This involves changing ext2_find_entry(), ext2_dotdot(),
ext2_inode_by_name(), ext2_set_link() and ext2_delete_entry() to
take a folio. These were also the last users of ext2_get_page() and
ext2_put_page(), so remove those at the same time.
---
fs/ext2/dir.c | 75 ++++++++++++++++++++-----------------------------
fs/ext2/ext2.h | 23 ++++++---------
fs/ext2/namei.c | 32 ++++++++++-----------
3 files changed, 55 insertions(+), 75 deletions(-)
diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index 7e75cfaa709c..dad71ef38395 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -209,17 +209,6 @@ static void *ext2_get_folio(struct inode *dir, unsigned long n,
return ERR_PTR(-EIO);
}
-static void *ext2_get_page(struct inode *dir, unsigned long n,
- int quiet, struct page **pagep)
-{
- struct folio *folio;
- void *kaddr = ext2_get_folio(dir, n, quiet, &folio);
-
- if (!IS_ERR(kaddr))
- *pagep = &folio->page;
- return kaddr;
-}
-
/*
* NOTE! unlike strncmp, ext2_match returns 1 for success, 0 for failure.
*
@@ -342,38 +331,35 @@ ext2_readdir(struct file *file, struct dir_context *ctx)
* and the entry itself. Page is returned mapped and unlocked.
* Entry is guaranteed to be valid.
*
- * On Success ext2_put_page() should be called on *res_page.
+ * On Success folio_release_kmap() should be called on *foliop.
*
- * NOTE: Calls to ext2_get_page()/ext2_put_page() must be nested according to
- * the rules documented in kmap_local_page()/kunmap_local().
+ * NOTE: Calls to ext2_get_folio()/folio_release_kmap() must be nested
+ * according to the rules documented in kmap_local_folio()/kunmap_local().
*
- * ext2_find_entry() and ext2_dotdot() act as a call to ext2_get_page() and
- * should be treated as a call to ext2_get_page() for nesting purposes.
+ * ext2_find_entry() and ext2_dotdot() act as a call to ext2_get_folio()
+ * and should be treated as a call to ext2_get_folio() for nesting
+ * purposes.
*/
struct ext2_dir_entry_2 *ext2_find_entry (struct inode *dir,
- const struct qstr *child, struct page **res_page)
+ const struct qstr *child, struct folio **foliop)
{
const char *name = child->name;
int namelen = child->len;
unsigned reclen = EXT2_DIR_REC_LEN(namelen);
unsigned long start, n;
unsigned long npages = dir_pages(dir);
- struct page *page = NULL;
struct ext2_inode_info *ei = EXT2_I(dir);
ext2_dirent * de;
if (npages == 0)
goto out;
- /* OFFSET_CACHE */
- *res_page = NULL;
-
start = ei->i_dir_start_lookup;
if (start >= npages)
start = 0;
n = start;
do {
- char *kaddr = ext2_get_page(dir, n, 0, &page);
+ char *kaddr = ext2_get_folio(dir, n, 0, foliop);
if (IS_ERR(kaddr))
return ERR_CAST(kaddr);
@@ -383,18 +369,18 @@ struct ext2_dir_entry_2 *ext2_find_entry (struct inode *dir,
if (de->rec_len == 0) {
ext2_error(dir->i_sb, __func__,
"zero-length directory entry");
- ext2_put_page(page, de);
+ folio_release_kmap(*foliop, de);
goto out;
}
if (ext2_match(namelen, name, de))
goto found;
de = ext2_next_entry(de);
}
- ext2_put_page(page, kaddr);
+ folio_release_kmap(*foliop, kaddr);
if (++n >= npages)
n = 0;
- /* next page is past the blocks we've got */
+ /* 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",
@@ -407,7 +393,6 @@ struct ext2_dir_entry_2 *ext2_find_entry (struct inode *dir,
return ERR_PTR(-ENOENT);
found:
- *res_page = page;
ei->i_dir_start_lookup = n;
return de;
}
@@ -416,17 +401,18 @@ struct ext2_dir_entry_2 *ext2_find_entry (struct inode *dir,
* Return the '..' directory entry and the page in which the entry was found
* (as a parameter - p).
*
- * On Success ext2_put_page() should be called on *p.
+ * On Success folio_release_kmap() should be called on *foliop.
*
- * NOTE: Calls to ext2_get_page()/ext2_put_page() must be nested according to
- * the rules documented in kmap_local_page()/kunmap_local().
+ * NOTE: Calls to ext2_get_folio()/folio_release_kmap() must be nested
+ * according to the rules documented in kmap_local_folio()/kunmap_local().
*
- * ext2_find_entry() and ext2_dotdot() act as a call to ext2_get_page() and
- * should be treated as a call to ext2_get_page() for nesting purposes.
+ * ext2_find_entry() and ext2_dotdot() act as a call to ext2_get_folio()
+ * and should be treated as a call to ext2_get_folio() for nesting
+ * purposes.
*/
-struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct page **p)
+struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct folio **foliop)
{
- ext2_dirent *de = ext2_get_page(dir, 0, 0, p);
+ ext2_dirent *de = ext2_get_folio(dir, 0, 0, foliop);
if (!IS_ERR(de))
return ext2_next_entry(de);
@@ -436,14 +422,14 @@ struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct page **p)
int ext2_inode_by_name(struct inode *dir, const struct qstr *child, ino_t *ino)
{
struct ext2_dir_entry_2 *de;
- struct page *page;
-
- de = ext2_find_entry(dir, child, &page);
+ struct folio *folio;
+
+ de = ext2_find_entry(dir, child, &folio);
if (IS_ERR(de))
return PTR_ERR(de);
*ino = le32_to_cpu(de->inode);
- ext2_put_page(page, de);
+ folio_release_kmap(folio, de);
return 0;
}
@@ -464,21 +450,21 @@ static int ext2_handle_dirsync(struct inode *dir)
}
int ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
- struct page *page, struct inode *inode, bool update_times)
+ struct folio *folio, struct inode *inode, bool update_times)
{
- loff_t pos = page_offset(page) + offset_in_page(de);
+ loff_t pos = folio_pos(folio) + offset_in_folio(folio, de);
unsigned len = ext2_rec_len_from_disk(de->rec_len);
int err;
- lock_page(page);
- err = ext2_prepare_chunk(page, pos, len);
+ folio_lock(folio);
+ err = ext2_prepare_chunk(&folio->page, pos, len);
if (err) {
- unlock_page(page);
+ folio_unlock(folio);
return err;
}
de->inode = cpu_to_le32(inode->i_ino);
ext2_set_de_type(de, inode);
- ext2_commit_chunk(page, pos, len);
+ ext2_commit_chunk(&folio->page, pos, len);
if (update_times)
dir->i_mtime = inode_set_ctime_current(dir);
EXT2_I(dir)->i_flags &= ~EXT2_BTREE_FL;
@@ -584,9 +570,8 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
* ext2_delete_entry deletes a directory entry by merging it with the
* previous entry. Page is up-to-date.
*/
-int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct page *page)
+int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct folio *folio)
{
- struct folio *folio = page_folio(page);
struct inode *inode = folio->mapping->host;
size_t from, to;
char *kaddr;
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index 7fdd685c384d..677a9ad45dcb 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -717,22 +717,17 @@ extern void ext2_init_block_alloc_info(struct inode *);
extern void ext2_rsv_window_add(struct super_block *sb, struct ext2_reserve_window_node *rsv);
/* dir.c */
-extern int ext2_add_link (struct dentry *, struct inode *);
-extern int ext2_inode_by_name(struct inode *dir,
+int ext2_add_link(struct dentry *, struct inode *);
+int ext2_inode_by_name(struct inode *dir,
const struct qstr *child, ino_t *ino);
-extern int ext2_make_empty(struct inode *, struct inode *);
-extern struct ext2_dir_entry_2 *ext2_find_entry(struct inode *, const struct qstr *,
- struct page **);
-extern int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct page *page);
-extern int ext2_empty_dir (struct inode *);
-extern struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct page **p);
+int ext2_make_empty(struct inode *, struct inode *);
+struct ext2_dir_entry_2 *ext2_find_entry(struct inode *, const struct qstr *,
+ struct folio **foliop);
+int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct folio *folio);
+int ext2_empty_dir(struct inode *);
+struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct folio **foliop);
int ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
- struct page *page, struct inode *inode, bool update_times);
-static inline void ext2_put_page(struct page *page, void *page_addr)
-{
- kunmap_local(page_addr);
- put_page(page);
-}
+ struct folio *folio, struct inode *inode, bool update_times);
/* ialloc.c */
extern struct inode * ext2_new_inode (struct inode *, umode_t, const struct qstr *);
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index 059517068adc..65f702b1da5b 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -273,21 +273,21 @@ static int ext2_unlink(struct inode *dir, struct dentry *dentry)
{
struct inode *inode = d_inode(dentry);
struct ext2_dir_entry_2 *de;
- struct page *page;
+ struct folio *folio;
int err;
err = dquot_initialize(dir);
if (err)
goto out;
- de = ext2_find_entry(dir, &dentry->d_name, &page);
+ de = ext2_find_entry(dir, &dentry->d_name, &folio);
if (IS_ERR(de)) {
err = PTR_ERR(de);
goto out;
}
- err = ext2_delete_entry(de, page);
- ext2_put_page(page, de);
+ err = ext2_delete_entry(de, folio);
+ folio_release_kmap(folio, de);
if (err)
goto out;
@@ -321,9 +321,9 @@ static int ext2_rename (struct mnt_idmap * idmap,
{
struct inode * old_inode = d_inode(old_dentry);
struct inode * new_inode = d_inode(new_dentry);
- struct page * dir_page = NULL;
+ struct folio *dir_folio = NULL;
struct ext2_dir_entry_2 * dir_de = NULL;
- struct page * old_page;
+ struct folio * old_folio;
struct ext2_dir_entry_2 * old_de;
int err;
@@ -338,19 +338,19 @@ static int ext2_rename (struct mnt_idmap * idmap,
if (err)
return err;
- old_de = ext2_find_entry(old_dir, &old_dentry->d_name, &old_page);
+ old_de = ext2_find_entry(old_dir, &old_dentry->d_name, &old_folio);
if (IS_ERR(old_de))
return PTR_ERR(old_de);
if (S_ISDIR(old_inode->i_mode)) {
err = -EIO;
- dir_de = ext2_dotdot(old_inode, &dir_page);
+ dir_de = ext2_dotdot(old_inode, &dir_folio);
if (!dir_de)
goto out_old;
}
if (new_inode) {
- struct page *new_page;
+ struct folio *new_folio;
struct ext2_dir_entry_2 *new_de;
err = -ENOTEMPTY;
@@ -358,13 +358,13 @@ static int ext2_rename (struct mnt_idmap * idmap,
goto out_dir;
new_de = ext2_find_entry(new_dir, &new_dentry->d_name,
- &new_page);
+ &new_folio);
if (IS_ERR(new_de)) {
err = PTR_ERR(new_de);
goto out_dir;
}
- err = ext2_set_link(new_dir, new_de, new_page, old_inode, true);
- ext2_put_page(new_page, new_de);
+ err = ext2_set_link(new_dir, new_de, new_folio, old_inode, true);
+ folio_release_kmap(new_folio, new_de);
if (err)
goto out_dir;
inode_set_ctime_current(new_inode);
@@ -386,19 +386,19 @@ static int ext2_rename (struct mnt_idmap * idmap,
inode_set_ctime_current(old_inode);
mark_inode_dirty(old_inode);
- err = ext2_delete_entry(old_de, old_page);
+ err = ext2_delete_entry(old_de, old_folio);
if (!err && dir_de) {
if (old_dir != new_dir)
- err = ext2_set_link(old_inode, dir_de, dir_page,
+ err = ext2_set_link(old_inode, dir_de, dir_folio,
new_dir, false);
inode_dec_link_count(old_dir);
}
out_dir:
if (dir_de)
- ext2_put_page(dir_page, dir_de);
+ folio_release_kmap(dir_folio, dir_de);
out_old:
- ext2_put_page(old_page, old_de);
+ folio_release_kmap(old_folio, old_de);
return err;
}
--
2.40.1
