From 6870892b6437bf7bdf37ca875bf842fe1e1385df Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Fri, 24 Oct 2025 18:08:11 +0100 Subject: [PATCH] buffer: Use folio_next_pos() This is one instruction more efficient than open-coding folio_pos() + folio_size(). It's the equivalent of (x + y) << z rather than x << z + y << z. Signed-off-by: Matthew Wilcox (Oracle) Link: https://patch.msgid.link/20251024170822.1427218-4-willy@infradead.org Reviewed-by: Jan Kara Reviewed-by: Christoph Hellwig Cc: Jan Kara Signed-off-by: Christian Brauner --- fs/buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/buffer.c b/fs/buffer.c index 6a8752f7bbedb..185ceb0d6baa2 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -2732,7 +2732,7 @@ int block_write_full_folio(struct folio *folio, struct writeback_control *wbc, loff_t i_size = i_size_read(inode); /* Is the folio fully inside i_size? */ - if (folio_pos(folio) + folio_size(folio) <= i_size) + if (folio_next_pos(folio) <= i_size) return __block_write_full_folio(inode, folio, get_block, wbc); /* Is the folio fully outside i_size? (truncate in progress) */ -- 2.47.3