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fs: Switch inode_has_buffers() to take mapping_metadata_bhs

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As part of a move towards placing mapping_metadata_bhs in fs-private
inode part, switch inode_has_buffers() to take mapping_metadata_bhs
and rename the function to mmb_has_buffers().

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20260326095354.16340-74-jack@suse.cz
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Jan Kara 2026-03-26 10:54:26 +01:00 committed by Christian Brauner
parent c86f5d2551
commit 025c9af1a2
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GPG Key ID: 91C61BC06578DCA2
3 changed files with 9 additions and 9 deletions
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14
fs/buffer.c
View File

@ -468,7 +468,7 @@ EXPORT_SYMBOL(mark_buffer_async_write);
* written back and waited upon before fsync() returns.
*
* The functions mark_buffer_dirty_inode(), fsync_inode_buffers(),
* inode_has_buffers() and invalidate_inode_buffers() are provided for the
* mmb_has_buffers() and invalidate_inode_buffers() are provided for the
* management of a list of dependent buffers in mapping_metadata_bhs struct.
*
* The locking is a little subtle: The list of buffer heads is protected by
@ -526,11 +526,11 @@ static void remove_assoc_queue(struct buffer_head *bh)
}
}
int inode_has_buffers(struct inode *inode)
bool mmb_has_buffers(struct mapping_metadata_bhs *mmb)
{
return !list_empty(&inode->i_data.i_metadata_bhs.list);
return !list_empty(&mmb->list);
}
EXPORT_SYMBOL_GPL(inode_has_buffers);
EXPORT_SYMBOL_GPL(mmb_has_buffers);
/**
* sync_mapping_buffers - write out & wait upon a mapping's "associated" buffers
@ -561,7 +561,7 @@ int sync_mapping_buffers(struct address_space *mapping)
struct blk_plug plug;
LIST_HEAD(tmp);
if (list_empty(&mmb->list))
if (!mmb_has_buffers(mmb))
return 0;
blk_start_plug(&plug);
@ -803,9 +803,9 @@ EXPORT_SYMBOL(block_dirty_folio);
*/
void invalidate_inode_buffers(struct inode *inode)
{
if (inode_has_buffers(inode)) {
struct mapping_metadata_bhs *mmb = &inode->i_data.i_metadata_bhs;
struct mapping_metadata_bhs *mmb = &inode->i_data.i_metadata_bhs;
if (mmb_has_buffers(mmb)) {
spin_lock(&mmb->lock);
while (!list_empty(&mmb->list))
__remove_assoc_queue(mmb, BH_ENTRY(mmb->list.next));

2
fs/ext4/inode.c
View File

@ -3436,7 +3436,7 @@ static bool ext4_inode_datasync_dirty(struct inode *inode)
}
/* Any metadata buffers to write? */
if (inode_has_buffers(inode))
if (mmb_has_buffers(&inode->i_mapping->i_metadata_bhs))
return true;
return inode_state_read_once(inode) & I_DIRTY_DATASYNC;
}

2
include/linux/buffer_head.h
View File

@ -515,7 +515,7 @@ bool block_dirty_folio(struct address_space *mapping, struct folio *folio);
void buffer_init(void);
bool try_to_free_buffers(struct folio *folio);
int inode_has_buffers(struct inode *inode);
bool mmb_has_buffers(struct mapping_metadata_bhs *mmb);
void invalidate_inode_buffers(struct inode *inode);
int sync_mapping_buffers(struct address_space *mapping);
void invalidate_bh_lrus(void);