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OpenZFS 6569 - large file delete can starve out write ops

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Authored by: Alek Pinchuk <alek@nexenta.com>
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>
Tested-by: kernelOfTruth <kerneloftruth@gmail.com>

OpenZFS-issue: https://www.illumos.org/issues/6569
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/1bf4b6f2
Closes #5706
This commit is contained in:
George Melikov
2017-02-01 01:44:03 +03:00
committed by Brian Behlendorf
parent a873815b95
commit 539d33c791
4 changed files with 94 additions and 5 deletions
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module/zfs/dsl_pool.c
+11
View File
@@ -23,6 +23,7 @@
* Copyright (c) 2011, 2015 by Delphix. All rights reserved.
* Copyright (c) 2013 Steven Hartland. All rights reserved.
* Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
* Copyright 2016 Nexenta Systems, Inc. All rights reserved.
*/
#include <sys/dsl_pool.h>
@@ -509,6 +510,16 @@ dsl_pool_sync(dsl_pool_t *dp, uint64_t txg)
*/
dsl_pool_undirty_space(dp, dp->dp_dirty_pertxg[txg & TXG_MASK], txg);
/*
* Update the long range free counter after
* we're done syncing user data
*/
mutex_enter(&dp->dp_lock);
ASSERT(spa_sync_pass(dp->dp_spa) == 1 ||
dp->dp_long_free_dirty_pertxg[txg & TXG_MASK] == 0);
dp->dp_long_free_dirty_pertxg[txg & TXG_MASK] = 0;
mutex_exit(&dp->dp_lock);
/*
* After the data blocks have been written (ensured by the zio_wait()
* above), update the user/group space accounting.