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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>, Jan Kara <jack@suse.cz>,
	Dan Williams <dan.j.williams@intel.com>,
	Dave Chinner <david@fromorbit.com>,
	Christoph Hellwig <hch@lst.de>,
	"Theodore Y. Ts'o" <tytso@mit.edu>,
	Jeff Moyer <jmoyer@redhat.com>,
	linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
Subject: [PATCH V8 01/11] fs/xfs: Remove unnecessary initialization of i_rwsem
Date: Tue, 14 Apr 2020 23:45:13 -0700	[thread overview]
Message-ID: <20200415064523.2244712-2-ira.weiny@intel.com> (raw)
In-Reply-To: <20200415064523.2244712-1-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:[~2020-04-15  6:48 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-15  6:45 [PATCH V8 00/11] Enable per-file/per-directory DAX operations V8 ira.weiny
2020-04-15  6:45 ` ira.weiny [this message]
2020-04-15 15:12   ` [PATCH V8 01/11] fs/xfs: Remove unnecessary initialization of i_rwsem Darrick J. Wong
2020-04-15  6:45 ` [PATCH V8 02/11] fs: Remove unneeded IS_DAX() check in io_is_direct() ira.weiny
2020-04-15  6:45 ` [PATCH V8 03/11] fs/stat: Define DAX statx attribute ira.weiny
2020-04-15  6:45 ` [PATCH V8 04/11] fs/xfs: Change XFS_MOUNT_DAX to XFS_MOUNT_DAX_ALWAYS ira.weiny
2020-04-15 15:11   ` Darrick J. Wong
2020-04-20  2:15   ` Dave Chinner
2020-04-20 17:50     ` Ira Weiny
2020-04-15  6:45 ` [PATCH V8 05/11] fs/xfs: Make DAX mount option a tri-state ira.weiny
2020-04-15 15:16   ` Darrick J. Wong
2020-04-16  4:15     ` Ira Weiny
2020-04-15  6:45 ` [PATCH V8 06/11] fs/xfs: Create function xfs_inode_enable_dax() ira.weiny
2020-04-15 15:17   ` Darrick J. Wong
2020-04-15  6:45 ` [PATCH V8 07/11] fs/xfs: Combine xfs_diflags_to_linux() and xfs_diflags_to_iflags() ira.weiny
2020-04-15  6:45 ` [PATCH V8 08/11] fs: Define I_DONTCACNE in VFS layer ira.weiny
2020-04-15  8:52   ` Jan Kara
2020-04-15 15:18     ` Darrick J. Wong
2020-04-16  4:28       ` Ira Weiny
2020-04-16  4:28     ` Ira Weiny
2020-04-15  6:45 ` [PATCH V8 09/11] fs: Introduce DCACHE_DONTCACHE ira.weiny
2020-04-15  9:01   ` Jan Kara
2020-04-16  4:55     ` Ira Weiny
2020-04-15  6:45 ` [PATCH V8 10/11] fs/xfs: Change xfs_ioctl_setattr_dax_invalidate() ira.weiny
2020-04-15 15:21   ` Darrick J. Wong
2020-04-16  5:00     ` Ira Weiny
2020-04-20  2:31   ` Dave Chinner
2020-04-20 18:36     ` Ira Weiny
2020-04-21  0:19       ` Dave Chinner
2020-04-15  6:45 ` [PATCH V8 11/11] Documentation/dax: Update Usage section ira.weiny
2020-04-15 15:29   ` Darrick J. Wong
2020-04-16  5:36     ` Ira Weiny

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