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ext4: Convert ext4_try_to_write_inline_data() 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/20230324180129.1220691-12-willy@infradead.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Matthew Wilcox 2023-03-24 18:01:11 +00:00 committed by Theodore Ts'o
parent 83eba701cf
commit f8f8c89f59
1 changed files with 11 additions and 13 deletions
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24
fs/ext4/inline.c
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@ -653,8 +653,7 @@ int ext4_try_to_write_inline_data(struct address_space *mapping,
{
int ret;
handle_t *handle;
unsigned int flags;
struct page *page;
struct folio *folio;
struct ext4_iloc iloc;
if (pos + len > ext4_get_max_inline_size(inode))
@ -691,28 +690,27 @@ int ext4_try_to_write_inline_data(struct address_space *mapping,
if (ret)
goto out;
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;
}
*pagep = page;
*pagep = &folio->page;
down_read(&EXT4_I(inode)->xattr_sem);
if (!ext4_has_inline_data(inode)) {
ret = 0;
unlock_page(page);
put_page(page);
folio_unlock(folio);
folio_put(folio);
goto out_up_read;
}
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) {
unlock_page(page);
put_page(page);
folio_unlock(folio);
folio_put(folio);
goto out_up_read;
}
}