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From: Zhaolei <zhaolei@cn.fujitsu.com>
To: <linux-btrfs@vger.kernel.org>
Cc: Zhao Lei <zhaolei@cn.fujitsu.com>
Subject: [PATCH 01/10] btrfs: Adjust commit-transaction condition to avoid NO_SPACE more
Date: Tue, 17 Feb 2015 17:39:25 +0800	[thread overview]
Message-ID: <1424165965-4066-1-git-send-email-zhaolei@cn.fujitsu.com> (raw)

From: Zhao Lei <zhaolei@cn.fujitsu.com>

If we have any chance to make a successful write, we should not give up.

This patch adjust commit-transaction condition from:
  pinned >= wanted
to
  left + pinned >= wanted

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
---
 fs/btrfs/extent-tree.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 414d533..4ffce64 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3751,7 +3751,8 @@ alloc:
 		 * don't bother committing the transaction.
 		 */
 		if (percpu_counter_compare(&data_sinfo->total_bytes_pinned,
-					   bytes) < 0)
+					   used + bytes -
+					   data_sinfo->total_bytes) < 0)
 			have_pinned_space = 0;
 		spin_unlock(&data_sinfo->lock);
 
-- 
1.8.5.1


             reply	other threads:[~2015-02-17  9:40 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-17  9:39 Zhaolei [this message]
2015-02-17  9:42 ` [PATCH 01/10] btrfs: Adjust commit-transaction condition to avoid NO_SPACE more Zhao Lei

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