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From: ira.weiny@intel.com
To: linux-kernel@vger.kernel.org,
	"Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Ira Weiny <ira.weiny@intel.com>,
	Dave Chinner <dchinner@redhat.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>,
	Jeff Moyer <jmoyer@redhat.com>,
	linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
Subject: [PATCH V7 1/9] fs/xfs: Remove unnecessary initialization of i_rwsem
Date: Sun, 12 Apr 2020 22:40:38 -0700	[thread overview]
Message-ID: <20200413054046.1560106-2-ira.weiny@intel.com> (raw)
In-Reply-To: <20200413054046.1560106-1-ira.weiny@intel.com>

From: Ira Weiny <ira.weiny@intel.com>

An earlier call of xfs_reinit_inode() from xfs_iget_cache_hit() already
handles initialization of i_rwsem.

Doing so again is unneeded.

Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>

---
Changes from V4:
	Update commit message to make it clear the xfs_iget_cache_hit()
	is actually doing the initialization via xfs_reinit_inode()

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 {
-- 
2.25.1


  reply	other threads:[~2020-04-13  5:41 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-13  5:40 [PATCH V7 0/9] Enable per-file/per-directory DAX operations V7 ira.weiny
2020-04-13  5:40 ` ira.weiny [this message]
2020-04-13 15:41   ` [PATCH V7 1/9] fs/xfs: Remove unnecessary initialization of i_rwsem Darrick J. Wong
2020-04-13  5:40 ` [PATCH V7 2/9] fs: Remove unneeded IS_DAX() check in io_is_direct() ira.weiny
2020-04-14  6:22   ` Christoph Hellwig
2020-04-13  5:40 ` [PATCH V7 3/9] fs/stat: Define DAX statx attribute ira.weiny
2020-04-14  6:23   ` Christoph Hellwig
2020-04-14 20:39     ` Ira Weiny
2020-04-13  5:40 ` [PATCH V7 4/9] fs/xfs: Make DAX mount option a tri-state ira.weiny
2020-04-13 15:46   ` Darrick J. Wong
2020-04-13 19:28     ` Ira Weiny
2020-04-14  6:24       ` Christoph Hellwig
2020-04-14  6:25   ` Christoph Hellwig
2020-04-14 20:34     ` Ira Weiny
2020-04-13  5:40 ` [PATCH V7 5/9] fs/xfs: Create function xfs_inode_enable_dax() ira.weiny
2020-04-13 15:52   ` Darrick J. Wong
2020-04-13 19:39     ` Ira Weiny
2020-04-14  6:27   ` Christoph Hellwig
2020-04-14 20:43     ` Ira Weiny
2020-04-13  5:40 ` [PATCH V7 6/9] fs/xfs: Combine xfs_diflags_to_linux() and xfs_diflags_to_iflags() ira.weiny
2020-04-13 16:01   ` Darrick J. Wong
2020-04-14  4:07     ` Ira Weiny
2020-04-13  5:40 ` [PATCH V7 7/9] fs: Define I_DONTCACNE in VFS layer ira.weiny
2020-04-13 16:09   ` Darrick J. Wong
2020-04-13 16:13     ` Darrick J. Wong
2020-04-13 19:44     ` Ira Weiny
2020-04-14 15:26   ` Jan Kara
2020-04-14 15:45     ` Ira Weiny
2020-04-14 15:59       ` Jan Kara
2020-04-13  5:40 ` [PATCH V7 8/9] fs/xfs: Change xfs_ioctl_setattr_dax_invalidate() ira.weiny
2020-04-13 16:12   ` Darrick J. Wong
2020-04-13 19:46     ` Ira Weiny
2020-04-13  5:40 ` [PATCH V7 9/9] Documentation/dax: Update Usage section ira.weiny
2020-04-13 16:19   ` Darrick J. Wong
2020-04-14  4:38     ` Ira Weiny
2020-04-14  5:12       ` Dan Williams
2020-04-14 19:48         ` Ira Weiny
2020-04-15  8:23           ` Jan Kara
2020-04-14  5:21   ` Dan Williams
2020-04-14 16:15     ` Darrick J. Wong
2020-04-14 19:04       ` Dan Williams
2020-04-14 19:57         ` Darrick J. Wong
2020-04-14 20:00           ` Ira Weiny
2020-04-14 20:18             ` Darrick J. Wong
2020-04-14 20:54               ` Ira Weiny
2020-04-14 21:02                 ` Darrick J. Wong
2020-04-14 19:58         ` Ira Weiny

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