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3decb8564e
Patch series "Finish the create_empty_buffers() transition", v2. Pankaj recently added folio_create_empty_buffers() as the folio equivalent to create_empty_buffers(). This patch set finishes the conversion by first converting all remaining filesystems to call folio_create_empty_buffers(), then renaming it back to create_empty_buffers(). I took the opportunity to make a few simplifications like making folio_create_empty_buffers() return the head buffer and extracting get_nth_bh() from nilfs2. A few of the patches in this series aren't directly related to create_empty_buffers(), but I saw them while I was working on this and thought they'd be easy enough to add to this series. Compile-tested only, other than ext4. This patch (of 26): Almost all callers want to know the first BH that was allocated for this folio. We already have that handy, so return it. Link: https://lkml.kernel.org/r/20231016201114.1928083-1-willy@infradead.org Link: https://lkml.kernel.org/r/20231016201114.1928083-3-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Pankaj Raghav <p.raghav@samsung.com> Cc: Andreas Gruenbacher <agruenba@redhat.com> Cc: Ryusuke Konishi <konishi.ryusuke@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>