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From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: david@fromorbit.com, darrick.wong@oracle.com
Cc: sandeen@redhat.com, linux-nfs@vger.kernel.org,
	linux-cifs@vger.kernel.org, linux-unionfs@vger.kernel.org,
	linux-xfs@vger.kernel.org, linux-mm@kvack.org,
	linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	ocfs2-devel@oss.oracle.com
Subject: [PATCH 19/28] ocfs2: truncate page cache for clone destination file before remapping
Date: Sun, 21 Oct 2018 09:17:16 -0700	[thread overview]
Message-ID: <154013863631.29026.17663976179167255577.stgit@magnolia> (raw)
In-Reply-To: <154013850285.29026.16168387526580596209.stgit@magnolia>

From: Darrick J. Wong <darrick.wong@oracle.com>

When cloning blocks into another file, truncate the page cache before we
start remapping blocks so that concurrent reads wait for us to finish.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/ocfs2/refcounttree.c |   10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)


diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 46bbd315c39f..2a5c96bc9677 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -4861,14 +4861,12 @@ int ocfs2_reflink_remap_range(struct file *file_in,
 		down_write_nested(&OCFS2_I(inode_out)->ip_alloc_sem,
 				  SINGLE_DEPTH_NESTING);
 
-	ret = ocfs2_reflink_remap_blocks(inode_in, in_bh, pos_in, inode_out,
-					 out_bh, pos_out, len);
-
 	/* Zap any page cache for the destination file's range. */
-	if (!ret)
-		truncate_inode_pages_range(&inode_out->i_data, pos_out,
-					   PAGE_ALIGN(pos_out + len) - 1);
+	truncate_inode_pages_range(&inode_out->i_data, pos_out,
+				   PAGE_ALIGN(pos_out + len) - 1);
 
+	ret = ocfs2_reflink_remap_blocks(inode_in, in_bh, pos_in, inode_out,
+					 out_bh, pos_out, len);
 	up_write(&OCFS2_I(inode_in)->ip_alloc_sem);
 	if (!same_inode)
 		up_write(&OCFS2_I(inode_out)->ip_alloc_sem);

WARNING: multiple messages have this Message-ID
From: Darrick J. Wong <darrick.wong@oracle.com>
To: david@fromorbit.com, darrick.wong@oracle.com
Cc: sandeen@redhat.com, linux-nfs@vger.kernel.org,
	linux-cifs@vger.kernel.org, linux-unionfs@vger.kernel.org,
	linux-xfs@vger.kernel.org, linux-mm@kvack.org,
	linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	ocfs2-devel@oss.oracle.com
Subject: [Ocfs2-devel] [PATCH 19/28] ocfs2: truncate page cache for clone destination file before remapping
Date: Sun, 21 Oct 2018 09:17:16 -0700	[thread overview]
Message-ID: <154013863631.29026.17663976179167255577.stgit@magnolia> (raw)
In-Reply-To: <154013850285.29026.16168387526580596209.stgit@magnolia>

From: Darrick J. Wong <darrick.wong@oracle.com>

When cloning blocks into another file, truncate the page cache before we
start remapping blocks so that concurrent reads wait for us to finish.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/ocfs2/refcounttree.c |   10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)


diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 46bbd315c39f..2a5c96bc9677 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -4861,14 +4861,12 @@ int ocfs2_reflink_remap_range(struct file *file_in,
 		down_write_nested(&OCFS2_I(inode_out)->ip_alloc_sem,
 				  SINGLE_DEPTH_NESTING);
 
-	ret = ocfs2_reflink_remap_blocks(inode_in, in_bh, pos_in, inode_out,
-					 out_bh, pos_out, len);
-
 	/* Zap any page cache for the destination file's range. */
-	if (!ret)
-		truncate_inode_pages_range(&inode_out->i_data, pos_out,
-					   PAGE_ALIGN(pos_out + len) - 1);
+	truncate_inode_pages_range(&inode_out->i_data, pos_out,
+				   PAGE_ALIGN(pos_out + len) - 1);
 
+	ret = ocfs2_reflink_remap_blocks(inode_in, in_bh, pos_in, inode_out,
+					 out_bh, pos_out, len);
 	up_write(&OCFS2_I(inode_in)->ip_alloc_sem);
 	if (!same_inode)
 		up_write(&OCFS2_I(inode_out)->ip_alloc_sem);

  parent reply	other threads:[~2018-10-21 16:17 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-21 16:15 [PATCH v6 00/28] fs: fixes for serious clone/dedupe problems Darrick J. Wong
2018-10-21 16:15 ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 01/28] vfs: vfs_clone_file_prep_inodes should return EINVAL for a clone from beyond EOF Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 02/28] vfs: check file ranges before cloning files Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 03/28] vfs: exit early from zero length remap operations Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 04/28] vfs: strengthen checking of file range inputs to generic_remap_checks Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 05/28] vfs: avoid problematic remapping requests into partial EOF block Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15   ` Darrick J. Wong
2018-10-21 16:15 ` [PATCH 06/28] vfs: skip zero-length dedupe requests Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 07/28] vfs: rename vfs_clone_file_prep to be more descriptive Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 08/28] vfs: rename clone_verify_area to remap_verify_area Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 09/28] vfs: combine the clone and dedupe into a single remap_file_range Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 10/28] vfs: pass remap flags to generic_remap_file_range_prep Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 11/28] vfs: pass remap flags to generic_remap_checks Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16   ` Darrick J. Wong
2018-10-21 16:16 ` [PATCH 12/28] vfs: remap helper should update destination inode metadata Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 13/28] vfs: make remap_file_range functions take and return bytes completed Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 14/28] vfs: plumb remap flags through the vfs clone functions Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 15/28] vfs: plumb remap flags through the vfs dedupe functions Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 16/28] vfs: enable remap callers that can handle short operations Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17 ` [PATCH 17/28] vfs: hide file range comparison function Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17   ` Darrick J. Wong
2018-10-21 16:17 ` [PATCH 18/28] vfs: clean up generic_remap_file_range_prep return value Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17   ` Darrick J. Wong
2018-10-21 16:17 ` Darrick J. Wong [this message]
2018-10-21 16:17   ` [Ocfs2-devel] [PATCH 19/28] ocfs2: truncate page cache for clone destination file before remapping Darrick J. Wong
2018-10-21 16:17 ` [PATCH 20/28] ocfs2: fix pagecache truncation prior to reflink Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17 ` [PATCH 21/28] ocfs2: support partial clone range and dedupe range Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17 ` [PATCH 22/28] ocfs2: remove ocfs2_reflink_remap_range Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17 ` [PATCH 23/28] xfs: fix pagecache truncation prior to reflink Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17   ` Darrick J. Wong
2018-10-21 16:17 ` [PATCH 24/28] xfs: clean up xfs_reflink_remap_blocks call site Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-22  2:11   ` Dave Chinner
2018-10-22  2:11     ` [Ocfs2-devel] " Dave Chinner
2018-10-21 16:17 ` [PATCH 25/28] xfs: support returning partial reflink results Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17   ` Darrick J. Wong
2018-10-22  2:14   ` Dave Chinner
2018-10-22  2:14     ` [Ocfs2-devel] " Dave Chinner
2018-10-21 16:18 ` [PATCH 26/28] xfs: remove redundant remap partial EOF block checks Darrick J. Wong
2018-10-21 16:18   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:18 ` [PATCH 27/28] xfs: remove xfs_reflink_remap_range Darrick J. Wong
2018-10-21 16:18   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-22  2:17   ` Dave Chinner
2018-10-22  2:17     ` [Ocfs2-devel] " Dave Chinner
2018-10-21 16:18 ` [PATCH 28/28] xfs: remove [cm]time update from reflink calls Darrick J. Wong
2018-10-21 16:18   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-22  2:18   ` Dave Chinner
2018-10-22  2:18     ` [Ocfs2-devel] " Dave Chinner
2018-10-22  2:21 ` [PATCH v6 00/28] fs: fixes for serious clone/dedupe problems Dave Chinner
2018-10-22  2:21   ` [Ocfs2-devel] " Dave Chinner
2018-10-22  4:37   ` Dave Chinner
2018-10-22  4:37     ` [Ocfs2-devel] " Dave Chinner
2018-10-22  4:52     ` Al Viro
2018-10-22  4:52       ` [Ocfs2-devel] " Al Viro
2018-10-22  5:08       ` Dave Chinner
2018-10-22  5:08         ` [Ocfs2-devel] " Dave Chinner
2018-10-22  5:42         ` Amir Goldstein
2018-10-22  6:55           ` Dave Chinner
2018-10-22  6:55             ` [Ocfs2-devel] " Dave Chinner

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