treewide: change inode->i_ino from unsigned long to u64

On 32-bit architectures, unsigned long is only 32 bits wide, which
causes 64-bit inode numbers to be silently truncated. Several
filesystems (NFS, XFS, BTRFS, etc.) can generate inode numbers that
exceed 32 bits, and this truncation can lead to inode number collisions
and other subtle bugs on 32-bit systems.

Change the type of inode->i_ino from unsigned long to u64 to ensure that
inode numbers are always represented as 64-bit values regardless of
architecture. Update all format specifiers treewide from %lu/%lx to
%llu/%llx to match the new type, along with corresponding local variable
types.

This is the bulk treewide conversion. Earlier patches in this series
handled trace events separately to allow trace field reordering for
better struct packing on 32-bit.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20260304-iino-u64-v3-12-2257ad83d372@kernel.org
Acked-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>

4 files changed, 18 insertions, 17 deletions

diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index 395fc36c089b..278d4be8ecbe 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -141,7 +141,7 @@ out:
 Ebadsize:
 	if (!quiet)
 		ext2_error(sb, __func__,
-			"size of directory #%lu is not a multiple "
+			"size of directory #%llu is not a multiple "
 			"of chunk size", dir->i_ino);
 	goto fail;
 Eshort:
@@ -160,7 +160,7 @@ Einumber:
 	error = "inode out of bounds";
 bad_entry:
 	if (!quiet)
-		ext2_error(sb, __func__, "bad entry in directory #%lu: : %s - "
+		ext2_error(sb, __func__, "bad entry in directory #%llu: : %s - "
 			"offset=%llu, inode=%lu, rec_len=%d, name_len=%d",
 			dir->i_ino, error, folio_pos(folio) + offs,
 			(unsigned long) le32_to_cpu(p->inode),
@@ -170,7 +170,7 @@ Eend:
 	if (!quiet) {
 		p = (ext2_dirent *)(kaddr + offs);
 		ext2_error(sb, "ext2_check_folio",
-			"entry in directory #%lu spans the page boundary"
+			"entry in directory #%llu spans the page boundary"
 			"offset=%llu, inode=%lu",
 			dir->i_ino, folio_pos(folio) + offs,
 			(unsigned long) le32_to_cpu(p->inode));
@@ -281,7 +281,7 @@ ext2_readdir(struct file *file, struct dir_context *ctx)
 
 		if (IS_ERR(kaddr)) {
 			ext2_error(sb, __func__,
-				   "bad page in #%lu",
+				   "bad page in #%llu",
 				   inode->i_ino);
 			ctx->pos += PAGE_SIZE - offset;
 			return PTR_ERR(kaddr);
@@ -383,7 +383,7 @@ struct ext2_dir_entry_2 *ext2_find_entry (struct inode *dir,
 		/* next folio is past the blocks we've got */
 		if (unlikely(n > (dir->i_blocks >> (PAGE_SHIFT - 9)))) {
 			ext2_error(dir->i_sb, __func__,
-				"dir %lu size %lld exceeds block count %llu",
+				"dir %llu size %lld exceeds block count %llu",
 				dir->i_ino, dir->i_size,
 				(unsigned long long)dir->i_blocks);
 			goto out;
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index fdf63e9c6e7c..bf21b57cf98c 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -169,9 +169,10 @@ static void ext2_preread_inode(struct inode *inode)
 	unsigned long block_group;
 	unsigned long offset;
 	unsigned long block;
+	unsigned int ino = inode->i_ino;
 	struct ext2_group_desc * gdp;
 
-	block_group = (inode->i_ino - 1) / EXT2_INODES_PER_GROUP(inode->i_sb);
+	block_group = (ino - 1) / EXT2_INODES_PER_GROUP(inode->i_sb);
 	gdp = ext2_get_group_desc(inode->i_sb, block_group, NULL);
 	if (gdp == NULL)
 		return;
@@ -179,7 +180,7 @@ static void ext2_preread_inode(struct inode *inode)
 	/*
 	 * Figure out the offset within the block group inode table
 	 */
-	offset = ((inode->i_ino - 1) % EXT2_INODES_PER_GROUP(inode->i_sb)) *
+	offset = ((ino - 1) % EXT2_INODES_PER_GROUP(inode->i_sb)) *
 				EXT2_INODE_SIZE(inode->i_sb);
 	block = le32_to_cpu(gdp->bg_inode_table) +
 				(offset >> EXT2_BLOCK_SIZE_BITS(inode->i_sb));
@@ -381,7 +382,7 @@ static int find_group_other(struct super_block *sb, struct inode *parent)
 	 *
 	 * So add our directory's i_ino into the starting point for the hash.
 	 */
-	group = (group + parent->i_ino) % ngroups;
+	group = (group + (unsigned int)parent->i_ino) % ngroups;
 
 	/*
 	 * Use a quadratic hash to find a group with a free inode and some
@@ -589,7 +590,7 @@ got:
 		goto fail_free_drop;
 
 	mark_inode_dirty(inode);
-	ext2_debug("allocating inode %lu\n", inode->i_ino);
+	ext2_debug("allocating inode %llu\n", inode->i_ino);
 	ext2_preread_inode(inode);
 	return inode;
 
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index dbfe9098a124..45286c0c3b6b 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -1152,7 +1152,7 @@ static void ext2_free_branches(struct inode *inode, __le32 *p, __le32 *q, int de
 			 */ 
 			if (!bh) {
 				ext2_error(inode->i_sb, "ext2_free_branches",
-					"Read failure, inode=%ld, block=%ld",
+					"Read failure, inode=%llu, block=%ld",
 					inode->i_ino, nr);
 				continue;
 			}
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index c885dcc3bd0d..14ada70db36a 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -227,7 +227,7 @@ ext2_xattr_get(struct inode *inode, int name_index, const char *name,
 	if (!ext2_xattr_header_valid(HDR(bh))) {
 bad_block:
 		ext2_error(inode->i_sb, "ext2_xattr_get",
-			"inode %ld: bad block %d", inode->i_ino,
+			"inode %llu: bad block %d", inode->i_ino,
 			EXT2_I(inode)->i_file_acl);
 		error = -EIO;
 		goto cleanup;
@@ -313,7 +313,7 @@ ext2_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size)
 	if (!ext2_xattr_header_valid(HDR(bh))) {
 bad_block:
 		ext2_error(inode->i_sb, "ext2_xattr_list",
-			"inode %ld: bad block %d", inode->i_ino,
+			"inode %llu: bad block %d", inode->i_ino,
 			EXT2_I(inode)->i_file_acl);
 		error = -EIO;
 		goto cleanup;
@@ -454,7 +454,7 @@ ext2_xattr_set(struct inode *inode, int name_index, const char *name,
 		if (!ext2_xattr_header_valid(header)) {
 bad_block:
 			ext2_error(sb, "ext2_xattr_set",
-				"inode %ld: bad block %d", inode->i_ino, 
+				"inode %llu: bad block %d", inode->i_ino,
 				   EXT2_I(inode)->i_file_acl);
 			error = -EIO;
 			goto cleanup;
@@ -833,7 +833,7 @@ ext2_xattr_delete_inode(struct inode *inode)
 
 	if (!ext2_data_block_valid(sbi, EXT2_I(inode)->i_file_acl, 1)) {
 		ext2_error(inode->i_sb, "ext2_xattr_delete_inode",
-			"inode %ld: xattr block %d is out of data blocks range",
+			"inode %llu: xattr block %d is out of data blocks range",
 			inode->i_ino, EXT2_I(inode)->i_file_acl);
 		goto cleanup;
 	}
@@ -841,14 +841,14 @@ ext2_xattr_delete_inode(struct inode *inode)
 	bh = sb_bread(inode->i_sb, EXT2_I(inode)->i_file_acl);
 	if (!bh) {
 		ext2_error(inode->i_sb, "ext2_xattr_delete_inode",
-			"inode %ld: block %d read error", inode->i_ino,
+			"inode %llu: block %d read error", inode->i_ino,
 			EXT2_I(inode)->i_file_acl);
 		goto cleanup;
 	}
 	ea_bdebug(bh, "b_count=%d", atomic_read(&(bh->b_count)));
 	if (!ext2_xattr_header_valid(HDR(bh))) {
 		ext2_error(inode->i_sb, "ext2_xattr_delete_inode",
-			"inode %ld: bad block %d", inode->i_ino,
+			"inode %llu: bad block %d", inode->i_ino,
 			EXT2_I(inode)->i_file_acl);
 		goto cleanup;
 	}
@@ -952,7 +952,7 @@ ext2_xattr_cache_find(struct inode *inode, struct ext2_xattr_header *header)
 		bh = sb_bread(inode->i_sb, ce->e_value);
 		if (!bh) {
 			ext2_error(inode->i_sb, "ext2_xattr_cache_find",
-				"inode %ld: block %ld read error",
+				"inode %llu: block %ld read error",
 				inode->i_ino, (unsigned long) ce->e_value);
 		} else {
 			lock_buffer(bh);