linux-kernel - [PATCH 0/4] convert create_page_buffers to folio_create

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Message-Id: <20230417123618.22094-1-p.raghav@samsung.com>
Date:   Mon, 17 Apr 2023 14:36:14 +0200
From:   Pankaj Raghav <p.raghav@...sung.com>
To:     viro@...iv.linux.org.uk, brauner@...nel.org, willy@...radead.org,
        akpm@...ux-foundation.org
Cc:     linux-fsdevel@...r.kernel.org, mcgrof@...nel.org,
        linux-kernel@...r.kernel.org, hare@...e.de, gost.dev@...sung.com,
        Pankaj Raghav <p.raghav@...sung.com>
Subject: [PATCH 0/4] convert create_page_buffers to folio_create_buffers

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@casper.infradead.org/
[2]https://lore.kernel.org/lkml/20230414110821.21548-1-p.raghav@samsung.com/

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