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ext4: remove references to bh->b_page

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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: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20250213182303.2133205-1-willy@infradead.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Matthew Wilcox (Oracle) 2025-02-13 18:23:01 +00:00 committed by Theodore Ts'o
parent 7e91ae31e2
commit 08be56fec0
3 changed files with 3 additions and 3 deletions
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2
fs/ext4/inode.c
View File

@ -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;
}

2
fs/ext4/super.c
View File

@ -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);

2
fs/jbd2/journal.c
View File

@ -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.
*/