@@ -1139,7 +1139,7 @@ static int ext4_write_begin(struct file *file, struct address_space *mapping,
int ret, needed_blocks;
handle_t *handle;
int retries = 0;
- struct page *page;
+ struct folio *folio;
pgoff_t index;
unsigned from, to;
@@ -1166,68 +1166,69 @@ static int ext4_write_begin(struct file *file, struct address_space *mapping,
}
/*
- * grab_cache_page_write_begin() can take a long time if the
- * system is thrashing due to memory pressure, or if the page
+ * __filemap_get_folio() can take a long time if the
+ * system is thrashing due to memory pressure, or if the folio
* is being written back. So grab it first before we start
* the transaction handle. This also allows us to allocate
- * the page (if needed) without using GFP_NOFS.
+ * the folio (if needed) without using GFP_NOFS.
*/
retry_grab:
- page = grab_cache_page_write_begin(mapping, index);
- if (!page)
+ folio = __filemap_get_folio(mapping, index, FGP_WRITEBEGIN,
+ mapping_gfp_mask(mapping));
+ if (!folio)
return -ENOMEM;
/*
* The same as page allocation, we prealloc buffer heads before
* starting the handle.
*/
- if (!page_has_buffers(page))
- create_empty_buffers(page, inode->i_sb->s_blocksize, 0);
+ if (!folio_buffers(folio))
+ create_empty_buffers(&folio->page, inode->i_sb->s_blocksize, 0);
- unlock_page(page);
+ folio_unlock(folio);
retry_journal:
handle = ext4_journal_start(inode, EXT4_HT_WRITE_PAGE, needed_blocks);
if (IS_ERR(handle)) {
- put_page(page);
+ folio_put(folio);
return PTR_ERR(handle);
}
- lock_page(page);
- if (page->mapping != mapping) {
- /* The page got truncated from under us */
- unlock_page(page);
- put_page(page);
+ folio_lock(folio);
+ if (folio->mapping != mapping) {
+ /* The folio got truncated from under us */
+ folio_unlock(folio);
+ folio_put(folio);
ext4_journal_stop(handle);
goto retry_grab;
}
- /* In case writeback began while the page was unlocked */
- wait_for_stable_page(page);
+ /* In case writeback began while the folio was unlocked */
+ folio_wait_stable(folio);
#ifdef CONFIG_FS_ENCRYPTION
if (ext4_should_dioread_nolock(inode))
- ret = ext4_block_write_begin(page, pos, len,
+ ret = ext4_block_write_begin(&folio->page, pos, len,
ext4_get_block_unwritten);
else
- ret = ext4_block_write_begin(page, pos, len,
+ ret = ext4_block_write_begin(&folio->page, pos, len,
ext4_get_block);
#else
if (ext4_should_dioread_nolock(inode))
- ret = __block_write_begin(page, pos, len,
+ ret = __block_write_begin(&folio->page, pos, len,
ext4_get_block_unwritten);
else
- ret = __block_write_begin(page, pos, len, ext4_get_block);
+ ret = __block_write_begin(&folio->page, pos, len, ext4_get_block);
#endif
if (!ret && ext4_should_journal_data(inode)) {
ret = ext4_walk_page_buffers(handle, inode,
- page_buffers(page), from, to, NULL,
- do_journal_get_write_access);
+ folio_buffers(folio), from, to,
+ NULL, do_journal_get_write_access);
}
if (ret) {
bool extended = (pos + len > inode->i_size) &&
!ext4_verity_in_progress(inode);
- unlock_page(page);
+ folio_unlock(folio);
/*
* __block_write_begin may have instantiated a few blocks
* outside i_size. Trim these off again. Don't need
@@ -1255,10 +1256,10 @@ static int ext4_write_begin(struct file *file, struct address_space *mapping,
if (ret == -ENOSPC &&
ext4_should_retry_alloc(inode->i_sb, &retries))
goto retry_journal;
- put_page(page);
+ folio_put(folio);
return ret;
}
- *pagep = page;
+ *pagep = &folio->page;
return ret;
}
Remove a lot of calls to compound_head(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> --- fs/ext4/inode.c | 53 +++++++++++++++++++++++++------------------------ 1 file changed, 27 insertions(+), 26 deletions(-)