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Date:   Sun, 16 Feb 2020 18:37:31 -0800 (PST)
From:   David Miller <>
Subject: Re: [PATCH 1/1] net/rds: Track user mapped pages through special

From: John Hubbard <>
Date: Tue, 11 Feb 2020 19:03:55 -0800

> From: Leon Romanovsky <>
> Convert net/rds to use the newly introduces pin_user_pages() API,
> which properly sets FOLL_PIN. Setting FOLL_PIN is now required for
> code that requires tracking of pinned pages.
> Note that this effectively changes the code's behavior: it now
> ultimately calls set_page_dirty_lock(), instead of set_page_dirty().
> This is probably more accurate.
> As Christoph Hellwig put it, "set_page_dirty() is only safe if we are
> dealing with a file backed page where we have reference on the inode it
> hangs off." [1]
> [1]
> Cc: Hans Westgaard Ry <>
> Cc: Santosh Shilimkar <>
> Signed-off-by: Leon Romanovsky <>
> Signed-off-by: John Hubbard <>

Applied, thank you.

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