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List:       linux-btrfs
Subject:    [PATCH 4/9] btrfs: check reclaim_size in need_preemptive_reclaim
From:       Josef Bacik <josef () toxicpanda ! com>
Date:       2020-09-30 20:01:04
Message-ID: 855a8376fa0d8e63e066ac323a985fe7bc1e562f.1601495426.git.josef () toxicpanda ! com
[Download RAW message or body]

If we're flushing space for tickets then we have
space_info->reclaim_size set and we do not need to do background
reclaim.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
---
 fs/btrfs/space-info.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c
index 98207ea57a3d..518749093bc5 100644
--- a/fs/btrfs/space-info.c
+++ b/fs/btrfs/space-info.c
@@ -805,6 +805,13 @@ static inline int need_preemptive_reclaim(struct btrfs_fs_info *fs_info,
 	if ((space_info->bytes_used + space_info->bytes_reserved) >= thresh)
 		return 0;
 
+	/*
+	 * We have tickets queued, bail so we don't compete with the async
+	 * flushers.
+	 */
+	if (space_info->reclaim_size)
+		return 0;
+
 	if (!btrfs_calc_reclaim_metadata_size(fs_info, space_info))
 		return 0;
 
-- 
2.26.2

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