Merge tag 'affs-for-6.6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull affs updates from David Sterba:
 "Two minor updates for AFFS:

   - reimplement writepage() address space callback on top of
     migrate_folio()

   - fix a build warning, local parameters 'toupper' collide with the
     standard ctype.h name"

* tag 'affs-for-6.6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  affs: rename local toupper() to fn() to avoid confusion
  affs: remove writepage implementation

Author: torvalds

fs/affs/file.c

@@ -15,6 +15,7 @@
 
 #include <linux/uio.h>
 #include <linux/blkdev.h>
+#include <linux/mpage.h>
 #include "affs.h"
 
 static struct buffer_head *affs_get_extblock_slow(struct inode *inode, u32 ext);
@@ -370,9 +371,10 @@ affs_get_block(struct inode *inode, sector_t block, struct buffer_head *bh_resul
 	return -ENOSPC;
 }
 
-static int affs_writepage(struct page *page, struct writeback_control *wbc)
+static int affs_writepages(struct address_space *mapping,
+			   struct writeback_control *wbc)
 {
-	return block_write_full_page(page, affs_get_block, wbc);
+	return mpage_writepages(mapping, wbc, affs_get_block);
 }
 
 static int affs_read_folio(struct file *file, struct folio *folio)
@@ -456,10 +458,11 @@ const struct address_space_operations affs_aops = {
 	.dirty_folio	= block_dirty_folio,
 	.invalidate_folio = block_invalidate_folio,
 	.read_folio = affs_read_folio,
-	.writepage = affs_writepage,
+	.writepages = affs_writepages,
 	.write_begin = affs_write_begin,
 	.write_end = affs_write_end,
 	.direct_IO = affs_direct_IO,
+	.migrate_folio = buffer_migrate_folio,
 	.bmap = _affs_bmap
 };
 
@@ -835,9 +838,10 @@ const struct address_space_operations affs_aops_ofs = {
 	.dirty_folio	= block_dirty_folio,
 	.invalidate_folio = block_invalidate_folio,
 	.read_folio = affs_read_folio_ofs,
-	//.writepage = affs_writepage_ofs,
+	//.writepages = affs_writepages_ofs,
 	.write_begin = affs_write_begin_ofs,
-	.write_end = affs_write_end_ofs
+	.write_end = affs_write_end_ofs,
+	.migrate_folio = filemap_migrate_folio,
 };
 
 /* Free any preallocated blocks. */

fs/affs/namei.c

@@ -43,7 +43,7 @@ affs_get_toupper(struct super_block *sb)
  * Note: the dentry argument is the parent dentry.
  */
 static inline int
-__affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr, toupper_t toupper, bool notruncate)
+__affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr, toupper_t fn, bool notruncate)
 {
 	const u8 *name = qstr->name;
 	unsigned long hash;
@@ -57,7 +57,7 @@ __affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr, toupper_t tou
 	hash = init_name_hash(dentry);
 	len = min(qstr->len, AFFSNAMEMAX);
 	for (; len > 0; name++, len--)
-		hash = partial_name_hash(toupper(*name), hash);
+		hash = partial_name_hash(fn(*name), hash);
 	qstr->hash = end_name_hash(hash);
 
 	return 0;
@@ -80,7 +80,7 @@ affs_intl_hash_dentry(const struct dentry *dentry, struct qstr *qstr)
 }
 
 static inline int __affs_compare_dentry(unsigned int len,
-		const char *str, const struct qstr *name, toupper_t toupper,
+		const char *str, const struct qstr *name, toupper_t fn,
 		bool notruncate)
 {
 	const u8 *aname = str;
@@ -106,7 +106,7 @@ static inline int __affs_compare_dentry(unsigned int len,
 		return 1;
 
 	for (; len > 0; len--)
-		if (toupper(*aname++) != toupper(*bname++))
+		if (fn(*aname++) != fn(*bname++))
 			return 1;
 
 	return 0;
@@ -135,7 +135,7 @@ affs_intl_compare_dentry(const struct dentry *dentry,
  */
 
 static inline int
-affs_match(struct dentry *dentry, const u8 *name2, toupper_t toupper)
+affs_match(struct dentry *dentry, const u8 *name2, toupper_t fn)
 {
 	const u8 *name = dentry->d_name.name;
 	int len = dentry->d_name.len;
@@ -148,20 +148,20 @@ affs_match(struct dentry *dentry, const u8 *name2, toupper_t toupper)
 		return 0;
 
 	for (name2++; len > 0; len--)
-		if (toupper(*name++) != toupper(*name2++))
+		if (fn(*name++) != fn(*name2++))
 			return 0;
 	return 1;
 }
 
 int
 affs_hash_name(struct super_block *sb, const u8 *name, unsigned int len)
 {
-	toupper_t toupper = affs_get_toupper(sb);
+	toupper_t fn = affs_get_toupper(sb);
 	u32 hash;
 
 	hash = len = min(len, AFFSNAMEMAX);
 	for (; len > 0; len--)
-		hash = (hash * 13 + toupper(*name++)) & 0x7ff;
+		hash = (hash * 13 + fn(*name++)) & 0x7ff;
 
 	return hash % AFFS_SB(sb)->s_hashsize;
 }
@@ -171,7 +171,7 @@ affs_find_entry(struct inode *dir, struct dentry *dentry)
 {
 	struct super_block *sb = dir->i_sb;
 	struct buffer_head *bh;
-	toupper_t toupper = affs_get_toupper(sb);
+	toupper_t fn = affs_get_toupper(sb);
 	u32 key;
 
 	pr_debug("%s(\"%pd\")\n", __func__, dentry);
@@ -189,7 +189,7 @@ affs_find_entry(struct inode *dir, struct dentry *dentry)
 		bh = affs_bread(sb, key);
 		if (!bh)
 			return ERR_PTR(-EIO);
-		if (affs_match(dentry, AFFS_TAIL(sb, bh)->name, toupper))
+		if (affs_match(dentry, AFFS_TAIL(sb, bh)->name, fn))
 			return bh;
 		key = be32_to_cpu(AFFS_TAIL(sb, bh)->hash_chain);
 	}