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 folio_create_buffers but didn't get to it yet, so I decided to take a shot. No functional changes introduced. Changes since RFC[2]: - Renaming the helpers with folio_* - Calling folio_* helper version inside the *page* helper. [1] https://lore.kernel.org/all/ZBnGc4WbBOlnRUgd@xxxxxxxxxxxxxxxxxxxx/ [2]https://lore.kernel.org/lkml/20230414110821.21548-1-p.raghav@xxxxxxxxxxx/ Pankaj Raghav (4): fs/buffer: add folio_set_bh helper buffer: add folio_alloc_buffers() helper fs/buffer: add folio_create_empty_buffers helper fs/buffer: convert create_page_buffers to folio_create_buffers fs/buffer.c | 89 +++++++++++++++++++++++++------------ include/linux/buffer_head.h | 6 +++ 2 files changed, 66 insertions(+), 29 deletions(-) -- 2.34.1
