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Date: Tue, 13 Apr 2021 14:05:12 +0100 From: Christoph Hellwig <hch@...radead.org> To: Jan Kara <jack@...e.cz> Cc: linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org, Ted Tso <tytso@....edu>, Christoph Hellwig <hch@...radead.org>, Amir Goldstein <amir73il@...il.com>, Dave Chinner <david@...morbit.com> Subject: Re: [PATCH 5/7] xfs: Convert to use i_mapping_sem On Tue, Apr 13, 2021 at 01:28:49PM +0200, Jan Kara wrote: > Use i_mapping_sem instead of XFS internal i_mmap_lock. The intended > purpose of i_mapping_sem is exactly the same. Might be worth mentioning here that the locking in __xfs_filemap_fault changes because filemap_fault already takes i_mapping_sem? > * mmap_lock (MM) > * sb_start_pagefault(vfs, freeze) > - * i_mmaplock (XFS - truncate serialisation) > + * i_mapping_sem (XFS - truncate serialisation) This is sort of VFS now, isn't it? Otherwise looks good: Reviewed-by: Christoph Hellwig <hch@....de>
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