* Patch "ext4: allow DAX writeback for hole punch" has been added to the 4.8-stable tree
@ 2016-10-20 15:54 gregkh
0 siblings, 0 replies; only message in thread
From: gregkh @ 2016-10-20 15:54 UTC (permalink / raw)
To: ross.zwisler, gregkh, jack, tytso; +Cc: stable, stable-commits
This is a note to let you know that I've just added the patch titled
ext4: allow DAX writeback for hole punch
to the 4.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ext4-allow-dax-writeback-for-hole-punch.patch
and it can be found in the queue-4.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From cca32b7eeb4ea24fa6596650e06279ad9130af98 Mon Sep 17 00:00:00 2001
From: Ross Zwisler <ross.zwisler@linux.intel.com>
Date: Thu, 22 Sep 2016 11:49:38 -0400
Subject: ext4: allow DAX writeback for hole punch
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
@@ -3892,7 +3892,7 @@ 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
@@ -3921,7 +3921,7 @@ 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)
Patches currently in stable-queue which might be from ross.zwisler@linux.intel.com are
queue-4.8/ext4-allow-dax-writeback-for-hole-punch.patch
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2016-10-20 15:54 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-10-20 15:54 Patch "ext4: allow DAX writeback for hole punch" has been added to the 4.8-stable tree gregkh
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.