diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2025-04-02 15:59:55 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-04-07 09:36:48 +0200 |
| commit | 03ddd7725ed1b39cf9251e1a420559f25dac49b3 (patch) | |
| tree | 5f5465e89c1f5d77b1a05558d3175142cb79c027 | |
| parent | 0af2f6be1b4281385b618cb86ad946eded089ac8 (diff) | |
9p: Add a migrate_folio method
The migration code used to be able to migrate dirty 9p folios by writing
them back using writepage. When the writepage method was removed,
we neglected to add a migrate_folio method, which means that dirty 9p
folios have been unmovable ever since. This reduced our success at
defragmenting memory on machines which use 9p heavily.
Fixes: 80105ed2fd27 (9p: Use netfslib read/write_iter)
Cc: stable@vger.kernel.org
Cc: David Howells <dhowells@redhat.com>
Cc: v9fs@lists.linux.dev
Signed-off-by: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Link: https://lore.kernel.org/r/20250402150005.2309458-2-willy@infradead.org
Acked-by: Dominique Martinet <asmadeus@codewreck.org>
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | fs/9p/vfs_addr.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index 32619d146cbc..1286d96a29bc 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -164,4 +164,5 @@ const struct address_space_operations v9fs_addr_operations = { .invalidate_folio = netfs_invalidate_folio, .direct_IO = noop_direct_IO, .writepages = netfs_writepages, + .migrate_folio = filemap_migrate_folio, }; |