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From: Josef Bacik <jbacik@fb.com>
To: <linux-btrfs@vger.kernel.org>
Subject: [PATCH 12/14] Btrfs: fix release reserved extents trace points
Date: Fri, 25 Mar 2016 13:25:58 -0400	[thread overview]
Message-ID: <1458926760-17563-13-git-send-email-jbacik@fb.com> (raw)
In-Reply-To: <1458926760-17563-1-git-send-email-jbacik@fb.com>

We were doing trace_btrfs_release_reserved_extent() in pin_down_extent which
isn't quite right because we will go through and free that extent later when we
unpin, so it messes up apps that are accounting for the reservation space.  We
were also unconditionally doing it in __btrfs_free_reserved_extent(), when we
only actually free the reservation instead of pinning the extent.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
---
 fs/btrfs/extent-tree.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 0ecceea..273e18d 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -6253,8 +6253,6 @@ static int pin_down_extent(struct btrfs_root *root,
 				      cache->space_info->flags, num_bytes, 1);
 	set_extent_dirty(root->fs_info->pinned_extents, bytenr,
 			 bytenr + num_bytes - 1, GFP_NOFS | __GFP_NOFAIL);
-	if (reserved)
-		trace_btrfs_reserved_extent_free(root, bytenr, num_bytes);
 	return 0;
 }
 
@@ -7877,12 +7875,10 @@ static int __btrfs_free_reserved_extent(struct btrfs_root *root,
 			ret = btrfs_discard_extent(root, start, len, NULL);
 		btrfs_add_free_space(cache, start, len);
 		btrfs_update_reserved_bytes(cache, len, RESERVE_FREE, delalloc);
+		trace_btrfs_reserved_extent_free(root, start, len);
 	}
 
 	btrfs_put_block_group(cache);
-
-	trace_btrfs_reserved_extent_free(root, start, len);
-
 	return ret;
 }
 
-- 
2.5.0


  parent reply	other threads:[~2016-03-25 17:26 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-25 17:25 [PATCH 00/14] Enospc rework Josef Bacik
2016-03-25 17:25 ` [PATCH 01/14] Btrfs: add bytes_readonly to the spaceinfo at once Josef Bacik
2016-03-25 17:25 ` [PATCH 02/14] Btrfs: fix callers of btrfs_block_rsv_migrate Josef Bacik
2016-03-25 17:25 ` [PATCH 03/14] Btrfs: always reserve metadata for delalloc extents Josef Bacik
2016-03-25 18:04   ` Liu Bo
2016-03-25 17:25 ` [PATCH 04/14] Btrfs: change delayed reservation fallback behavior Josef Bacik
2016-03-25 17:25 ` [PATCH 05/14] Btrfs: warn_on for unaccounted spaces Josef Bacik
2016-06-27  4:47   ` Qu Wenruo
2016-06-27 13:03     ` Chris Mason
2016-06-28  0:16       ` Qu Wenruo
2016-03-25 17:25 ` [PATCH 06/14] Btrfs: add tracepoint for adding block groups Josef Bacik
2016-03-25 17:25 ` [PATCH 07/14] Btrfs: introduce ticketed enospc infrastructure Josef Bacik
2016-05-09 21:29   ` Liu Bo
2016-05-17 17:30   ` [PATCH V2] " Josef Bacik
2016-05-18 11:24     ` Austin S. Hemmelgarn
2016-05-19 12:47       ` Austin S. Hemmelgarn
2016-05-18 22:46     ` David Sterba
2016-03-25 17:25 ` [PATCH 08/14] Btrfs: trace pinned extents Josef Bacik
2016-03-25 17:25 ` [PATCH 09/14] Btrfs: fix delalloc reservation amount tracepoint Josef Bacik
2016-03-25 17:25 ` [PATCH 10/14] Btrfs: add tracepoints for flush events Josef Bacik
2016-03-25 17:25 ` [PATCH 11/14] Btrfs: add fsid to some tracepoints Josef Bacik
2016-03-25 17:25 ` Josef Bacik [this message]
2016-05-09 21:33   ` [PATCH 12/14] Btrfs: fix release reserved extents trace points Liu Bo
2016-03-25 17:25 ` [PATCH 13/14] Btrfs: don't bother kicking async if there's nothing to reclaim Josef Bacik
2016-03-25 17:26 ` [PATCH 14/14] Btrfs: don't do nocow check unless we have to Josef Bacik
2016-03-25 17:50   ` Liu Bo

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