{
+	void *backup_dentry;
+	int err;
+
+	backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir),
+				MAX_INLINE_DATA(dir), GFP_F2FS_ZERO);
+	if (!backup_dentry) {
+		f2fs_folio_put(ifolio, true);
+		return -ENOMEM;
+	}
+
+	memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir));
+	f2fs_truncate_inline_inode(dir, ifolio, 0);
+
+	folio_unlock(ifolio);
+
+	err = f2fs_add_inline_entries(dir, backup_dentry);
+	if (err)
+		goto recover;
+
+	folio_lock(ifolio);
+
+	stat_dec_inline_dir(dir);
+	clear_inode_flag(dir, FI_INLINE_DENTRY);
+
+	/*
+	 * should retrieve reserved space which was used to keep
+	 * inline_dentry's structure for backward compatibility.
+	 */
+	if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
+			!f2fs_has_inline_xattr(dir))
+		F2FS_I(dir)->i_inline_xattr_size = 0;
+
+	kfree(backup_dentry);
+	return 0;
+recover:
+	folio_lock(ifolio);
+	f2fs_folio_wait_writeback(ifolio, NODE, true, true);
+	memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
+	f2fs_i_depth_write(dir, 0);
+	f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
+	folio_mark_dirty(ifolio);
+	f2fs_folio_put(ifolio, true);
+
+	kfree(backup_dentry);
+	return err;
+}
+
+static int do_convert_inline_dir(struct inode *dir, struct folio *ifolio,
+							void *inline_dentry)
+{
+	if (!F2FS_I(dir)->i_dir_level)
+		return f2fs_move_inline_dirents(dir, ifolio, inline_dentry);
+	else
+		return f2fs_move_rehashed_dirents(dir, ifolio, inline_dentry);
+}
+
+int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
+	struct folio *ifolio;
+	struct f2fs_filename fname;
+	struct f2fs_lock_context lc;
+	void *inline_dentry = NULL;
+	int err = 0;
+
+	if (!f2fs_has_inline_dentry(dir))
+		return 0;
+
+	f2fs_lock_op(sbi, &lc);
+
+	err = f2fs_setup_filename(dir, &dentry->d_name, 0, &fname);
+	if (err)
+		goto out;
+
+	ifolio = f2fs_get_inode_folio(sbi, dir->i_ino);
+	if (IS_ERR(ifolio)) {
+		err = PTR_ERR(ifolio);
+		goto out_fname;
+	}
+
+	if (f2fs_has_enough_room(dir, ifolio, &fname)) {
+		f2fs_folio_put(ifolio, true);
+		goto out_fname;
+	}
+
+	inline_dentry = inline_data_addr(dir, ifolio);
+
+	err = do_convert_inline_dir(dir, ifolio, inline_dentry);
+	if (!err)
+		f2fs_folio_put(ifolio, true);
+out_fname:
+	f2fs_free_filename(&fname);
+out:
+	f2fs_unlock_op(sbi, &lc);
+	return err;
+}
+
+int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname,
+			  struct inode *inode, nid_t ino, umode_t mode)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
+	struct folio *ifolio;
+	unsigned int bit_pos;
+	void *inline_dentry = NULL;
+	struct f2fs_dentry_ptr d;
+	int slots = GET_DENTRY_SLOTS(fname->disk_name.len);
+	struct folio *folio = NULL;
+	int err = 0;
+
+	ifolio = f2fs_get_inode_folio(sbi, dir->i_ino);
+	if (IS_ERR(ifolio))
+		return PTR_ERR(ifolio);
+
+	inline_dentry = inline_data_addr(dir, ifolio);
+	make_dentry_ptr_inline(dir, &d, inline_dentry);
+
+	bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max);
+	if (bit_pos >= d.max) {
+		err = do_convert_inline_dir(dir, ifolio, inline_dentry);
+		if (err)
+			return err;
+		err = -EAGAIN;
+		goto out;
+	}
+
+	if (inode) {
+		f2fs_down_write_nested(&F2FS_I(inode)->i_sem,
+						SINGLE_DEPTH_NESTING);
+		folio = f2fs_init_inode_metadata(inode, dir, fname, ifolio);
+		if (IS_ERR(folio)) {
+			err = PTR_ERR(folio);
+			goto fail;
+		}
+	}
+
+	f2fs_folio_wait_writeback(ifolio, NODE, true, true);
+
+	f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash,
+			   bit_pos);
+
+	folio_mark_dirty(ifolio);
+
+	/* we don't need to mark_inode_dirty now */
+	if (inode) {
+		f2fs_i_pino_write(inode, dir->i_ino);
+
+		/* synchronize inode page's data from inode cache */
+		if (is_inode_flag_set(inode, FI_NEW_INODE))
+			f2fs_update_inode(inode, folio);
+
+		f2fs_folio_put(folio, true);
+	}
+
+	f2fs_update_parent_metadata(dir, inode, 0);
+fail:
+	if (inode)
+		f2fs_up_write(&F2FS_I(inode)->i_sem);
+out:
+	f2fs_folio_put(ifolio, true);
+	return err;
+}
+
+void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry,
+		struct folio *folio, struct inode *dir, struct inode *inode)
+{
+	struct f2fs_dentry_ptr d;
+	void *inline_dentry;
+	int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
+	unsigned int bit_pos;
+	int i;
+
+	folio_lock(folio);
+	f2fs_folio_wait_writeback(folio, NODE, true, true);
+
+	inline_dentry = inline_data_addr(dir, folio);
+	make_dentry_ptr_inline(dir, &d, inline_dentry);
+
+	bit_pos = dentry - d.dentry;
+	for (i = 0; i < slots; i++)
+		__clear_bit_le(bit_pos + i, d.bitmap);
+
+	folio_mark_dirty(folio);
+	f2fs_folio_put(folio, true);
+
+	inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir));
+	f2fs_mark_inode_dirty_sync(dir, false);
+
+	if (inode)
+		f2fs_drop_nlink(dir, inode);
+}
+
+bool f2fs_empty_inline_dir(struct inode *dir)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
+	struct folio *ifolio;
+	unsigned int bit_pos = 2;
+	void *inline_dentry;
+	struct f2fs_dentry_ptr d;
+
+	ifolio = f2fs_get_inode_folio(sbi, dir->i_ino);
+	if (IS_ERR(ifolio))
+		return false;
+
+	inline_dentry = inline_data_addr(dir, ifolio);
+	make_dentry_ptr_inline(dir, &d, inline_dentry);
+
+	bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
+
+	f2fs_folio_put(ifolio, true);
+
+	if (bit_pos < d.max)
+		return false;
+
+	return true;
+}
+
+int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
+				struct fscrypt_str *fstr)
+{
+	struct inode *inode = file_inode(file);
+	struct folio *ifolio = NULL;
+	struct f2fs_dentry_ptr d;
+	void *inline_dentry = NULL;
+	int err;
+
+	make_dentry_ptr_inline(inode, &d, inline_dentry);
+
+	if (ctx->pos == d.max)
+		return 0;
+
+	ifolio = f2fs_get_inode_folio(F2FS_I_SB(inode), inode->i_ino);
+	if (IS_ERR(ifolio))
+		return PTR_ERR(ifolio);
+
+	/*
+	 * f2fs_readdir was protected by inode.i_rwsem, it is safe to access
+	 * ipage without page's lock held.
+	 */
+	folio_unlock(ifolio);
+
+	inline_dentry = inline_data_addr(inode, ifolio);
+
+	make_dentry_ptr_inline(inode, &d, inline_dentry);
+
+	err = f2fs_fill_dentries(ctx, &d, 0, fstr);
+	if (!err)
+		ctx->pos = d.max;
+
+	f2fs_folio_put(ifolio, false);
+	return err < 0 ? err : 0;
+}
+
+int f2fs_inline_data_fiemap(struct inode *inode,
+		struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
+{
+	__u64 byteaddr = 0, ilen;
+	__u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
+		FIEMAP_EXTENT_LAST;
+	struct node_info ni;
+	struct folio *ifolio;
+	int err = 0;
+
+	ifolio = f2fs_get_inode_folio(F2FS_I_SB(inode), inode->i_ino);
+	if (IS_ERR(ifolio))
+		return PTR_ERR(ifolio);
+
+	if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
+				!f2fs_has_inline_data(inode)) {
+		err = -EAGAIN;
+		goto out;
+	}
+
+	if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) {
+		err = -EAGAIN;
+		goto out;
+	}
+
+	if (fieinfo->fi_flags & FIEMAP_FLAG_SYNC) {
+		err = f2fs_write_single_node_folio(ifolio, true, false, FS_NODE_IO);
+		if (err)
+			return err;
+		ifolio = f2fs_get_inode_folio(F2FS_I_SB(inode), inode->i_ino);
+		if (IS_ERR(ifolio))
+			return PTR_ERR(ifolio);
+		f2fs_folio_wait_writeback(ifolio, NODE, true, true);
+	}
+	ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
+	if (start >= ilen)
+		goto out;
+	if (start + len < ilen)
+		ilen = start + len;
+	ilen -= start;
+
+	err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni, false);
+	if (err)
+		goto out;
+
+	if (__is_valid_data_blkaddr(ni.blk_addr)) {
+		byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
+		byteaddr += (char *)inline_data_addr(inode, ifolio) -
+						(char *)F2FS_INODE(ifolio);
+	} else {
+		f2fs_bug_on(F2FS_I_SB(inode), ni.blk_addr != NEW_ADDR);
+		flags |= FIEMAP_EXTENT_DELALLOC | FIEMAP_EXTENT_UNKNOWN;
+	}
+	err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
+	trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err);
+out:
+	f2fs_folio_put(ifolio, true);
+	return err;
+}