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buffer: use b_folio in mark_buffer_dirty() 

Removes about four calls to compound_head().  Two of them are inline which
removes 132 bytes from the kernel text.

Link: https://lkml.kernel.org/r/20221215214402.3522366-8-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-12-15 21:43:57 +00:00 committed by Andrew Morton
parent c10d91194d
commit cf1d3417e6
1 changed files with 6 additions and 6 deletions
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12
fs/buffer.c
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@ -1095,16 +1095,16 @@ void mark_buffer_dirty(struct buffer_head *bh)
} }
if (!test_set_buffer_dirty(bh)) { if (!test_set_buffer_dirty(bh)) {
struct page *page = bh->b_page; struct folio *folio = bh->b_folio;
struct address_space *mapping = NULL; struct address_space *mapping = NULL;
lock_page_memcg(page); folio_memcg_lock(folio);
if (!TestSetPageDirty(page)) { if (!folio_test_set_dirty(folio)) {
mapping = page_mapping(page); mapping = folio->mapping;
if (mapping) if (mapping)
__set_page_dirty(page, mapping, 0); __folio_mark_dirty(folio, mapping, 0);
} }
unlock_page_memcg(page); folio_memcg_unlock(folio);
if (mapping) if (mapping)
__mark_inode_dirty(mapping->host, I_DIRTY_PAGES); __mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
} }