From fffca572f9ca51607f180a37d0c898404c8f9112 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 26 Mar 2026 15:06:31 +0100 Subject: mpage: Provide variant of mpage_writepages() with own optional folio handler Some filesystems need to treat some folios specially (for example for inodes with inline data). Doing the handling in their .writepages method in a race-free manner results in duplicating some of the writeback internals. So provide generalized version of mpage_writepages() that allows filesystem to provide a handler called for each folio which can handle the folio in a special way. Reviewed-by: Christoph Hellwig Link: https://patch.msgid.link/20260326140635.15895-3-jack@suse.cz Signed-off-by: Jan Kara --- include/linux/mpage.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux/mpage.h') diff --git a/include/linux/mpage.h b/include/linux/mpage.h index 1bdc39daac0a..358946990bfa 100644 --- a/include/linux/mpage.h +++ b/include/linux/mpage.h @@ -17,7 +17,14 @@ struct readahead_control; void mpage_readahead(struct readahead_control *, get_block_t get_block); int mpage_read_folio(struct folio *folio, get_block_t get_block); -int mpage_writepages(struct address_space *mapping, - struct writeback_control *wbc, get_block_t get_block); +int __mpage_writepages(struct address_space *mapping, + struct writeback_control *wbc, get_block_t get_block, + int (*write_folio)(struct folio *folio, + struct writeback_control *wbc)); +static inline int mpage_writepages(struct address_space *mapping, + struct writeback_control *wbc, get_block_t get_block) +{ + return __mpage_writepages(mapping, wbc, get_block, NULL); +} #endif -- cgit v1.2.3