From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Ross Zwisler <ross.zwisler@linux.intel.com>,
Jan Kara <jack@suse.cz>, Theodore Tso <tytso@mit.edu>
Subject: [PATCH 4.4 19/25] ext4: allow DAX writeback for hole punch
Date: Fri, 21 Oct 2016 11:16:10 +0200 [thread overview]
Message-ID: <20161021091414.217337186@linuxfoundation.org> (raw)
In-Reply-To: <20161021091413.053290730@linuxfoundation.org>
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ross Zwisler <ross.zwisler@linux.intel.com>
commit cca32b7eeb4ea24fa6596650e06279ad9130af98 upstream.
Currently when doing a DAX hole punch with ext4 we fail to do a writeback.
This is because the logic around filemap_write_and_wait_range() in
ext4_punch_hole() only looks for dirty page cache pages in the radix tree,
not for dirty DAX exceptional entries.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/inode.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3645,7 +3645,7 @@ int ext4_update_disksize_before_punch(st
}
/*
- * ext4_punch_hole: punches a hole in a file by releaseing the blocks
+ * ext4_punch_hole: punches a hole in a file by releasing the blocks
* associated with the given offset and length
*
* @inode: File inode
@@ -3674,7 +3674,7 @@ int ext4_punch_hole(struct inode *inode,
* Write out all dirty pages to avoid race conditions
* Then release them.
*/
- if (mapping->nrpages && mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
+ if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
ret = filemap_write_and_wait_range(mapping, offset,
offset + length - 1);
if (ret)
next prev parent reply other threads:[~2016-10-21 9:16 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20161021091628uscas1p21e03f35d4481162f8066d9056c8aeb3c@uscas1p2.samsung.com>
2016-10-21 9:15 ` [PATCH 4.4 00/25] 4.4.27-stable review Greg Kroah-Hartman
2016-10-21 9:15 ` [PATCH 4.4 01/25] serial: 8250_dw: Check the data->pclk when get apb_pclk Greg Kroah-Hartman
2016-10-21 9:15 ` [PATCH 4.4 02/25] btrfs: assign error values to the correct bio structs Greg Kroah-Hartman
2016-10-21 9:15 ` [PATCH 4.4 03/25] drivers: base: dma-mapping: page align the size when unmap_kernel_range Greg Kroah-Hartman
2016-10-21 9:15 ` [PATCH 4.4 04/25] fuse: listxattr: verify xattr list Greg Kroah-Hartman
2016-10-21 9:15 ` [PATCH 4.4 06/25] fuse: fix killing s[ug]id in setattr Greg Kroah-Hartman
2016-10-21 9:15 ` [PATCH 4.4 07/25] i40e: avoid NULL pointer dereference and recursive errors on early PCI error Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 09/25] ASoC: Intel: Atom: add a missing star in a memcpy call Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 10/25] reiserfs: Unlock superblock before calling reiserfs_quota_on_mount() Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 11/25] reiserfs: switch to generic_{get,set,remove}xattr() Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 12/25] async_pq_val: fix DMA memory leak Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 13/25] scsi: arcmsr: Buffer overflow in arcmsr_iop_message_xfer() Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 14/25] scsi: arcmsr: Simplify user_len checking Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 15/25] scsi: ibmvfc: Fix I/O hang when port is not mapped Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 16/25] ext4: enforce online defrag restriction for encrypted files Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 17/25] ext4: reinforce check of i_dtime when clearing high fields of uid and gid Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 18/25] ext4: fix memory leak in ext4_insert_range() Greg Kroah-Hartman
2016-10-21 9:16 ` Greg Kroah-Hartman [this message]
2016-10-21 9:16 ` [PATCH 4.4 20/25] ext4: release bh in make_indexed_dir Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 21/25] crypto: ghash-generic - move common definitions to a new header file Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 22/25] crypto: vmx - Fix memory corruption caused by p8_ghash Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 23/25] dlm: free workqueues after the connections Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 24/25] vfs: move permission checking into notify_change() for utimes(NULL) Greg Kroah-Hartman
2016-10-21 9:16 ` [PATCH 4.4 25/25] cfq: fix starvation of asynchronous writes Greg Kroah-Hartman
2016-10-21 15:44 ` [PATCH 4.4 00/25] 4.4.27-stable review Shuah Khan
2016-10-21 19:16 ` Guenter Roeck
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