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ext4: Convert ext4_da_write_inline_data_begin() to use a folio 

Saves a number of calls to compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://lore.kernel.org/r/20230324180129.1220691-14-willy@infradead.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Matthew Wilcox 2023-03-24 18:01:13 +00:00 committed by Theodore Ts'o
parent 4ed9b598ac
commit 9a9d01f081
1 changed files with 9 additions and 11 deletions
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20
fs/ext4/inline.c
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@ -909,10 +909,9 @@ int ext4_da_write_inline_data_begin(struct address_space *mapping,
{
int ret;
handle_t *handle;
struct page *page;
struct folio *folio;
struct ext4_iloc iloc;
int retries = 0;
unsigned int flags;
ret = ext4_get_inode_loc(inode, &iloc);
if (ret)
@ -944,10 +943,9 @@ retry_journal:
* We cannot recurse into the filesystem as the transaction
* is already started.
*/
flags = memalloc_nofs_save();
page = grab_cache_page_write_begin(mapping, 0);
memalloc_nofs_restore(flags);
if (!page) {
folio = __filemap_get_folio(mapping, 0, FGP_WRITEBEGIN | FGP_NOFS,
mapping_gfp_mask(mapping));
if (!folio) {
ret = -ENOMEM;
goto out_journal;
}
@ -958,8 +956,8 @@ retry_journal:
goto out_release_page;
}
if (!PageUptodate(page)) {
ret = ext4_read_inline_page(inode, page);
if (!folio_test_uptodate(folio)) {
ret = ext4_read_inline_page(inode, &folio->page);
if (ret < 0)
goto out_release_page;
}
@ -969,13 +967,13 @@ retry_journal:
goto out_release_page;
up_read(&EXT4_I(inode)->xattr_sem);
*pagep = page;
*pagep = &folio->page;
brelse(iloc.bh);
return 1;
out_release_page:
up_read(&EXT4_I(inode)->xattr_sem);
unlock_page(page);
put_page(page);
folio_unlock(folio);
folio_put(folio);
out_journal:
ext4_journal_stop(handle);
out: