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* Btrfs-progs: fix the min ticks check in print_seek_histogramJosef Bacik2013-10-16
| | | | | | | | | | Before I had been dividing by 5 but that gave me too much output so I changed it to 20 without changing the min seeks test. Fix this to avoid a divide by 0 problem. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: check if device supports trimDavid Sterba2013-10-16
| | | | | | | | | The message about trim was printed unconditionally, we should check if trim is supported at all. Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: add a bunch of new statistics to btrfs-calc-sizeJosef Bacik2013-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I've been wanting to get back to the allocator and make some changes to try and fix our fragmenation woes with lots of metadata. But in order to make these changes I need to have something to tell me if my changes are making a real measurable difference. So this patch adds a bunch of new statistics to btrfs-calc-size. It will tell me how long it took to read in the trees, how many seeks it had (both forward and backward). It will tell me how far spread out the tree is and spit out a nice histogram of the seeks. Here is some sample output Calculating size of extent tree Total size: 60.74MB Inline data: 0.00 Total seeks: 5020 Forward seeks: 3691 Backward seeks: 1329 Avg seek len: 929.53MB Seek histogram 4096 - 4096: 1043 #### 8192 - 73728: 760 ### 81920 - 52527104: 753 ### 53518336 - 168009728: 753 ### 168591360 - 696045568: 753 ### 696238080 - 7560364032: 753 ### 7560437760 - 8409739264: 178 | Total clusters: 1874 Avg cluster size: 25.17KB Min cluster size: 8.00KB Max cluster size: 472.00KB Total disk spread: 7.90GB Total read time: 0 s 341670 us Levels: 4 This way we can have good numbers to back up any changes we make to the allocator. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: look up the containing tree root idDavid Sterba2013-10-16
| | | | | | | | | | Find the tree id of the containing subvolume for a given file or directory. For subvolume return it's own id. $ btrfs inspect-internal rootid <path> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: remove leftovers from hg timesDavid Sterba2013-10-16
| | | | | Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: remove unused parameter from btrfs_header_fsidRoss Kirk2013-10-16
| | | | | | | | | | Remove unused parameter, 'eb'. Unused since introduction in 7777e63b425f1444d2472ea05a6b2b9cf865f35b Signed-off-by: Ross Kirk <ross.kirk@gmail.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: drop unused parameter from btrfs_item_nrRoss Kirk2013-10-16
| | | | | | | | | | Remove unused eb parameter from btrfs_item_nr, unused since introduced in 7777e63b425f1444d2472ea05a6b2b9cf865f35b Signed-off-by: Ross Kirk <ross.kirk@gmail.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: add super-recover to recover bad supersWang Shilong2013-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Until now if one of device's first superblock is corrupt,btrfs will fail to mount. Luckily, btrfs have at least two superblocks for every disk. In theory, if silent corrupting happens when we are writting superblocks into disk, we must hold at least one good superblock. One side effect is that user must gurantee that the disk must be a btrfs disk. Otherwise, this tool may destroy other fs.(This is also reason why btrfs only use first superblock in every disk to mount) This little program will try to correct bad superblocks from good superblocks with max generation. There will be five kinds of return values: 0: all supers are valid, no need to recover 1: usage or syntax error 2: recover all bad superblocks successfully 3: fail to recover bad superblocks 4: abort to recover bad superblocks Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: move ask_user() to utils.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: pass flag to control whether run ioctl in btrfs_scan_for_fsid()Wang Shilong2013-10-16
| | | | | | | | | If some fatal superblocks are damaged, running ioctl will return failure, in this case, we should avoid run ioctl. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: do not run ioctls in check_mounted_where()Wang Shilong2013-10-16
| | | | | | | | | We don't need to run ioctls when checking whether btrfs has mounted somewhere. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: add list_sort and use it to sort devices by idDavid Sterba2013-10-16
| | | | | | | | The devices in 'btrfs filesystem show' are now sorted by the device id, currently the order was undefined. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: separate command and implementation of chunk-recover codeDavid Sterba2013-10-16
| | | | | | | | | | | | | The command has been moved and we should rename the files accordingly, so the entry point is now in cmds-rescue.c and the core functionality in it's own file. Return codes of btrfs_recover_chunk_tree have been simplified not to require a define and another file for defintion. CC: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: move chunk-recover to rescue groupDavid Sterba2013-10-16
| | | | | Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: introduce rescue command groupDavid Sterba2013-10-16
| | | | | | | | Add an empty 1st level command namespace that will collect specialized recovery tools like chunk-recover, zero-log, select-super and similar. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: add nodiscard option to device addDavid Sterba2013-10-16
| | | | | | | Same as for mkfs. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: use better name for nodiscard variable and flip the logicDavid Sterba2013-10-16
| | | | | Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in cmds-balance.cWang Shilong2013-10-16
| | | | | | | | | | | If there is no balance in progress, resume/pause/cancel will return 2. Usage or syntax errors will return 1. And 0 means operations return successfully. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Reviewed-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: fix -Wmissing-noreturnChris West (Faux)2013-10-16
| | | | | | Signed-off-by: "Chris West (Faux)" <git@goeswhere.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: 'optarg' shadows getoptChris West (Faux)2013-10-16
| | | | | | Signed-off-by: "Chris West (Faux)" <git@goeswhere.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: add ability to corrupt file extent disk bytenrJosef Bacik2013-10-16
| | | | | | | | | | A user had a corrupt fs where one of his file extents pointed to a completely bogus disk bytenr. This patch allows us to corrupt a file system in a similar way in order to test btrfsck. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: make btrfsck fix backrefs that are brokenJosef Bacik2013-10-16
| | | | | | | | | | | | | | | | If you set an file extent item's disk_bytenr to something completely wrong we won't be able to fix this if it is the only one who has a ref on the original disk bytenr. Our extent records know exactly who is supposed to point at them, so if we have an extent record that has no backrefs we can go and try to lookup the backrefs ourselves. If these backrefs do not point to an extent record that was actually found then we can be pretty sure this extent record is valid and the backref is bogus. Then the verify_backref code can do its thing and reset the backref to point to the right extent record and we can all carry on. This fixes a user reported corruption. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: allow fsck to fix directory isize errorsJosef Bacik2013-10-16
| | | | | | | | | | A user reported a problem where he was unable to rmdir an empty directory. This is because his isize was wrong. This patch will fix this sort of corruption and allow him to rmdir his directory. Thanks Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: setup framework to corrupt specific fields of an inodeJosef Bacik2013-10-16
| | | | | | | | | | | | | A user reported a problem with his fs where he had a bogus isize on his directory. In order to make sure my patch for fsck fixes this properly I needed to be able to corrupt an inode like this, which is what this patch is for. Eventually I want to extend this to corrupt everything so we can integrate tests into btrfs-progs to run btrfsck against to make sure we don't regress on fixing things with btrfsck. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: make btrfs-corrupt-block compile againDavid Sterba2013-10-16
| | | | | | | Reexport csum_tree_block. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix typo in btrfs_err_str()Wang Shilong2013-10-16
| | | | | | | | | Raid5 and raid6 at least need three and foure devices respectively, fix it. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: calculate available blocks on device properlyHidetoshi Seto2013-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I found that mkfs.btrfs aborts when assigned multi volumes contain a small volume: # parted /dev/sdf p Model: LSI MegaRAID SAS RMB (scsi) Disk /dev/sdf: 72.8GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 32.3kB 72.4GB 72.4GB primary 2 72.4GB 72.8GB 461MB primary # ./mkfs.btrfs -f /dev/sdf1 /dev/sdf2 : SMALL VOLUME: forcing mixed metadata/data groups adding device /dev/sdf2 id 2 mkfs.btrfs: volumes.c:852: btrfs_alloc_chunk: Assertion `!(ret)' failed. Aborted (core dumped) This failure of btrfs_alloc_chunk was caused by following steps: 1) since there is only small space in the small device, mkfs was going to allocate a chunk from free space as much as available. So mkfs called btrfs_alloc_chunk with size = device->total_bytes - device->used_bytes. 2) (According to the comment in source code, to avoid overwriting superblock,) btrfs_alloc_chunk starts taking chunks at an offset of 1MB. It means that the layout of a disk will be like: [[1MB at beginning for sb][allocated chunks]* ... free space ... ] and you can see that the available free space for allocation is: avail = device->total_bytes - device->used_bytes - 1MB. 3) Therefore there is only free space 1MB less than requested. damn. >From further investigations I also found that this issue is easily reproduced by using -A, --alloc-start option: # truncate --size=1G testfile # ./mkfs.btrfs -A900M -f testfile : mkfs.btrfs: volumes.c:852: btrfs_alloc_chunk: Assertion `!(ret)' failed. Aborted (core dumped) In this case there is only 100MB for allocation but btrfs_alloc_chunk was going to allocate more than the 100MB. The root cause of both of above troubles is a same simple bug: btrfs_chunk_alloc does not calculate available bytes properly even though it researches how many devices have enough room to have a chunk to be allocated. So this patch introduces new function btrfs_device_avail_bytes() which returns available bytes for allocation in specified device. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: error if device have no space to make primary chunksHidetoshi Seto2013-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous patch works fine if the size of specified volume to mkfs is less than 4MB. However usually btrfs requires more than 4MB to work, and the minimum preferred size is depending on the raid setting etc. This patch let mkfs print error message if it cannot allocate one of chunks should be there at first. [before] # truncate --size=4500K testfile # ./mkfs.btrfs -f testfile : SMALL VOLUME: forcing mixed metadata/data groups mkfs.btrfs: mkfs.c:84: make_root_dir: Assertion `!(ret)' failed. Aborted (core dumped) [After] # truncate --size=4500K testfile # ./mkfs.btrfs -f testfile : SMALL VOLUME: forcing mixed metadata/data groups no space to alloc data/metadata chunk failed to setup the root directory TBD is calculate minimum size for setting and put it in the error message to let user know how large amount of volume is required. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: error if device for mkfs is too smallHidetoshi Seto2013-10-16
| | | | | | | | | | | | | | | | | | | | Eric pointed out that mkfs abort if specified volume is too small: # truncate --size=2m testfile # ./mkfs.btrfs testfile : SMALL VOLUME: forcing mixed metadata/data groups mkfs.btrfs: volumes.c:852: btrfs_alloc_chunk: Assertion `!(ret)' failed. Aborted (core dumped) As the first step to fix problems around there, let mkfs to report error if the size of target volume is less than the size of the first system block group, BTRFS_MKFS_SYSTEM_GROUP_SIZE (= 4MB). Reported-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: btrfs_setup_chunk_tree_and_device_map: Return -EIO on error.chandan2013-10-16
| | | | | | | | | | As a result of a successful call to btrfs_read_sys_array(), the 'ret' variable is already set to 0. Hence the function would return 0 even if the call to read_tree_block() fails. Signed-off-by: chandan <chandan@linux.vnet.ibm.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: free strdup()s that are not freedGui Hecheng2013-10-16
| | | | | | | | The strdup()s not freed are reported as memory leaks by valgrind. Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: free the local list pending_list in btrfs_scan_one_dirGui Hecheng2013-10-16
| | | | | | | | | Originally the local pending_list is not guaranteed to be freed upon fails, it should be emptyed and the elements should be freed. Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: missing tree-freeing statements addedGui Hecheng2013-10-16
| | | | | | | | | The seen cache_tree in run_next_block freed. Originally, this "missing" causes memory leaks, reported by valgrind. Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: local variable memory freedGui Hecheng2013-10-16
| | | | | | | | | The local probe variable in is_ssd() freed upon unsuccessful return; The local dir_head list in make_image() freed upon unsuccessful return. Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: free local variable buf upon unsuccessful returnsGui Hecheng2013-10-16
| | | | | | | | | The variable "buf" passed into find_collision() as parameter "name" should be freed on unsuccessful returns. Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in cmds-scrub.cWang Shilong2013-10-16
| | | | | | | | | | | | | | | | | | | There will be four kinds of return value for command "scrub start": 0: scrub dosen't find errors and return success. 1: usage or syntax errors. 3: scrub finds errors and correct all of them. 4: scrub finds errors and some of them are not correctable. Three kinds of return values for scrub cancel/resume: 0: cancel successfully. 1: usage or syntax errors. 2: cancel a not started or finished scrub. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in cmds-replace.cWang Shilong2013-10-16
| | | | | | | | | | | | There are 3 kinds of return values in replace cancel: 0: cancel successfully. 1: usage or syntal errors 2: cancel a not started or finished replacing operations. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in random-test.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in dir-test.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in send-test.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in btrfs-zero-log.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in btrfs-imgae.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in cmds-send.cWang Shilong2013-10-16
| | | | | | | | If btrfs send return failure, we return 1，otherwise 0 will be returned. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in cmds-restore.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in cmds-receive.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in cmds-quota.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in cmds-qgroup.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in cmds-inspect.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in cmds-filesystem.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix magic return value in cmds-device.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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