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From: James Simmons <jsimmons@infradead.org>
To: lustre-devel@lists.lustre.org
Subject: [lustre-devel] [PATCH 31/42] lustre: clio: don't call aio_complete() in lustre upon errors
Date: Mon,  5 Oct 2020 20:06:10 -0400	[thread overview]
Message-ID: <1601942781-24950-32-git-send-email-jsimmons@infradead.org> (raw)
In-Reply-To: <1601942781-24950-1-git-send-email-jsimmons@infradead.org>

From: Wang Shilong <wshilong@ddn.com>

For older kernels VFS will call aio_complete() if ret is
not -EIOCBQUEUED, this could happen when we don't pass user
buffer as page alignment or some other errors happen in Lustre.

So in Lustre, we need be careful to handle this case to avoid double
aio_complete() called. Newer kernels don't have this issue but
apply this change to keep in sync with OpenSFS tree.

Fixes: fde7ac1 ("lustre: clio: AIO support for direct IO")
WC-bug-id: https://jira.whamcloud.com/browse/LU-13900
Lustre-commit: 2fb8444b5a6369 ("LU-13900 clio: don't call aio_complete() in lustre upon errors")
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Reviewed-on: https://review.whamcloud.com/39636
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: Yingjin Qian <qian@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
 fs/lustre/include/cl_object.h | 1 +
 fs/lustre/llite/file.c        | 7 +++++++
 fs/lustre/obdclass/cl_io.c    | 3 ++-
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/fs/lustre/include/cl_object.h b/fs/lustre/include/cl_object.h
index e849f23..56200d2 100644
--- a/fs/lustre/include/cl_object.h
+++ b/fs/lustre/include/cl_object.h
@@ -2572,6 +2572,7 @@ struct cl_dio_aio {
 	struct cl_page_list	cda_pages;
 	struct kiocb		*cda_iocb;
 	ssize_t			cda_bytes;
+	unsigned int		cda_no_aio_complete:1;
 };
 
 /** @} cl_sync_io */
diff --git a/fs/lustre/llite/file.c b/fs/lustre/llite/file.c
index babd24d..1d2ab11 100644
--- a/fs/lustre/llite/file.c
+++ b/fs/lustre/llite/file.c
@@ -1669,6 +1669,13 @@ static void ll_heat_add(struct inode *inode, enum cl_io_type iot,
 	}
 
 	if (io->ci_aio) {
+		/*
+		 * VFS will call aio_complete() if no -EIOCBQUEUED
+		 * is returned for AIO, so we can not call aio_complete()
+		 * in our end_io().
+		 */
+		if (rc != -EIOCBQUEUED)
+			io->ci_aio->cda_no_aio_complete = 1;
 		/**
 		 * Drop one extra reference so that end_io() could be
 		 * called for this IO context, we could call it after
diff --git a/fs/lustre/obdclass/cl_io.c b/fs/lustre/obdclass/cl_io.c
index 1564d9f..aa3cb17 100644
--- a/fs/lustre/obdclass/cl_io.c
+++ b/fs/lustre/obdclass/cl_io.c
@@ -1087,7 +1087,7 @@ static void cl_aio_end(const struct lu_env *env, struct cl_sync_io *anchor)
 		cl_page_put(env, page);
 	}
 
-	if (!is_sync_kiocb(aio->cda_iocb) &&
+	if (!is_sync_kiocb(aio->cda_iocb) && !aio->cda_no_aio_complete &&
 	    aio->cda_iocb->ki_complete)
 		aio->cda_iocb->ki_complete(aio->cda_iocb,
 					   ret ?: aio->cda_bytes, 0);
@@ -1108,6 +1108,7 @@ struct cl_dio_aio *cl_aio_alloc(struct kiocb *iocb)
 				       cl_aio_end);
 		cl_page_list_init(&aio->cda_pages);
 		aio->cda_iocb = iocb;
+		aio->cda_no_aio_complete = 0;
 	}
 	return aio;
 }
-- 
1.8.3.1

  parent reply	other threads:[~2020-10-06  0:06 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-06  0:05 [lustre-devel] [PATCH 00/42] lustre: OpenSFS backport for Oct 4 2020 James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 01/42] lustre: ptlrpc: don't require CONFIG_CRYPTO_CRC32 James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 02/42] lustre: dom: lock cancel to drop pages James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 03/42] lustre: sec: use memchr_inv() to check if page is zero James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 04/42] lustre: mdc: fix lovea for replay James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 05/42] lustre: llite: add test to check client deadlock selinux James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 06/42] lnet: use init_wait(), not init_waitqueue_entry() James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 07/42] lustre: lov: make various lov_object.c function static James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 08/42] lustre: llite: return -ENODATA if no default layout James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 09/42] lnet: libcfs: don't save journal_info in dumplog thread James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 10/42] lustre: ldlm: lru code cleanup James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 11/42] lustre: ldlm: cancel LRU improvement James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 12/42] lnet: Do not set preferred NI for MR peer James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 13/42] lustre: ptlrpc: prefer crc32_le() over CryptoAPI James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 14/42] lnet: call event handlers without res_lock James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 15/42] lnet: Conditionally attach rspt in LNetPut & LNetGet James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 16/42] lustre: llite: reuse same cl_dio_aio for one IO James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 17/42] lustre: llite: move iov iter forward by ourself James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 18/42] lustre: llite: report client stats sumsq James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 19/42] lnet: Support checking for MD leaks James Simmons
2020-10-06  0:05 ` [lustre-devel] [PATCH 20/42] lnet: don't read debugfs lnet stats when shutting down James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 21/42] lnet: Loosen restrictions on LNet Health params James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 22/42] lnet: Fix reference leak in lnet_select_pathway James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 23/42] lustre: llite: prune invalid dentries James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 24/42] lnet: Do not overwrite destination when routing James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 25/42] lustre: lov: don't use inline for operations functions James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 26/42] lustre: osc: don't allow negative grants James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 27/42] lustre: mgc: Use IR for client->MDS/OST connections James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 28/42] lustre: ldlm: don't use a locks without l_ast_data James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 29/42] lustre: lov: discard unused lov_dump_lmm* functions James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 30/42] lustre: lov: guard against class_exp2obd() returning NULL James Simmons
2020-10-06  0:06 ` James Simmons [this message]
2020-10-06  0:06 ` [lustre-devel] [PATCH 32/42] lustre: llite: it_lock_bits should be bit-wise tested James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 33/42] lustre: ldlm: control lru_size for extent lock James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 34/42] lustre: ldlm: pool fixes James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 35/42] lustre: ldlm: pool recalc forceful call James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 36/42] lustre: don't take spinlock to read a 'long' James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 37/42] lustre: osc: Do ELC on locks with no OSC object James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 38/42] lnet: deadlock on LNet shutdown James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 39/42] lustre: update version to 2.13.56 James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 40/42] lustre: llite: increase readahead default values James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 41/42] lustre: obdclass: don't initialize obj for zero FID James Simmons
2020-10-06  0:06 ` [lustre-devel] [PATCH 42/42] lustre: obdclass: fixes and improvements for jobid James Simmons

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