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buffer: Remove reference to unmap_buffer()

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unmap_buffer() was removed 25 years ago in v2.4.10.0.1.  We don't
need to mention it in a comment any more.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://patch.msgid.link/20260828205429.3678204-2-willy@infradead.org
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
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Matthew Wilcox (Oracle) 2026-08-28 21:54:21 +01:00 committed by Christian Brauner
parent 00db7c70bf
commit c7ea7fb609
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1 changed files with 1 additions and 3 deletions
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fs/buffer.c
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@ -1615,9 +1615,7 @@ EXPORT_SYMBOL(create_empty_buffers);
* moment when something will explicitly mark the buffer dirty (hopefully that
* will not happen until we will free that block ;-) We don't even need to mark
* it not-uptodate - nobody can expect anything from a newly allocated buffer
* anyway. We used to use unmap_buffer() for such invalidation, but that was
* wrong. We definitely don't want to mark the alias unmapped, for example - it
* would confuse anyone who might pick it with bread() afterwards...
* anyway.
*
* Also.. Note that bforget() doesn't lock the buffer. So there can be
* writeout I/O going on against recently-freed buffers. We don't wait on that