This is a note to let you know that I've just added the patch titled
btrfs: fix range_end calculation in extent_write_locked_range
to the 6.4-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:
btrfs-fix-range_end-calculation-in-extent_write_lock.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 67644565dd202bc90e9c91375fe5e3249a986f56
Author: Christoph Hellwig <hch@xxxxxx>
Date: Wed May 31 08:04:50 2023 +0200
btrfs: fix range_end calculation in extent_write_locked_range
[ Upstream commit 36614a3beba33a05ad78d4dcb9aa1d00e8a7d01f ]
The range_end field in struct writeback_control is inclusive, just like
the end parameter passed to extent_write_locked_range. Not doing this
could cause extra writeout, which is harmless but suboptimal.
Fixes: 771ed689d2cd ("Btrfs: Optimize compressed writeback and reads")
CC: stable@xxxxxxxxxxxxxxx # 5.9+
Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Stable-dep-of: 7027f87108ce ("btrfs: don't treat zoned writeback as being from an async helper thread")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 0c9538bb3c852..ac3aae55d55e5 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2468,7 +2468,7 @@ int extent_write_locked_range(struct inode *inode, u64 start, u64 end)
struct writeback_control wbc_writepages = {
.sync_mode = WB_SYNC_ALL,
.range_start = start,
- .range_end = end + 1,
+ .range_end = end,
.no_cgroup_owner = 1,
};
struct btrfs_bio_ctrl bio_ctrl = {
