One of the first kernel panic we hit when we try to increase the block size > 4k is inside create_page_buffers()[1]. Even though buffer.c function do not support large folios (folios > PAGE_SIZE) at the moment, these changes are required when we want to remove that constraint. Willy had already mentioned that he wanted to convert create_page_buffers to create_folio_buffers but didn't get to it yet, so I decided to take a shot. No functional changes introduced. OI: - I don't like the fact that I had to introduce folio_create_empty_buffers() as create_empty_buffers() is used in many parts of the kernel. Should I do a big bang change as a part of this series where we convert create_empty_buffers to take a folio and change the callers to pass a folio instead of a page? - I split the series into 4 commits for clarity. I could squash them into one patch if needed. [1] https://lore.kernel.org/all/ZBnGc4WbBOlnRUgd@xxxxxxxxxxxxxxxxxxxx/ Pankaj Raghav (4): fs/buffer: add set_bh_folio helper buffer: add alloc_folio_buffers() helper fs/buffer: add folio_create_empty_buffers helper fs/buffer: convert create_page_buffers to create_folio_buffers fs/buffer.c | 131 +++++++++++++++++++++++++++++++++--- include/linux/buffer_head.h | 4 ++ 2 files changed, 125 insertions(+), 10 deletions(-) -- 2.34.1
