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gfs2: Add a migrate_folio operation for journalled files

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For journalled data, folio migration currently works by writing the folio
back, freeing the folio and faulting the new folio back in.  We can
bypass that by telling the migration code to migrate the buffer_heads
attached to our folios.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Matthew Wilcox (Oracle) 2024-04-03 18:23:49 +01:00 committed by Andreas Gruenbacher
parent 75377ae754
commit b844048011
1 changed files with 2 additions and 2 deletions
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4
fs/gfs2/aops.c
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@ -116,8 +116,7 @@ static int gfs2_write_jdata_folio(struct folio *folio,
* @folio: The folio to write
* @wbc: The writeback control
*
* This is shared between writepage and writepages and implements the
* core of the writepage operation. If a transaction is required then
* Implements the core of write back. If a transaction is required then
* the checked flag will have been set and the transaction will have
* already been started before this is called.
*/
@ -755,6 +754,7 @@ static const struct address_space_operations gfs2_jdata_aops = {
.readahead = gfs2_readahead,
.dirty_folio = jdata_dirty_folio,
.bmap = gfs2_bmap,
.migrate_folio = buffer_migrate_folio,
.invalidate_folio = gfs2_invalidate_folio,
.release_folio = gfs2_release_folio,
.is_partially_uptodate = block_is_partially_uptodate,