Commit 08be56fe authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Theodore Ts'o
Browse files

ext4: remove references to bh->b_page 



Buffer heads are attached to folios, not to pages.  Also
flush_dcache_page() is now deprecated in favour of flush_dcache_folio().

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20250213182303.2133205-1-willy@infradead.org


Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
parent 7e91ae31

fs/ext4/inode.c

+1 −1
Original line number Diff line number Diff line
@@ -752,7 +752,7 @@ static void ext4_update_bh_state(struct buffer_head *bh, unsigned long flags) 
	flags &= EXT4_MAP_FLAGS;



	/* Dummy buffer_head? Set non-atomically. */

	if (!bh->b_page) {

	if (!bh->b_folio) {

		bh->b_state = (bh->b_state & ~EXT4_MAP_FLAGS) | flags;

		return;

	}

fs/ext4/super.c

+1 −1
Original line number Diff line number Diff line
@@ -7306,7 +7306,7 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type, 
	}

	lock_buffer(bh);

	memcpy(bh->b_data+offset, data, len);

	flush_dcache_page(bh->b_page);

	flush_dcache_folio(bh->b_folio);

	unlock_buffer(bh);

	err = ext4_handle_dirty_metadata(handle, NULL, bh);

	brelse(bh);

fs/jbd2/journal.c

+1 −1
Original line number Diff line number Diff line
@@ -947,7 +947,7 @@ int jbd2_journal_bmap(journal_t *journal, unsigned long blocknr, 
 * descriptor blocks we do need to generate bona fide buffers.

 *

 * After the caller of jbd2_journal_get_descriptor_buffer() has finished modifying

 * the buffer's contents they really should run flush_dcache_page(bh->b_page).

 * the buffer's contents they really should run flush_dcache_folio(bh->b_folio).

 * But we don't bother doing that, so there will be coherency problems with

 * mmaps of blockdevs which hold live JBD-controlled filesystems.

 */