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f2fs: Use a folio in redirty_blocks()

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Support large folios & simplify the loops in redirty_blocks().
Use the folio APIs and remove four calls to compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2025-03-31 21:12:42 +01:00 committed by Jaegeuk Kim
parent b02a903218
commit 5951fee46b
1 changed files with 20 additions and 18 deletions
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38
fs/f2fs/file.c
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@ -4347,34 +4347,36 @@ static int redirty_blocks(struct inode *inode, pgoff_t page_idx, int len)
{
DEFINE_READAHEAD(ractl, NULL, NULL, inode->i_mapping, page_idx);
struct address_space *mapping = inode->i_mapping;
struct page *page;
struct folio *folio;
pgoff_t redirty_idx = page_idx;
int i, page_len = 0, ret = 0;
int page_len = 0, ret = 0;
page_cache_ra_unbounded(&ractl, len, 0);
for (i = 0; i < len; i++, page_idx++) {
page = read_cache_page(mapping, page_idx, NULL, NULL);
if (IS_ERR(page)) {
ret = PTR_ERR(page);
do {
folio = read_cache_folio(mapping, page_idx, NULL, NULL);
if (IS_ERR(folio)) {
ret = PTR_ERR(folio);
break;
}
page_len++;
}
page_len += folio_nr_pages(folio) - (page_idx - folio->index);
page_idx = folio_next_index(folio);
} while (page_len < len);
for (i = 0; i < page_len; i++, redirty_idx++) {
page = find_lock_page(mapping, redirty_idx);
do {
folio = filemap_lock_folio(mapping, redirty_idx);
/* It will never fail, when page has pinned above */
f2fs_bug_on(F2FS_I_SB(inode), !page);
/* It will never fail, when folio has pinned above */
f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(folio));
f2fs_wait_on_page_writeback(page, DATA, true, true);
f2fs_folio_wait_writeback(folio, DATA, true, true);
set_page_dirty(page);
set_page_private_gcing(page);
f2fs_put_page(page, 1);
f2fs_put_page(page, 0);
}
folio_mark_dirty(folio);
set_page_private_gcing(&folio->page);
redirty_idx = folio_next_index(folio);
folio_unlock(folio);
folio_put_refs(folio, 2);
} while (redirty_idx < page_idx);
return ret;
}