From: Ira Weiny <ira.weiny@intel.com>
To: linux-kernel@vger.kernel.org
Cc: Alexander Viro <viro@zeniv.linux.org.uk>,
"Darrick J. Wong" <darrick.wong@oracle.com>,
Dan Williams <dan.j.williams@intel.com>,
Dave Chinner <david@fromorbit.com>,
Christoph Hellwig <hch@lst.de>,
"Theodore Y. Ts'o" <tytso@mit.edu>, Jan Kara <jack@suse.cz>,
linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH V5 01/12] fs/xfs: Remove unnecessary initialization of i_rwsem
Date: Thu, 27 Feb 2020 09:25:49 -0800 [thread overview]
Message-ID: <20200227172549.GA6468@iweiny-DESK2.sc.intel.com> (raw)
In-Reply-To: <20200227052442.22524-2-ira.weiny@intel.com>
On Wed, Feb 26, 2020 at 09:24:31PM -0800, 'Ira Weiny' wrote:
> From: Ira Weiny <ira.weiny@intel.com>
>
> xfs_reinit_inode() -> inode_init_always() already handles calling
> init_rwsem(i_rwsem). Doing so again is unneeded.
>
> Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Ok... I'm going to blame exchange...
Dan just pointed out that I mist this response from Dave...
Saying this patch was wrong.
https://lore.kernel.org/lkml/20200221012625.GT10776@dread.disaster.area/
Sorry, I need to read that email and look at it.
Ira
>
> ---
> New for V4:
>
> NOTE: This was found while ensuring the new i_aops_sem was properly
> handled. It seems like this is a layering violation so I think it is
> worth cleaning up so as to not confuse others.
> ---
> fs/xfs/xfs_icache.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
> index 8dc2e5414276..836a1f09be03 100644
> --- a/fs/xfs/xfs_icache.c
> +++ b/fs/xfs/xfs_icache.c
> @@ -419,6 +419,7 @@ xfs_iget_cache_hit(
> spin_unlock(&ip->i_flags_lock);
> rcu_read_unlock();
>
> + ASSERT(!rwsem_is_locked(&inode->i_rwsem));
> error = xfs_reinit_inode(mp, inode);
> if (error) {
> bool wake;
> @@ -452,9 +453,6 @@ xfs_iget_cache_hit(
> ip->i_sick = 0;
> ip->i_checked = 0;
>
> - ASSERT(!rwsem_is_locked(&inode->i_rwsem));
> - init_rwsem(&inode->i_rwsem);
> -
> spin_unlock(&ip->i_flags_lock);
> spin_unlock(&pag->pag_ici_lock);
> } else {
> --
> 2.21.0
>
next prev parent reply other threads:[~2020-02-27 17:25 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-27 5:24 [PATCH V5 00/12] Enable per-file/per-directory DAX operations V5 ira.weiny
2020-02-27 5:24 ` [PATCH V5 01/12] fs/xfs: Remove unnecessary initialization of i_rwsem ira.weiny
2020-02-27 17:25 ` Ira Weiny [this message]
2020-02-27 5:24 ` [PATCH V5 02/12] fs: Remove unneeded IS_DAX() check ira.weiny
2020-02-27 5:24 ` [PATCH V5 03/12] fs/stat: Define DAX statx attribute ira.weiny
2020-02-27 5:24 ` [PATCH V5 04/12] fs/xfs: Isolate the physical DAX flag from enabled ira.weiny
2020-02-27 5:24 ` [PATCH V5 05/12] fs/xfs: Create function xfs_inode_enable_dax() ira.weiny
2020-03-01 22:37 ` Dave Chinner
2020-02-27 5:24 ` [PATCH V5 06/12] fs: Add locking for a dynamic address space operations state ira.weiny
2020-03-02 1:26 ` Dave Chinner
2020-03-02 1:36 ` Dave Chinner
2020-02-27 5:24 ` [PATCH V5 07/12] fs: Prevent DAX state change if file is mmap'ed ira.weiny
2020-02-27 5:24 ` [PATCH V5 08/12] fs/xfs: Hold off aops users while changing DAX state ira.weiny
2020-02-27 5:24 ` [PATCH V5 09/12] fs/xfs: Clean up locking in dax invalidate ira.weiny
2020-02-27 5:24 ` [PATCH V5 10/12] fs/xfs: Allow toggle of effective DAX flag ira.weiny
2020-02-27 5:24 ` [PATCH V5 11/12] fs/xfs: Remove xfs_diflags_to_linux() ira.weiny
2020-02-27 5:24 ` [PATCH V5 12/12] Documentation/dax: Update Usage section ira.weiny
2020-03-05 15:51 ` [PATCH V5 00/12] Enable per-file/per-directory DAX operations V5 Christoph Hellwig
2020-03-09 17:04 ` Ira Weiny
2020-03-11 3:36 ` Darrick J. Wong
2020-03-11 6:29 ` Christoph Hellwig
2020-03-11 17:07 ` Dan Williams
2020-03-16 9:52 ` Jan Kara
2020-03-16 9:55 ` Christoph Hellwig
2020-04-01 4:00 ` Darrick J. Wong
2020-04-01 10:25 ` Jan Kara
2020-04-02 8:53 ` Christoph Hellwig
2020-04-02 20:55 ` Ira Weiny
2020-04-03 7:27 ` Christoph Hellwig
2020-04-03 15:48 ` Ira Weiny
2020-04-03 17:03 ` Jan Kara
2020-04-03 18:18 ` Ira Weiny
2020-04-03 18:21 ` Ira Weiny
2020-04-03 18:37 ` Darrick J. Wong
2020-04-05 6:19 ` Ira Weiny
2020-04-06 10:00 ` Jan Kara
2020-04-03 18:29 ` Darrick J. Wong
2020-04-03 16:05 ` Darrick J. Wong
2020-04-03 4:39 ` Ira Weiny
2020-03-11 6:39 ` Dave Chinner
2020-03-11 6:44 ` Christoph Hellwig
2020-03-11 17:07 ` Dan Williams
2020-03-12 0:49 ` Dave Chinner
2020-03-12 3:00 ` Darrick J. Wong
2020-03-12 7:27 ` Christoph Hellwig
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