[PATCH v2 5/8] fs/buffer fs/mpage: remove large folio restriction

Luis Chamberlain
2025-02-04T23:12:14Z

Now that buffer-heads has been converted over to support large folios
we can remove the built-in VM_BUG_ON_FOLIO() checks which prevents
their use.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
fs/buffer.c | 2 --
fs/mpage.c | 3 ---
2 files changed, 5 deletions(-)

diff --git a/fs/buffer.c b/fs/buffer.c
index 167fa3e33566..194eacbefc95 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2371,8 +2371,6 @@ int block_read_full_folio(struct folio *folio, get_block_t *get_block)
if (IS_ENABLED(CONFIG_FS_VERITY) && IS_VERITY(inode))
limit = inode->i_sb->s_maxbytes;

- VM_BUG_ON_FOLIO(folio_test_large(folio), folio);
-
head = folio_create_buffers(folio, inode, 0);
blocksize = head->b_size;

diff --git a/fs/mpage.c b/fs/mpage.c
index c17d7a724e4b..031230531a2a 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -170,9 +170,6 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args)
unsigned relative_block;
gfp_t gfp = mapping_gfp_constraint(folio->mapping, GFP_KERNEL);

- /* MAX_BUF_PER_PAGE, for example */
- VM_BUG_ON_FOLIO(folio_test_large(folio), folio);
-
if (args->is_readahead) {
opf |= REQ_RAHEAD;
gfp |= __GFP_NORETRY | __GFP_NOWARN;
--
2.45.2