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* [PATCH v2] staging: lustre: llog: fix wrong offset in llog_process_thread()
@ 2016-11-17 19:43 ` James Simmons
  0 siblings, 0 replies; 4+ messages in thread
From: James Simmons @ 2016-11-17 19:43 UTC (permalink / raw)
  To: Greg Kroah-Hartman, devel, Andreas Dilger, Oleg Drokin
  Cc: Linux Kernel Mailing List, Lustre Development List,
	Mikhail Pershin, Bob Glossman, James Simmons

From: Mikhail Pershin <mike.pershin@intel.com>

- llh_cat_idx may become bigger than llog bitmap size in
  llog_cat_set_first_idx() function
- it is wrong to use previous cur_offset as new buffer offset,
  new offset should be calculated from value returned by
  llog_next_block().
- optimize llog_skip_over() to find llog entry offset by index
  for llog with fixed-size records.

Signed-off-by: Mikhail Pershin <mike.pershin@intel.com>
Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6714
Reviewed-on: http://review.whamcloud.com/15316
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6163
Reviewed-on: http://review.whamcloud.com/18819
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---

ChangeLog:

v1) Initial patch with umoddi issue
v2) Included fix from patch LU-6163 that fixed umoddi problem

 drivers/staging/lustre/lustre/obdclass/llog.c |   81 ++++++++++++++++++-------
 1 files changed, 58 insertions(+), 23 deletions(-)

diff --git a/drivers/staging/lustre/lustre/obdclass/llog.c b/drivers/staging/lustre/lustre/obdclass/llog.c
index 3bc1789..1d0c5a3 100644
--- a/drivers/staging/lustre/lustre/obdclass/llog.c
+++ b/drivers/staging/lustre/lustre/obdclass/llog.c
@@ -217,7 +217,7 @@ static int llog_process_thread(void *arg)
 	struct llog_log_hdr		*llh = loghandle->lgh_hdr;
 	struct llog_process_cat_data	*cd  = lpi->lpi_catdata;
 	char				*buf;
-	__u64				 cur_offset;
+	u64				 cur_offset, tmp_offset;
 	__u64				 last_offset;
 	int chunk_size;
 	int				 rc = 0, index = 1, last_index;
@@ -229,6 +229,8 @@ static int llog_process_thread(void *arg)
 
 	cur_offset = llh->llh_hdr.lrh_len;
 	chunk_size = llh->llh_hdr.lrh_len;
+	/* expect chunk_size to be power of two */
+	LASSERT(is_power_of_2(chunk_size));
 
 	buf = libcfs_kvzalloc(chunk_size, GFP_NOFS);
 	if (!buf) {
@@ -245,38 +247,50 @@ static int llog_process_thread(void *arg)
 	else
 		last_index = LLOG_HDR_BITMAP_SIZE(llh) - 1;
 
-	/* Record is not in this buffer. */
-	if (index > last_index)
-		goto out;
-
 	while (rc == 0) {
+		unsigned int buf_offset = 0;
 		struct llog_rec_hdr *rec;
+		bool partial_chunk;
+		off_t chunk_offset;
 
 		/* skip records not set in bitmap */
 		while (index <= last_index &&
 		       !ext2_test_bit(index, LLOG_HDR_BITMAP(llh)))
 			++index;
 
-		LASSERT(index <= last_index + 1);
-		if (index == last_index + 1)
+		if (index > last_index)
 			break;
-repeat:
+
 		CDEBUG(D_OTHER, "index: %d last_index %d\n",
 		       index, last_index);
-
+repeat:
 		/* get the buf with our target record; avoid old garbage */
 		memset(buf, 0, chunk_size);
-		last_offset = cur_offset;
 		rc = llog_next_block(lpi->lpi_env, loghandle, &saved_index,
 				     index, &cur_offset, buf, chunk_size);
 		if (rc)
 			goto out;
 
+		/*
+		 * NB: after llog_next_block() call the cur_offset is the
+		 * offset of the next block after read one.
+		 * The absolute offset of the current chunk is calculated
+		 * from cur_offset value and stored in chunk_offset variable.
+		 */
+		tmp_offset = cur_offset;
+		if (do_div(tmp_offset, chunk_size)) {
+			partial_chunk = true;
+			chunk_offset = cur_offset & ~(chunk_size - 1);
+		} else {
+			partial_chunk = false;
+			chunk_offset = cur_offset - chunk_size;
+		}
+
 		/* NB: when rec->lrh_len is accessed it is already swabbed
 		 * since it is used at the "end" of the loop and the rec
 		 * swabbing is done at the beginning of the loop.
 		 */
-		for (rec = (struct llog_rec_hdr *)buf;
+		for (rec = (struct llog_rec_hdr *)(buf + buf_offset);
 		     (char *)rec < buf + chunk_size;
 		     rec = llog_rec_hdr_next(rec)) {
 			CDEBUG(D_OTHER, "processing rec 0x%p type %#x\n",
@@ -288,13 +302,28 @@ static int llog_process_thread(void *arg)
 			CDEBUG(D_OTHER, "after swabbing, type=%#x idx=%d\n",
 			       rec->lrh_type, rec->lrh_index);
 
-			if (rec->lrh_index == 0) {
-				/* probably another rec just got added? */
-				rc = 0;
-				if (index <= loghandle->lgh_last_idx)
-					goto repeat;
-				goto out; /* no more records */
+			/*
+			 * for partial chunk the end of it is zeroed, check
+			 * for index 0 to distinguish it.
+			 */
+			if (partial_chunk && !rec->lrh_index) {
+				/* concurrent llog_add() might add new records
+				 * while llog_processing, check this is not
+				 * the case and re-read the current chunk
+				 * otherwise.
+				 */
+				if (index > loghandle->lgh_last_idx) {
+					rc = 0;
+					goto out;
+				}
+				CDEBUG(D_OTHER, "Re-read last llog buffer for new records, index %u, last %u\n",
+				       index, loghandle->lgh_last_idx);
+				/* save offset inside buffer for the re-read */
+				buf_offset = (char *)rec - (char *)buf;
+				cur_offset = chunk_offset;
+				goto repeat;
 			}
+
 			if (!rec->lrh_len || rec->lrh_len > chunk_size) {
 				CWARN("invalid length %d in llog record for index %d/%d\n",
 				      rec->lrh_len,
@@ -309,6 +338,14 @@ static int llog_process_thread(void *arg)
 				continue;
 			}
 
+			if (rec->lrh_index != index) {
+				CERROR("%s: Invalid record: index %u but expected %u\n",
+				       loghandle->lgh_ctxt->loc_obd->obd_name,
+				       rec->lrh_index, index);
+				rc = -ERANGE;
+				goto out;
+			}
+
 			CDEBUG(D_OTHER,
 			       "lrh_index: %d lrh_len: %d (%d remains)\n",
 			       rec->lrh_index, rec->lrh_len,
@@ -316,7 +353,7 @@ static int llog_process_thread(void *arg)
 
 			loghandle->lgh_cur_idx = rec->lrh_index;
 			loghandle->lgh_cur_offset = (char *)rec - (char *)buf +
-						    last_offset;
+						    chunk_offset;
 
 			/* if set, process the callback on this record */
 			if (ext2_test_bit(index, LLOG_HDR_BITMAP(llh))) {
@@ -325,16 +362,14 @@ static int llog_process_thread(void *arg)
 				last_called_index = index;
 				if (rc)
 					goto out;
-			} else {
-				CDEBUG(D_OTHER, "Skipped index %d\n", index);
 			}
 
-			/* next record, still in buffer? */
-			++index;
-			if (index > last_index) {
+			/* exit if the last index is reached */
+			if (index >= last_index) {
 				rc = 0;
 				goto out;
 			}
+			index++;
 		}
 	}
 
-- 
1.7.1

^ permalink raw reply related	[flat|nested] 4+ messages in thread

* [lustre-devel] [PATCH v2] staging: lustre: llog: fix wrong offset in llog_process_thread()
@ 2016-11-17 19:43 ` James Simmons
  0 siblings, 0 replies; 4+ messages in thread
From: James Simmons @ 2016-11-17 19:43 UTC (permalink / raw)
  To: Greg Kroah-Hartman, devel, Andreas Dilger, Oleg Drokin
  Cc: Linux Kernel Mailing List, Lustre Development List,
	Mikhail Pershin, Bob Glossman, James Simmons

From: Mikhail Pershin <mike.pershin@intel.com>

- llh_cat_idx may become bigger than llog bitmap size in
  llog_cat_set_first_idx() function
- it is wrong to use previous cur_offset as new buffer offset,
  new offset should be calculated from value returned by
  llog_next_block().
- optimize llog_skip_over() to find llog entry offset by index
  for llog with fixed-size records.

Signed-off-by: Mikhail Pershin <mike.pershin@intel.com>
Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6714
Reviewed-on: http://review.whamcloud.com/15316
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6163
Reviewed-on: http://review.whamcloud.com/18819
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---

ChangeLog:

v1) Initial patch with umoddi issue
v2) Included fix from patch LU-6163 that fixed umoddi problem

 drivers/staging/lustre/lustre/obdclass/llog.c |   81 ++++++++++++++++++-------
 1 files changed, 58 insertions(+), 23 deletions(-)

diff --git a/drivers/staging/lustre/lustre/obdclass/llog.c b/drivers/staging/lustre/lustre/obdclass/llog.c
index 3bc1789..1d0c5a3 100644
--- a/drivers/staging/lustre/lustre/obdclass/llog.c
+++ b/drivers/staging/lustre/lustre/obdclass/llog.c
@@ -217,7 +217,7 @@ static int llog_process_thread(void *arg)
 	struct llog_log_hdr		*llh = loghandle->lgh_hdr;
 	struct llog_process_cat_data	*cd  = lpi->lpi_catdata;
 	char				*buf;
-	__u64				 cur_offset;
+	u64				 cur_offset, tmp_offset;
 	__u64				 last_offset;
 	int chunk_size;
 	int				 rc = 0, index = 1, last_index;
@@ -229,6 +229,8 @@ static int llog_process_thread(void *arg)
 
 	cur_offset = llh->llh_hdr.lrh_len;
 	chunk_size = llh->llh_hdr.lrh_len;
+	/* expect chunk_size to be power of two */
+	LASSERT(is_power_of_2(chunk_size));
 
 	buf = libcfs_kvzalloc(chunk_size, GFP_NOFS);
 	if (!buf) {
@@ -245,38 +247,50 @@ static int llog_process_thread(void *arg)
 	else
 		last_index = LLOG_HDR_BITMAP_SIZE(llh) - 1;
 
-	/* Record is not in this buffer. */
-	if (index > last_index)
-		goto out;
-
 	while (rc == 0) {
+		unsigned int buf_offset = 0;
 		struct llog_rec_hdr *rec;
+		bool partial_chunk;
+		off_t chunk_offset;
 
 		/* skip records not set in bitmap */
 		while (index <= last_index &&
 		       !ext2_test_bit(index, LLOG_HDR_BITMAP(llh)))
 			++index;
 
-		LASSERT(index <= last_index + 1);
-		if (index == last_index + 1)
+		if (index > last_index)
 			break;
-repeat:
+
 		CDEBUG(D_OTHER, "index: %d last_index %d\n",
 		       index, last_index);
-
+repeat:
 		/* get the buf with our target record; avoid old garbage */
 		memset(buf, 0, chunk_size);
-		last_offset = cur_offset;
 		rc = llog_next_block(lpi->lpi_env, loghandle, &saved_index,
 				     index, &cur_offset, buf, chunk_size);
 		if (rc)
 			goto out;
 
+		/*
+		 * NB: after llog_next_block() call the cur_offset is the
+		 * offset of the next block after read one.
+		 * The absolute offset of the current chunk is calculated
+		 * from cur_offset value and stored in chunk_offset variable.
+		 */
+		tmp_offset = cur_offset;
+		if (do_div(tmp_offset, chunk_size)) {
+			partial_chunk = true;
+			chunk_offset = cur_offset & ~(chunk_size - 1);
+		} else {
+			partial_chunk = false;
+			chunk_offset = cur_offset - chunk_size;
+		}
+
 		/* NB: when rec->lrh_len is accessed it is already swabbed
 		 * since it is used at the "end" of the loop and the rec
 		 * swabbing is done at the beginning of the loop.
 		 */
-		for (rec = (struct llog_rec_hdr *)buf;
+		for (rec = (struct llog_rec_hdr *)(buf + buf_offset);
 		     (char *)rec < buf + chunk_size;
 		     rec = llog_rec_hdr_next(rec)) {
 			CDEBUG(D_OTHER, "processing rec 0x%p type %#x\n",
@@ -288,13 +302,28 @@ static int llog_process_thread(void *arg)
 			CDEBUG(D_OTHER, "after swabbing, type=%#x idx=%d\n",
 			       rec->lrh_type, rec->lrh_index);
 
-			if (rec->lrh_index == 0) {
-				/* probably another rec just got added? */
-				rc = 0;
-				if (index <= loghandle->lgh_last_idx)
-					goto repeat;
-				goto out; /* no more records */
+			/*
+			 * for partial chunk the end of it is zeroed, check
+			 * for index 0 to distinguish it.
+			 */
+			if (partial_chunk && !rec->lrh_index) {
+				/* concurrent llog_add() might add new records
+				 * while llog_processing, check this is not
+				 * the case and re-read the current chunk
+				 * otherwise.
+				 */
+				if (index > loghandle->lgh_last_idx) {
+					rc = 0;
+					goto out;
+				}
+				CDEBUG(D_OTHER, "Re-read last llog buffer for new records, index %u, last %u\n",
+				       index, loghandle->lgh_last_idx);
+				/* save offset inside buffer for the re-read */
+				buf_offset = (char *)rec - (char *)buf;
+				cur_offset = chunk_offset;
+				goto repeat;
 			}
+
 			if (!rec->lrh_len || rec->lrh_len > chunk_size) {
 				CWARN("invalid length %d in llog record for index %d/%d\n",
 				      rec->lrh_len,
@@ -309,6 +338,14 @@ static int llog_process_thread(void *arg)
 				continue;
 			}
 
+			if (rec->lrh_index != index) {
+				CERROR("%s: Invalid record: index %u but expected %u\n",
+				       loghandle->lgh_ctxt->loc_obd->obd_name,
+				       rec->lrh_index, index);
+				rc = -ERANGE;
+				goto out;
+			}
+
 			CDEBUG(D_OTHER,
 			       "lrh_index: %d lrh_len: %d (%d remains)\n",
 			       rec->lrh_index, rec->lrh_len,
@@ -316,7 +353,7 @@ static int llog_process_thread(void *arg)
 
 			loghandle->lgh_cur_idx = rec->lrh_index;
 			loghandle->lgh_cur_offset = (char *)rec - (char *)buf +
-						    last_offset;
+						    chunk_offset;
 
 			/* if set, process the callback on this record */
 			if (ext2_test_bit(index, LLOG_HDR_BITMAP(llh))) {
@@ -325,16 +362,14 @@ static int llog_process_thread(void *arg)
 				last_called_index = index;
 				if (rc)
 					goto out;
-			} else {
-				CDEBUG(D_OTHER, "Skipped index %d\n", index);
 			}
 
-			/* next record, still in buffer? */
-			++index;
-			if (index > last_index) {
+			/* exit if the last index is reached */
+			if (index >= last_index) {
 				rc = 0;
 				goto out;
 			}
+			index++;
 		}
 	}
 
-- 
1.7.1

^ permalink raw reply related	[flat|nested] 4+ messages in thread

* Re: [PATCH v2] staging: lustre: llog: fix wrong offset in llog_process_thread()
  2016-11-17 19:43 ` [lustre-devel] " James Simmons
@ 2016-11-17 21:46   ` kbuild test robot
  -1 siblings, 0 replies; 4+ messages in thread
From: kbuild test robot @ 2016-11-17 21:46 UTC (permalink / raw)
  To: James Simmons
  Cc: kbuild-all, Greg Kroah-Hartman, devel, Andreas Dilger,
	Oleg Drokin, Bob Glossman, Linux Kernel Mailing List,
	Mikhail Pershin, Lustre Development List

[-- Attachment #1: Type: text/plain, Size: 3059 bytes --]

Hi Mikhail,

[auto build test WARNING on staging/staging-testing]
[also build test WARNING on next-20161117]
[cannot apply to v4.9-rc5]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/James-Simmons/staging-lustre-llog-fix-wrong-offset-in-llog_process_thread/20161118-042856
config: i386-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   drivers/staging/lustre/lustre/obdclass/llog.c: In function 'llog_process_thread':
>> drivers/staging/lustre/lustre/obdclass/llog.c:221:12: warning: unused variable 'last_offset' [-Wunused-variable]
     __u64     last_offset;
               ^~~~~~~~~~~

vim +/last_offset +221 drivers/staging/lustre/lustre/obdclass/llog.c

d7e09d039 Peng Tao           2013-05-02  205  	if (rc) {
11c647caf Andreas Dilger     2016-10-27  206  		kvfree(llh);
d7e09d039 Peng Tao           2013-05-02  207  		handle->lgh_hdr = NULL;
d7e09d039 Peng Tao           2013-05-02  208  	}
0a3bdb007 Greg Kroah-Hartman 2013-08-03  209  	return rc;
d7e09d039 Peng Tao           2013-05-02  210  }
d7e09d039 Peng Tao           2013-05-02  211  EXPORT_SYMBOL(llog_init_handle);
d7e09d039 Peng Tao           2013-05-02  212  
d7e09d039 Peng Tao           2013-05-02  213  static int llog_process_thread(void *arg)
d7e09d039 Peng Tao           2013-05-02  214  {
d7e09d039 Peng Tao           2013-05-02  215  	struct llog_process_info	*lpi = arg;
d7e09d039 Peng Tao           2013-05-02  216  	struct llog_handle		*loghandle = lpi->lpi_loghandle;
d7e09d039 Peng Tao           2013-05-02  217  	struct llog_log_hdr		*llh = loghandle->lgh_hdr;
d7e09d039 Peng Tao           2013-05-02  218  	struct llog_process_cat_data	*cd  = lpi->lpi_catdata;
d7e09d039 Peng Tao           2013-05-02  219  	char				*buf;
ede733b28 Mikhail Pershin    2016-11-17  220  	u64				 cur_offset, tmp_offset;
d7e09d039 Peng Tao           2013-05-02 @221  	__u64				 last_offset;
11c647caf Andreas Dilger     2016-10-27  222  	int chunk_size;
d7e09d039 Peng Tao           2013-05-02  223  	int				 rc = 0, index = 1, last_index;
d7e09d039 Peng Tao           2013-05-02  224  	int				 saved_index = 0;
d7e09d039 Peng Tao           2013-05-02  225  	int				 last_called_index = 0;
d7e09d039 Peng Tao           2013-05-02  226  
11c647caf Andreas Dilger     2016-10-27  227  	if (!llh)
11c647caf Andreas Dilger     2016-10-27  228  		return -EINVAL;
11c647caf Andreas Dilger     2016-10-27  229  

:::::: The code at line 221 was first introduced by commit
:::::: d7e09d0397e84eefbabfd9cb353221f3c6448d83 staging: add Lustre file system client support

:::::: TO: Peng Tao <bergwolf@gmail.com>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 56934 bytes --]

^ permalink raw reply	[flat|nested] 4+ messages in thread

* [lustre-devel] [PATCH v2] staging: lustre: llog: fix wrong offset in llog_process_thread()
@ 2016-11-17 21:46   ` kbuild test robot
  0 siblings, 0 replies; 4+ messages in thread
From: kbuild test robot @ 2016-11-17 21:46 UTC (permalink / raw)
  To: lustre-devel

Hi Mikhail,

[auto build test WARNING on staging/staging-testing]
[also build test WARNING on next-20161117]
[cannot apply to v4.9-rc5]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/James-Simmons/staging-lustre-llog-fix-wrong-offset-in-llog_process_thread/20161118-042856
config: i386-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   drivers/staging/lustre/lustre/obdclass/llog.c: In function 'llog_process_thread':
>> drivers/staging/lustre/lustre/obdclass/llog.c:221:12: warning: unused variable 'last_offset' [-Wunused-variable]
     __u64     last_offset;
               ^~~~~~~~~~~

vim +/last_offset +221 drivers/staging/lustre/lustre/obdclass/llog.c

d7e09d039 Peng Tao           2013-05-02  205  	if (rc) {
11c647caf Andreas Dilger     2016-10-27  206  		kvfree(llh);
d7e09d039 Peng Tao           2013-05-02  207  		handle->lgh_hdr = NULL;
d7e09d039 Peng Tao           2013-05-02  208  	}
0a3bdb007 Greg Kroah-Hartman 2013-08-03  209  	return rc;
d7e09d039 Peng Tao           2013-05-02  210  }
d7e09d039 Peng Tao           2013-05-02  211  EXPORT_SYMBOL(llog_init_handle);
d7e09d039 Peng Tao           2013-05-02  212  
d7e09d039 Peng Tao           2013-05-02  213  static int llog_process_thread(void *arg)
d7e09d039 Peng Tao           2013-05-02  214  {
d7e09d039 Peng Tao           2013-05-02  215  	struct llog_process_info	*lpi = arg;
d7e09d039 Peng Tao           2013-05-02  216  	struct llog_handle		*loghandle = lpi->lpi_loghandle;
d7e09d039 Peng Tao           2013-05-02  217  	struct llog_log_hdr		*llh = loghandle->lgh_hdr;
d7e09d039 Peng Tao           2013-05-02  218  	struct llog_process_cat_data	*cd  = lpi->lpi_catdata;
d7e09d039 Peng Tao           2013-05-02  219  	char				*buf;
ede733b28 Mikhail Pershin    2016-11-17  220  	u64				 cur_offset, tmp_offset;
d7e09d039 Peng Tao           2013-05-02 @221  	__u64				 last_offset;
11c647caf Andreas Dilger     2016-10-27  222  	int chunk_size;
d7e09d039 Peng Tao           2013-05-02  223  	int				 rc = 0, index = 1, last_index;
d7e09d039 Peng Tao           2013-05-02  224  	int				 saved_index = 0;
d7e09d039 Peng Tao           2013-05-02  225  	int				 last_called_index = 0;
d7e09d039 Peng Tao           2013-05-02  226  
11c647caf Andreas Dilger     2016-10-27  227  	if (!llh)
11c647caf Andreas Dilger     2016-10-27  228  		return -EINVAL;
11c647caf Andreas Dilger     2016-10-27  229  

:::::: The code at line 221 was first introduced by commit
:::::: d7e09d0397e84eefbabfd9cb353221f3c6448d83 staging: add Lustre file system client support

:::::: TO: Peng Tao <bergwolf@gmail.com>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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2016-11-17 19:43 [PATCH v2] staging: lustre: llog: fix wrong offset in llog_process_thread() James Simmons
2016-11-17 19:43 ` [lustre-devel] " James Simmons
2016-11-17 21:46 ` kbuild test robot
2016-11-17 21:46   ` [lustre-devel] " kbuild test robot

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