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, 290 insertions, 0 deletions

diff --git a/fs/ntfs/bitmap.c b/fs/ntfs/bitmap.c
new file mode 100644
index 000000000..b1436b315
--- /dev/null
+++ b/fs/ntfs/bitmap.c
@@ -0,0 +1,290 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * NTFS kernel bitmap handling.
+ *
+ * Copyright (c) 2004-2005 Anton Altaparmakov
+ * Copyright (c) 2025 LG Electronics Co., Ltd.
+ */
+
+#include <linux/bitops.h>
+#include <linux/blkdev.h>
+
+#include "bitmap.h"
+#include "ntfs.h"
+
+int ntfs_trim_fs(struct ntfs_volume *vol, struct fstrim_range *range)
+{
+	size_t buf_clusters;
+	pgoff_t index, start_index, end_index;
+	struct file_ra_state *ra;
+	struct folio *folio;
+	unsigned long *bitmap;
+	char *kaddr;
+	u64 end, trimmed = 0, start_buf, end_buf, end_cluster;
+	u64 start_cluster = ntfs_bytes_to_cluster(vol, range->start);
+	u32 dq = bdev_discard_granularity(vol->sb->s_bdev);
+	int ret = 0;
+
+	if (!dq)
+		dq = vol->cluster_size;
+
+	if (start_cluster >= vol->nr_clusters)
+		return -EINVAL;
+
+	if (range->len == (u64)-1)
+		end_cluster = vol->nr_clusters;
+	else {
+		end_cluster = ntfs_bytes_to_cluster(vol,
+				(range->start + range->len + vol->cluster_size - 1));
+		if (end_cluster > vol->nr_clusters)
+			end_cluster = vol->nr_clusters;
+	}
+
+	ra = kzalloc(sizeof(*ra), GFP_NOFS);
+	if (!ra)
+		return -ENOMEM;
+
+	buf_clusters = PAGE_SIZE * 8;
+	start_index = start_cluster >> 15;
+	end_index = (end_cluster + buf_clusters - 1) >> 15;
+
+	for (index = start_index; index < end_index; index++) {
+		folio = ntfs_get_locked_folio(vol->lcnbmp_ino->i_mapping,
+				index, end_index, ra);
+		if (IS_ERR(folio)) {
+			ret = PTR_ERR(folio);
+			goto out_free;
+		}
+
+		kaddr = kmap_local_folio(folio, 0);
+		bitmap = (unsigned long *)kaddr;
+
+		start_buf = max_t(u64, index * buf_clusters, start_cluster);
+		end_buf = min_t(u64, (index + 1) * buf_clusters, end_cluster);
+
+		end = start_buf;
+		while (end < end_buf) {
+			u64 aligned_start, aligned_count;
+			u64 start = find_next_zero_bit(bitmap, end_buf - start_buf,
+					end - start_buf) + start_buf;
+			if (start >= end_buf)
+				break;
+
+			end = find_next_bit(bitmap, end_buf - start_buf,
+					start - start_buf) + start_buf;
+
+			aligned_start = ALIGN(ntfs_cluster_to_bytes(vol, start), dq);
+			aligned_count =
+				ALIGN_DOWN(ntfs_cluster_to_bytes(vol, end - start), dq);
+			if (aligned_count >= range->minlen) {
+				ret = blkdev_issue_discard(vol->sb->s_bdev, aligned_start >> 9,
+						aligned_count >> 9, GFP_NOFS);
+				if (ret)
+					goto out_unmap;
+				trimmed += aligned_count;
+			}
+		}
+
+out_unmap:
+		kunmap_local(kaddr);
+		folio_unlock(folio);
+		folio_put(folio);
+
+		if (ret)
+			goto out_free;
+	}
+
+	range->len = trimmed;
+
+out_free:
+	kfree(ra);
+	return ret;
+}
+
+/*
+ * __ntfs_bitmap_set_bits_in_run - set a run of bits in a bitmap to a value
+ * @vi:			vfs inode describing the bitmap
+ * @start_bit:		first bit to set
+ * @count:		number of bits to set
+ * @value:		value to set the bits to (i.e. 0 or 1)
+ * @is_rollback:	if 'true' this is a rollback operation
+ *
+ * Set @count bits starting at bit @start_bit in the bitmap described by the
+ * vfs inode @vi to @value, where @value is either 0 or 1.
+ *
+ * @is_rollback should always be 'false', it is for internal use to rollback
+ * errors.  You probably want to use ntfs_bitmap_set_bits_in_run() instead.
+ *
+ * Return 0 on success and -errno on error.
+ */
+int __ntfs_bitmap_set_bits_in_run(struct inode *vi, const s64 start_bit,
+		const s64 count, const u8 value, const bool is_rollback)
+{
+	s64 cnt = count;
+	pgoff_t index, end_index;
+	struct address_space *mapping;
+	struct folio *folio;
+	u8 *kaddr;
+	int pos, len, err;
+	u8 bit;
+	struct ntfs_inode *ni = NTFS_I(vi);
+	struct ntfs_volume *vol = ni->vol;
+
+	ntfs_debug("Entering for i_ino 0x%llx, start_bit 0x%llx, count 0x%llx, value %u.%s",
+			ni->mft_no, (unsigned long long)start_bit,
+			(unsigned long long)cnt, (unsigned int)value,
+			is_rollback ? " (rollback)" : "");
+
+	if (start_bit < 0 || cnt < 0 || value > 1)
+		return -EINVAL;
+
+	/*
+	 * Calculate the indices for the pages containing the first and last
+	 * bits, i.e. @start_bit and @start_bit + @cnt - 1, respectively.
+	 */
+	index = start_bit >> (3 + PAGE_SHIFT);
+	end_index = (start_bit + cnt - 1) >> (3 + PAGE_SHIFT);
+
+	/* Get the page containing the first bit (@start_bit). */
+	mapping = vi->i_mapping;
+	folio = read_mapping_folio(mapping, index, NULL);
+	if (IS_ERR(folio)) {
+		if (!is_rollback)
+			ntfs_error(vi->i_sb,
+				"Failed to map first page (error %li), aborting.",
+				PTR_ERR(folio));
+		return PTR_ERR(folio);
+	}
+
+	folio_lock(folio);
+	kaddr = kmap_local_folio(folio, 0);
+
+	/* Set @pos to the position of the byte containing @start_bit. */
+	pos = (start_bit >> 3) & ~PAGE_MASK;
+
+	/* Calculate the position of @start_bit in the first byte. */
+	bit = start_bit & 7;
+
+	/* If the first byte is partial, modify the appropriate bits in it. */
+	if (bit) {
+		u8 *byte = kaddr + pos;
+
+		if (ni->mft_no == FILE_Bitmap)
+			ntfs_set_lcn_empty_bits(vol, index, value, min_t(s64, 8 - bit, cnt));
+		while ((bit & 7) && cnt) {
+			cnt--;
+			if (value)
+				*byte |= 1 << bit++;
+			else
+				*byte &= ~(1 << bit++);
+		}
+		/* If we are done, unmap the page and return success. */
+		if (!cnt)
+			goto done;
+
+		/* Update @pos to the new position. */
+		pos++;
+	}
+	/*
+	 * Depending on @value, modify all remaining whole bytes in the page up
+	 * to @cnt.
+	 */
+	len = min_t(s64, cnt >> 3, PAGE_SIZE - pos);
+	memset(kaddr + pos, value ? 0xff : 0, len);
+	cnt -= len << 3;
+	if (ni->mft_no == FILE_Bitmap)
+		ntfs_set_lcn_empty_bits(vol, index, value, len << 3);
+
+	/* Update @len to point to the first not-done byte in the page. */
+	if (cnt < 8)
+		len += pos;
+
+	/* If we are not in the last page, deal with all subsequent pages. */
+	while (index < end_index) {
+		if (cnt <= 0) {
+			err = -EIO;
+			goto rollback;
+		}
+
+		/* Update @index and get the next folio. */
+		folio_mark_dirty(folio);
+		folio_unlock(folio);
+		kunmap_local(kaddr);
+		folio_put(folio);
+		folio = read_mapping_folio(mapping, ++index, NULL);
+		if (IS_ERR(folio)) {
+			ntfs_error(vi->i_sb,
+				   "Failed to map subsequent page (error %li), aborting.",
+				   PTR_ERR(folio));
+			err = PTR_ERR(folio);
+			goto rollback;
+		}
+
+		folio_lock(folio);
+		kaddr = kmap_local_folio(folio, 0);
+		/*
+		 * Depending on @value, modify all remaining whole bytes in the
+		 * page up to @cnt.
+		 */
+		len = min_t(s64, cnt >> 3, PAGE_SIZE);
+		memset(kaddr, value ? 0xff : 0, len);
+		cnt -= len << 3;
+		if (ni->mft_no == FILE_Bitmap)
+			ntfs_set_lcn_empty_bits(vol, index, value, len << 3);
+	}
+	/*
+	 * The currently mapped page is the last one.  If the last byte is
+	 * partial, modify the appropriate bits in it.  Note, @len is the
+	 * position of the last byte inside the page.
+	 */
+	if (cnt) {
+		u8 *byte;
+
+		WARN_ON(cnt > 7);
+
+		bit = cnt;
+		byte = kaddr + len;
+		if (ni->mft_no == FILE_Bitmap)
+			ntfs_set_lcn_empty_bits(vol, index, value, bit);
+		while (bit--) {
+			if (value)
+				*byte |= 1 << bit;
+			else
+				*byte &= ~(1 << bit);
+		}
+	}
+done:
+	/* We are done.  Unmap the folio and return success. */
+	folio_mark_dirty(folio);
+	folio_unlock(folio);
+	kunmap_local(kaddr);
+	folio_put(folio);
+	ntfs_debug("Done.");
+	return 0;
+rollback:
+	/*
+	 * Current state:
+	 *	- no pages are mapped
+	 *	- @count - @cnt is the number of bits that have been modified
+	 */
+	if (is_rollback)
+		return err;
+	if (count != cnt)
+		pos = __ntfs_bitmap_set_bits_in_run(vi, start_bit, count - cnt,
+				value ? 0 : 1, true);
+	else
+		pos = 0;
+	if (!pos) {
+		/* Rollback was successful. */
+		ntfs_error(vi->i_sb,
+			"Failed to map subsequent page (error %i), aborting.",
+			err);
+	} else {
+		/* Rollback failed. */
+		ntfs_error(vi->i_sb,
+			"Failed to map subsequent page (error %i) and rollback failed (error %i). Aborting and leaving inconsistent metadata. Unmount and run chkdsk.",
+			err, pos);
+		NVolSetErrors(NTFS_SB(vi->i_sb));
+	}
+	return err;
+}