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ocfs2: drop vmtruncate

PATCH In review Marco Stornelli 4 participants 5 messages Oct 6, 2012 – Oct 15, 2012

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#0 lore raw

PATCH 6/22 ocfs2: drop vmtruncate

Removed vmtruncate.

---
 fs/ocfs2/file.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
fs/ocfs2/file.c +2 -1
index 5a4ee77..f0737d0 100644
@@ -1229,11 +1229,12 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
 	 */
 	if ((attr->ia_valid & ATTR_SIZE) &&
 	    attr->ia_size != i_size_read(inode)) {
-		status = vmtruncate(inode, attr->ia_size);
+		status = inode_newsize_ok(inode, attr->ia_size);
 		if (status) {
 			mlog_errno(status);
 			goto bail_commit;
 		}
+		truncate_setsize(inode, attr->ia_size);
 	}
 
 	setattr_copy(inode, attr);
Signature · 1 line
1.7.3.4
#1 lore raw

fs/ocfs2/file.c int ocfs2_setattr(struct dentry *dentry, struct iattr *attr) · line 1237

Quoted 9 lines
fs/ocfs2/file.c +2 -1
 	if ((attr->ia_valid & ATTR_SIZE) &&
 	    attr->ia_size != i_size_read(inode)) {
-		status = vmtruncate(inode, attr->ia_size);
+		status = inode_newsize_ok(inode, attr->ia_size);
 		if (status) {
 			mlog_errno(status);
 			goto bail_commit;
 		}
+		truncate_setsize(inode, attr->ia_size);

ocfs2 already calls inode_newsize_ok earlier during ocfs2_setattr, and there's an XXX comment just above the vmtruncate call about how ocfs2 hacks around this. I suspect you just want a plain truncate_setsize here and remove the comment above it, but I'd like to have the ocfs2 folks confirm that.

#2 lore raw

Il 13/10/2012 18:19, Christoph Hellwig ha scritto:

Quoted 7 lines
Quoted 7 lines
  	if ((attr->ia_valid & ATTR_SIZE) &&
  	    attr->ia_size != i_size_read(inode)) {
fs/ocfs2/file.c +1 -1
-		status = vmtruncate(inode, attr->ia_size);
+		status = inode_newsize_ok(inode, attr->ia_size);
  		if (status) {
  			mlog_errno(status);
  			goto bail_commit;
Quoted 10 lines

fs/ocfs2/file.c int ocfs2_setattr(struct dentry *dentry, struct iattr *attr) · line 1237

Quoted 2 lines
  		}
fs/ocfs2/file.c +1 -0
+		truncate_setsize(inode, attr->ia_size);

ocfs2 already calls inode_newsize_ok earlier during ocfs2_setattr, and there's an XXX comment just above the vmtruncate call about how ocfs2 hacks around this. I suspect you just want a plain truncate_setsize here and remove the comment above it, but I'd like to have the ocfs2 folks confirm that.

Yep, I quite agree. truncate_setsize can be moved up into to the previous "if (size_change && attr->ia_size != i_size_read(inode))" where the truncate code does its work.

#3 lore raw

[Ocfs2-devel] New OOPS from OCFS2 + QUOTA

In reply to Christoph Hellwig

Hello
Today i get interesting oops on my OCFS2 FS - please take a look - mayby that`s help resolve problem with OCFS2 + QUOTA

INFO: task courier-pop3d:25955 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f213280 0 25955 1 0x00000000
ffff880e274bd7d0 0000000000000082 ffffffff81a0d020 0000000000013280 ffff88066d265fd8 0000000000013280 0000000000013280 0000000000013280 ffff88066d264000 0000000000013280 ffff88066d265fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff811181ae>] ? tlb_finish_mmu+0xe/0x50
[<ffffffff8111f2cb>] ? unmap_region+0x10b/0x150
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:26550 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f2d3280 0 26550 26548 0x00000000
ffff880d78a36040 0000000000000086 ffff8810207347d0 0000000000013280 ffff88021918ffd8 0000000000013280 0000000000013280 0000000000013280 ffff88021918e000 0000000000013280 ffff88021918ffd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff811181ae>] ? tlb_finish_mmu+0xe/0x50
[<ffffffff8111f2cb>] ? unmap_region+0x10b/0x150
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-imapd:27534 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-imapd D ffff88107f3d3280 0 27534 27533 0x00000000
ffff880e0dc5e810 0000000000000082 ffff8810200887d0 0000000000013280 ffff880e0b0c3fd8 0000000000013280 0000000000013280 0000000000013280 ffff880e0b0c2000 0000000000013280 ffff880e0b0c3fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:28301 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f253280 0 28301 3404 0x00000000
ffff880760255040 0000000000000082 ffff88102068a7d0 0000000000013280 ffff880d100fdfd8 0000000000013280 0000000000013280 0000000000013280 ffff880d100fc000 0000000000013280 ffff880d100fdfd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:28392 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f213280 0 28392 3404 0x00000000
ffff880f66ffc040 0000000000000082 ffffffff81a0d020 0000000000013280 ffff88016d4c3fd8 0000000000013280 0000000000013280 0000000000013280 ffff88016d4c2000 0000000000013280 ffff88016d4c3fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-imapd:28536 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-imapd D ffff88107f2d3280 0 28536 28535 0x00000000
ffff8804893dc810 0000000000000086 ffff8810207347d0 0000000000013280 ffff880e3d0d7fd8 0000000000013280 0000000000013280 0000000000013280 ffff880e3d0d6000 0000000000013280 ffff880e3d0d7fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:28587 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f253280 0 28587 3404 0x00000000
ffff880cdf6d5810 0000000000000086 ffff88102068a7d0 0000000000013280 ffff88039ab29fd8 0000000000013280 0000000000013280 0000000000013280 ffff88039ab28000 0000000000013280 ffff88039ab29fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:28790 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f273280 0 28790 3404 0x00000000
ffff88099f39f080 0000000000000082 ffff8810206ba040 0000000000013280 ffff880631f0dfd8 0000000000013280 0000000000013280 0000000000013280 ffff880631f0c000 0000000000013280 ffff880631f0dfd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:29041 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f273280 0 29041 3404 0x00000000
ffff88020210a810 0000000000000082 ffff8810206ba040 0000000000013280 ffff8802e4437fd8 0000000000013280 0000000000013280 0000000000013280 ffff8802e4436000 0000000000013280 ffff8802e4437fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:29086 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f233280 0 29086 1 0x00000000
ffff88041485c810 0000000000000086 ffff88102060c080 0000000000013280 ffff880a527e3fd8 0000000000013280 0000000000013280 0000000000013280 ffff880a527e2000 0000000000013280 ffff880a527e3fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffffa0ad3a27>] ? ocfs2_read_inode_block_full+0x37/0x60 [ocfs2]
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffffa0ac08c4>] ? ocfs2_lock_res_free+0x64/0x480 [ocfs2]
[<ffffffffa0ac15db>] ? ocfs2_simple_drop_lockres+0x2b/0xd0 [ocfs2]
[<ffffffff8115ab3a>] ? dput+0x2a/0x280
[<ffffffff8114687a>] ? __fput+0x15a/0x240
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b 
#4 lore raw

[Ocfs2-devel] New OOPS from OCFS2 + QUOTA

Hi Marek,

Thanks for the reporting!

Quoted 3 lines · Marek Kr?likowski

Hello
Today i get interesting oops on my OCFS2 FS - please take a look - mayby that`s help resolve problem with OCFS2 + QUOTA

Looks there are some processes performing cross-path renaming at that time, however, the demsg was truncated
due to cycle buffer was filled up maybe.

What's your kernel version?

Thanks,
-Jeff

Quoted 173 lines

INFO: task courier-pop3d:25955 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f213280 0 25955 1 0x00000000
ffff880e274bd7d0 0000000000000082 ffffffff81a0d020 0000000000013280 ffff88066d265fd8 0000000000013280 0000000000013280 0000000000013280 ffff88066d264000 0000000000013280 ffff88066d265fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff811181ae>] ? tlb_finish_mmu+0xe/0x50
[<ffffffff8111f2cb>] ? unmap_region+0x10b/0x150
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:26550 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f2d3280 0 26550 26548 0x00000000
ffff880d78a36040 0000000000000086 ffff8810207347d0 0000000000013280 ffff88021918ffd8 0000000000013280 0000000000013280 0000000000013280 ffff88021918e000 0000000000013280 ffff88021918ffd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff811181ae>] ? tlb_finish_mmu+0xe/0x50
[<ffffffff8111f2cb>] ? unmap_region+0x10b/0x150
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-imapd:27534 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-imapd D ffff88107f3d3280 0 27534 27533 0x00000000
ffff880e0dc5e810 0000000000000082 ffff8810200887d0 0000000000013280 ffff880e0b0c3fd8 0000000000013280 0000000000013280 0000000000013280 ffff880e0b0c2000 0000000000013280 ffff880e0b0c3fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:28301 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f253280 0 28301 3404 0x00000000
ffff880760255040 0000000000000082 ffff88102068a7d0 0000000000013280 ffff880d100fdfd8 0000000000013280 0000000000013280 0000000000013280 ffff880d100fc000 0000000000013280 ffff880d100fdfd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:28392 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f213280 0 28392 3404 0x00000000
ffff880f66ffc040 0000000000000082 ffffffff81a0d020 0000000000013280 ffff88016d4c3fd8 0000000000013280 0000000000013280 0000000000013280 ffff88016d4c2000 0000000000013280 ffff88016d4c3fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-imapd:28536 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-imapd D ffff88107f2d3280 0 28536 28535 0x00000000
ffff8804893dc810 0000000000000086 ffff8810207347d0 0000000000013280 ffff880e3d0d7fd8 0000000000013280 0000000000013280 0000000000013280 ffff880e3d0d6000 0000000000013280 ffff880e3d0d7fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:28587 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f253280 0 28587 3404 0x00000000
ffff880cdf6d5810 0000000000000086 ffff88102068a7d0 0000000000013280 ffff88039ab29fd8 0000000000013280 0000000000013280 0000000000013280 ffff88039ab28000 0000000000013280 ffff88039ab29fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:28790 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f273280 0 28790 3404 0x00000000
ffff88099f39f080 0000000000000082 ffff8810206ba040 0000000000013280 ffff880631f0dfd8 0000000000013280 0000000000013280 0000000000013280 ffff880631f0c000 0000000000013280 ffff880631f0dfd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:29041 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f273280 0 29041 3404 0x00000000
ffff88020210a810 0000000000000082 ffff8810206ba040 0000000000013280 ffff8802e4437fd8 0000000000013280 0000000000013280 0000000000013280 ffff8802e4436000 0000000000013280 ffff8802e4437fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffff8111f012>] ? remove_vma+0x52/0x70
[<ffffffff81120396>] ? do_munmap+0x2d6/0x360
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b
INFO: task courier-pop3d:29086 blocked for more than 120 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
courier-pop3d D ffff88107f233280 0 29086 1 0x00000000
ffff88041485c810 0000000000000086 ffff88102060c080 0000000000013280 ffff880a527e3fd8 0000000000013280 0000000000013280 0000000000013280 ffff880a527e2000 0000000000013280 ffff880a527e3fd8 0000000000013280

Call Trace:
[<ffffffff814bb881>] ? __mutex_lock_slowpath+0xd1/0x140
[<ffffffff8115287c>] ? do_path_lookup+0x2c/0xd0
[<ffffffff814bb5e3>] ? mutex_lock+0x23/0x40
[<ffffffff8114f485>] ? lock_rename+0x35/0xd0
[<ffffffff81154bd7>] ? sys_renameat+0x157/0x270
[<ffffffffa0ad3a27>] ? ocfs2_read_inode_block_full+0x37/0x60 [ocfs2]
[<ffffffff814c0498>] ? do_page_fault+0x228/0x4b0
[<ffffffffa0ac08c4>] ? ocfs2_lock_res_free+0x64/0x480 [ocfs2]
[<ffffffffa0ac15db>] ? ocfs2_simple_drop_lockres+0x2b/0xd0 [ocfs2]
[<ffffffff8115ab3a>] ? dput+0x2a/0x280
[<ffffffff8114687a>] ? __fput+0x15a/0x240
[<ffffffff814c4912>] ? system_call_fastpath+0x16/0x1b 

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