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* ocfs2: make append_dio an incompat featureMark Fasheh2015-03-12
| | | | | | | | | | | | | | | | | | | | | | It turns out that making this feature ro_compat isn't quite enough to prevent accidental corruption on mount from older kernels. Ocfs2 (like other file systems) will process orphaned inodes even when the user mounts in 'ro' mode. So for the case of a filesystem not knowing the append_dio feature, mounting the filesystem could result in orphaned-for-dio files being deleted, which we clearly don't want. So instead, turn this into an incompat flag. Btw, this is kind of my fault - initially I asked that we add a flag to cover the feature and even suggested that we use an ro flag. It wasn't until I was looking through our commits for v4.0-rc1 that I realized we actually want this to be incompat. Signed-off-by: Mark Fasheh <mfasheh@suse.de> Cc: Joseph Qi <joseph.qi@huawei.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: set append dio as a ro compat featureJoseph Qi2015-02-16
| | | | | | | | | | | | | | | Intruduce a bit OCFS2_FEATURE_RO_COMPAT_APPEND_DIO and check it in write flow. If the bit is not set, fall back to the old way. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Weiwei Wang <wangww631@huawei.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Xuejiufei <xuejiufei@huawei.com> Cc: alex chen <alex.chen@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: wait for orphan recovery first once append O_DIRECT write crashJoseph Qi2015-02-16
| | | | | | | | | | | | | | | | | If one node has crashed with orphan entry leftover, another node which do append O_DIRECT write to the same file will override the i_dio_orphaned_slot. Then the old entry won't be cleaned forever. If this case happens, we let it wait for orphan recovery first. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Weiwei Wang <wangww631@huawei.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Xuejiufei <xuejiufei@huawei.com> Cc: alex chen <alex.chen@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: complete the rest request through buffer ioJoseph Qi2015-02-16
| | | | | | | | | | | | | | Complte the rest request thourgh buffer io after direct write performed. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Weiwei Wang <wangww631@huawei.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Xuejiufei <xuejiufei@huawei.com> Cc: alex chen <alex.chen@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: do not fallback to buffer I/O write if appendingJoseph Qi2015-02-16
| | | | | | | | | | | | | | | Now we can do direct io and do not fallback to buffered IO any more in case of append O_DIRECT write. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Weiwei Wang <wangww631@huawei.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Xuejiufei <xuejiufei@huawei.com> Cc: alex chen <alex.chen@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: allocate blocks in ocfs2_direct_IO_get_blocksJoseph Qi2015-02-16
| | | | | | | | | | | | | | Allow blocks allocation in ocfs2_direct_IO_get_blocks. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Weiwei Wang <wangww631@huawei.com> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Xuejiufei <xuejiufei@huawei.com> Cc: alex chen <alex.chen@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: implement ocfs2_direct_IO_writeJoseph Qi2015-02-16
| | | | | | | | | | | | | | | | | | Implement ocfs2_direct_IO_write. Add the inode to orphan dir first, and then delete it once append O_DIRECT finished. This is to make sure block allocation and inode size are consistent. [akpm@linux-foundation.org: fix it for "block: Add discard flag to blkdev_issue_zeroout() function"] Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Weiwei Wang <wangww631@huawei.com> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Xuejiufei <xuejiufei@huawei.com> Cc: alex chen <alex.chen@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: add orphan recovery types in ocfs2_recover_orphansJoseph Qi2015-02-16
| | | | | | | | | | | | | | | Define two orphan recovery types, which indicates if need truncate file or not. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Weiwei Wang <wangww631@huawei.com> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Xuejiufei <xuejiufei@huawei.com> Cc: alex chen <alex.chen@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: add functions to add and remove inode in orphan dirJoseph Qi2015-02-16
| | | | | | | | | | | | | | | | | | | Add functions to add inode to orphan dir and remove inode in orphan dir. Here we do not call ocfs2_prepare_orphan_dir and ocfs2_orphan_add directly. Because append O_DIRECT will add inode to orphan two and may result in more than one orphan entry for the same inode. [akpm@linux-foundation.org: avoid dynamic stack allocation] Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Weiwei Wang <wangww631@huawei.com> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Xuejiufei <xuejiufei@huawei.com> Cc: alex chen <alex.chen@huawei.com> Cc: Fengguang Wu <fengguang.wu@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: prepare some interfaces used in append direct ioJoseph Qi2015-02-16
| | | | | | | | | | | | | | | | | | | | | | | | | Currently in case of append O_DIRECT write (block not allocated yet), ocfs2 will fall back to buffered I/O. This has some disadvantages. Firstly, it is not the behavior as expected. Secondly, it will consume huge page cache, e.g. in mass backup scenario. Thirdly, modern filesystems such as ext4 support this feature. In this patch set, the direct I/O write doesn't fallback to buffer I/O write any more because the allocate blocks are enabled in direct I/O now. This patch (of 9): Prepare some interfaces which will be used in append O_DIRECT write. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Weiwei Wang <wangww631@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Xuejiufei <xuejiufei@huawei.com> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: alex chen <alex.chen@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-blockLinus Torvalds2015-02-12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull backing device changes from Jens Axboe: "This contains a cleanup of how the backing device is handled, in preparation for a rework of the life time rules. In this part, the most important change is to split the unrelated nommu mmap flags from it, but also removing a backing_dev_info pointer from the address_space (and inode), and a cleanup of other various minor bits. Christoph did all the work here, I just fixed an oops with pages that have a swap backing. Arnd fixed a missing export, and Oleg killed the lustre backing_dev_info from staging. Last patch was from Al, unexporting parts that are now no longer needed outside" * 'for-3.20/bdi' of git://git.kernel.dk/linux-block: Make super_blocks and sb_lock static mtd: export new mtd_mmap_capabilities fs: make inode_to_bdi() handle NULL inode staging/lustre/llite: get rid of backing_dev_info fs: remove default_backing_dev_info fs: don't reassign dirty inodes to default_backing_dev_info nfs: don't call bdi_unregister ceph: remove call to bdi_unregister fs: remove mapping->backing_dev_info fs: export inode_to_bdi and use it in favor of mapping->backing_dev_info nilfs2: set up s_bdi like the generic mount_bdev code block_dev: get bdev inode bdi directly from the block device block_dev: only write bdev inode on close fs: introduce f_op->mmap_capabilities for nommu mmap support fs: kill BDI_CAP_SWAP_BACKED fs: deduplicate noop_backing_dev_info
| * fs: remove mapping->backing_dev_infoChristoph Hellwig2015-01-20
| | | | | | | | | | | | | | | | | | | | | | Now that we never use the backing_dev_info pointer in struct address_space we can simply remove it and save 4 to 8 bytes in every inode. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Reviewed-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
| * fs: export inode_to_bdi and use it in favor of mapping->backing_dev_infoChristoph Hellwig2015-01-20
| | | | | | | | | | | | | | | | | | | | | | | | | | Now that we got rid of the bdi abuse on character devices we can always use sb->s_bdi to get at the backing_dev_info for a file, except for the block device special case. Export inode_to_bdi and replace uses of mapping->backing_dev_info with it to prepare for the removal of mapping->backing_dev_info. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
| * fs: deduplicate noop_backing_dev_infoChristoph Hellwig2015-01-20
| | | | | | | | | | | | | | | | | | | | hugetlbfs, kernfs and dlmfs can simply use noop_backing_dev_info instead of creating a local duplicate. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@fb.com>
* | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2015-02-10
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge misc updates from Andrew Morton: "Bite-sized chunks this time, to avoid the MTA ratelimiting woes. - fs/notify updates - ocfs2 - some of MM" That laconic "some MM" is mainly the removal of remap_file_pages(), which is a big simplification of the VM, and which gets rid of a *lot* of random cruft and special cases because we no longer support the non-linear mappings that it used. From a user interface perspective, nothing has changed, because the remap_file_pages() syscall still exists, it's just done by emulating the old behavior by creating a lot of individual small mappings instead of one non-linear one. The emulation is slower than the old "native" non-linear mappings, but nobody really uses or cares about remap_file_pages(), and simplifying the VM is a big advantage. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (78 commits) memcg: zap memcg_slab_caches and memcg_slab_mutex memcg: zap memcg_name argument of memcg_create_kmem_cache memcg: zap __memcg_{charge,uncharge}_slab mm/page_alloc.c: place zone_id check before VM_BUG_ON_PAGE check mm: hugetlb: fix type of hugetlb_treat_as_movable variable mm, hugetlb: remove unnecessary lower bound on sysctl handlers"? mm: memory: merge shared-writable dirtying branches in do_wp_page() mm: memory: remove ->vm_file check on shared writable vmas xtensa: drop _PAGE_FILE and pte_file()-related helpers x86: drop _PAGE_FILE and pte_file()-related helpers unicore32: drop pte_file()-related helpers um: drop _PAGE_FILE and pte_file()-related helpers tile: drop pte_file()-related helpers sparc: drop pte_file()-related helpers sh: drop _PAGE_FILE and pte_file()-related helpers score: drop _PAGE_FILE and pte_file()-related helpers s390: drop pte_file()-related helpers parisc: drop _PAGE_FILE and pte_file()-related helpers openrisc: drop _PAGE_FILE and pte_file()-related helpers nios2: drop _PAGE_FILE and pte_file()-related helpers ...
| * | mm: drop vm_ops->remap_pages and generic_file_remap_pages() stubKirill A. Shutemov2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nobody uses it anymore. [akpm@linux-foundation.org: fix filemap_xip.c] Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | o2dlm: fix NULL pointer dereference in o2dlm_blocking_ast_wrapperSrinivas Eeda2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A tiny race between BAST and unlock message causes the NULL dereference. A node sends an unlock request to master and receives a response. Before processing the response it receives a BAST from the master. Since both requests are processed by different threads it creates a race. While the BAST is being processed, lock can get freed by unlock code. This patch makes bast to return immediately if lock is found but unlock is pending. The code should handle this race. We also have to fix master node to skip sending BAST after receiving unlock message. Below is the crash stack BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 IP: o2dlm_blocking_ast_wrapper+0xd/0x16 dlm_do_local_bast+0x8e/0x97 [ocfs2_dlm] dlm_proxy_ast_handler+0x838/0x87e [ocfs2_dlm] o2net_process_message+0x395/0x5b8 [ocfs2_nodemanager] o2net_rx_until_empty+0x762/0x90d [ocfs2_nodemanager] worker_thread+0x14d/0x1ed [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Joseph Qi <joseph.qi@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: prune the dcache before deleting the dentry of directoryalex chen2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In ocfs2_dentry_convert_worker, we should prune the dcache before deleting the dentry of directory, otherwise, in the following cases the inode of directory will still remain in orphan directory until the device being umounted. Mount point: /mnt/ocfs2 Node A Node B mkdir /mnt/ocfs2/testdir ocfs2_mkdir ->ocfs2_mknod ->ocfs2_dentry_attach_lock ->ocfs2_dentry_lock(dentry, 0) ... ... touch /mnt/ocfs2/testdir/testfile unlink /mnt/test/testdir/testfile rmdir /mnt/ocfs2/testdir ocfs2_unlink ->ocfs2_remote_dentry_delete ->ocfs2_dentry_lock(dentry, 1) ... ... ... ... ocfs2_downconvert_thread ->ocfs2_unblock_lock ->ocfs2_dentry_convert_worker ->ocfs2_find_local_alias ->dget_dlock ->d_delete Here the dentry can not be released because the children's dentry is negative but still exist. Finally, this inode will still remain in orphan directory until its children are destroyed. So before deleting dentry of directory, we should prune the dcache to remove unused children of the parent dentry by shrink_dcache_parent(). Signed-off-by: Alex Chen <alex.chen@huawei.com> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Reviewed-by: joyce.xue <xuejiufei@huawei.com> Reviewed-by: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: make resv_lock spinlock staticFabian Frederick2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | resv_lock is only used in reservations.c Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: remove unreachable code in __ocfs2_recovery_thread()Daeseok Youn2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: removes mlog_errno() call twice in ocfs2_find_dir_space_el()Daeseok Youn2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mlog_errno() is called twice when some functions are failed. Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: remove unreachable codeDaeseok Youn2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: o2net: silence uninitialized variable warningDan Carpenter2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Smatch complains that, if o2net_tx_can_proceed() returns false, then "sc" and "ret" are uninialized or maybe we are re-using the data from previous iteration. I do not know if we can hit this bug in real life but checking the return value is harmless and we may as well silence the static checker warning. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: remove pointless assignment from ocfs2_calc_refcount_meta_credits()Jan Kara2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The assigned value is never used. Coverity-id 1226847. Signed-off-by: Jan Kara <jack@suse.cz> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: add a mount option journal_async_commit on ocfs2 filesystemalex chen2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a mount option to support JBD2 feature: JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT. When this feature is opened, journal commit block can be written to disk without waiting for descriptor blocks, which can improve journal commit performance. This option will enable 'journal_checksum' internally. Using the fs_mark benchmark, using journal_async_commit shows a 50% improvement, the files per second go up from 215.2 to 317.5. test script: fs_mark -d /mnt/ocfs2/ -s 10240 -n 1000 default: FSUse% Count Size Files/sec App Overhead 0 1000 10240 215.2 17878 with journal_async_commit option: FSUse% Count Size Files/sec App Overhead 0 1000 10240 317.5 17881 Signed-off-by: Alex Chen <alex.chen@huawei.com> Signed-off-by: Weiwei Wang <wangww631@huawei.comm> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: fix journal commit deadlock in ocfs2_convert_inline_data_to_extentsalex chen2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Similar to ocfs2_write_end_nolock() which is metioned at commit 136f49b91710 ("ocfs2: fix journal commit deadlock"), we should unlock pages before ocfs2_commit_trans() in ocfs2_convert_inline_data_to_extents. Otherwise, it will cause a deadlock with journal commit threads. Signed-off-by: Alex Chen <alex.chen@huawei.com> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: dlm: dlmdomain: remove unused functionRickard Strandqvist2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove dlm_joined() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: quota_local: remove unused functionRickard Strandqvist2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove ol_dqblk_file_block() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: xattr: remove unused functionRickard Strandqvist2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove ocfs2_xattr_bucket_get_val() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: fix snprintf format specifier in dlmdebug.calex chen2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use snprintf format specifier "%lu" instead of "%ld" for argument of type 'unsigned long'. Signed-off-by: Alex Chen <alex.chen@huawei.com> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: fix wrong commentJunxiao Bi2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | O2NET_CONN_IDLE_DELAY is not defined, connection attempts will not be canceled due to timeout. Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: fix uninitialized variable accessJunxiao Bi2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Variable "why" is not yet initialized at line 615, fix it. Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2: remove unnecessary else in ocfs2_set_acl()Fabian Frederick2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | else is unnecessary after return. Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | ocfs2/dlm: add missing dlm_lock_put() when recovery master downXue jiufei2015-02-10
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the recovery master is down, the owner of $RECOVERY calls dlm_do_local_recovery_cleanup() to prune any $RECOVERY entries for dead nodes. The lock is in the granted list and the refcount must be 2. We should put twice to remove this lock. Otherwise, it will lead to a memory leak. Signed-off-by: joyce.xue <xuejiufei@huawei.com> Reported-by: yangwenfang <vicky.yangwenfang@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | quota: Store maximum space limit in bytesJan Kara2015-01-30
| | | | | | | | | | | | | | | | | | | | Currently maximum space limit quota format supports is in blocks however since we store space limits in bytes, this is somewhat confusing. So store the maximum limit in bytes as well. Also rename the field to match the new unit and related inode field to match the new naming scheme. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
* | ocfs2: Use generic helpers for quotaon and quotaoffJan Kara2015-01-30
| | | | | | | | | | | | | | | | | | | | | | Ocfs2 can just use the generic helpers provided by quota code for turning quotas on and off when quota files are stored as system inodes. The only difference is the feature test in ocfs2_quota_on() and that is covered by dquot_quota_enable() checking whether usage tracking is enabled (which can happen only if the filesystem has the quota feature set). Signed-off-by: Jan Kara <jack@suse.cz>
* | Merge branch 'for_linus' into for_nextJan Kara2015-01-30
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| * ocfs2: fix the wrong directory passed to ocfs2_lookup_ino_from_name() when ↵Xue jiufei2015-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | link file In ocfs2_link(), the parent directory inode passed to function ocfs2_lookup_ino_from_name() is wrong. Parameter dir is the parent of new_dentry not old_dentry. We should get old_dir from old_dentry and lookup old_dentry in old_dir in case another node remove the old dentry. With this change, hard linking works again, when paths are relative with at least one subdirectory. This is how the problem was reproducable: # mkdir a # mkdir b # touch a/test # ln a/test b/test ln: failed to create hard link `b/test' => `a/test': No such file or directory However when creating links in the same dir, it worked well. Now the link gets created. Fixes: 0e048316ff57 ("ocfs2: check existence of old dentry in ocfs2_link()") Signed-off-by: joyce.xue <xuejiufei@huawei.com> Reported-by: Szabo Aron - UBIT <aron@ubit.hu> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Tested-by: Aron Szabo <aron@ubit.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * ocfs2: remove bogus check in dlm_process_recovery_dataJoseph Qi2015-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | In dlm_process_recovery_data, only when dlm_new_lock failed the ret will be set to -ENOMEM. And in this case, newlock is definitely NULL. So test newlock is meaningless, remove it. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Reviewed-by: Alex Chen <alex.chen@huawei.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ocfs2: Move OLQF_CLEAN flag out of generic quota flagsJan Kara2015-01-21
|/ | | | | | | | | OLQF_CLEAN flag is used by OCFS2 on disk to recognize whether quota recovery is needed or not. We also somewhat abuse mem_dqinfo->dqi_flags to pass this flag around. Use private flags for this to avoid clashes with other quota flags / not pollute generic quota flag namespace. Signed-off-by: Jan Kara <jack@suse.cz>
* ocfs2: fix journal commit deadlockJunxiao Bi2014-12-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | For buffer write, page lock will be got in write_begin and released in write_end, in ocfs2_write_end_nolock(), before it unlock the page in ocfs2_free_write_ctxt(), it calls ocfs2_run_deallocs(), this will ask for the read lock of journal->j_trans_barrier. Holding page lock and ask for journal->j_trans_barrier breaks the locking order. This will cause a deadlock with journal commit threads, ocfs2cmt will get write lock of journal->j_trans_barrier first, then it wakes up kjournald2 to do the commit work, at last it waits until done. To commit journal, kjournald2 needs flushing data first, it needs get the cache page lock. Since some ocfs2 cluster locks are holding by write process, this deadlock may hung the whole cluster. unlock pages before ocfs2_run_deallocs() can fix the locking order, also put unlock before ocfs2_commit_trans() to make page lock is unlocked before j_trans_barrier to preserve unlocking order. Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Reviewed-by: Wengang Wang <wen.gang.wang@oracle.com> Cc: <stable@vger.kernel.org> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2/dlm: fix race between dispatched_work and dlm_lockres_grab_inflight_workerJoseph Qi2014-12-18
| | | | | | | | | | | | | | | | | | | | | | | | Commit ac4fef4d23ed ("ocfs2/dlm: do not purge lockres that is queued for assert master") may have the following possible race case: dlm_dispatch_assert_master dlm_wq ======================================================================== queue_work(dlm->quedlm_worker, &dlm->dispatched_work); dispatch work, dlm_lockres_drop_inflight_worker *BUG_ON(res->inflight_assert_workers == 0)* dlm_lockres_grab_inflight_worker inflight_assert_workers++ So ensure inflight_assert_workers to be increased first. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Signed-off-by: Xue jiufei <xuejiufei@huawei.com> Cc: Joel Becker <jlbec@evilplan.org> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: reflink: fix slow unlink for refcounted fileJunxiao Bi2014-12-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When running ocfs2 test suite multiple nodes reflink stress test, for a 4 nodes cluster, every unlink() for refcounted file needs about 700s. The slow unlink is caused by the contention of refcount tree lock since all nodes are unlink files using the same refcount tree. When the unlinking file have many extents(over 1600 in our test), most of the extents has refcounted flag set. In ocfs2_commit_truncate(), it will execute the following call trace for every extents. This means it needs get and released refcount tree lock about 1600 times. And when several nodes are do this at the same time, the performance will be very low. ocfs2_remove_btree_range() -- ocfs2_lock_refcount_tree() ---- ocfs2_refcount_lock() ------ __ocfs2_cluster_lock() ocfs2_refcount_lock() is costly, move it to ocfs2_commit_truncate() to do lock/unlock once can improve a lot performance. Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Cc: Wengang <wen.gang.wang@oracle.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'akpm' (patchbomb from Andrew)Linus Torvalds2014-12-10
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge first patchbomb from Andrew Morton: - a few minor cifs fixes - dma-debug upadtes - ocfs2 - slab - about half of MM - procfs - kernel/exit.c - panic.c tweaks - printk upates - lib/ updates - checkpatch updates - fs/binfmt updates - the drivers/rtc tree - nilfs - kmod fixes - more kernel/exit.c - various other misc tweaks and fixes * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (190 commits) exit: pidns: fix/update the comments in zap_pid_ns_processes() exit: pidns: alloc_pid() leaks pid_namespace if child_reaper is exiting exit: exit_notify: re-use "dead" list to autoreap current exit: reparent: call forget_original_parent() under tasklist_lock exit: reparent: avoid find_new_reaper() if no children exit: reparent: introduce find_alive_thread() exit: reparent: introduce find_child_reaper() exit: reparent: document the ->has_child_subreaper checks exit: reparent: s/while_each_thread/for_each_thread/ in find_new_reaper() exit: reparent: fix the cross-namespace PR_SET_CHILD_SUBREAPER reparenting exit: reparent: fix the dead-parent PR_SET_CHILD_SUBREAPER reparenting exit: proc: don't try to flush /proc/tgid/task/tgid exit: release_task: fix the comment about group leader accounting exit: wait: drop tasklist_lock before psig->c* accounting exit: wait: don't use zombie->real_parent exit: wait: cleanup the ptrace_reparented() checks usermodehelper: kill the kmod_thread_locker logic usermodehelper: don't use CLONE_VFORK for ____call_usermodehelper() fs/hfs/catalog.c: fix comparison bug in hfs_cat_keycmp nilfs2: fix the nilfs_iget() vs. nilfs_new_inode() races ...
| * ocfs2: remove unneeded NULL checkDan Carpenter2014-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | In commit 1faf289454b9 ("ocfs2_dlm: disallow a domain join if node maps mismatch") we introduced a new earlier NULL check so this one is not needed. Also static checkers complain because we dereference it first and then check for NULL. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * ocfs2: remove bogus NULL check in ocfs2_move_extents()Dan Carpenter2014-12-10
| | | | | | | | | | | | | | | | | | | | | | "inode" isn't NULL here, and also we dereference it on the previous line so static checkers get annoyed. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * ocfs2: do not set filesystem readonly if link downjiangyiwen2014-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | Do not set the filesystem readonly if the storage link is down. In this case, metadata is not corrupted and only -EIO is returned. And if it is indeed corrupted metadata, it has already called ocfs2_error() in ocfs2_validate_inode_block(). Signed-off-by: Yiwen Jiang <jiangyiwen@huawei.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * ocfs2: do not set OCFS2_LOCK_UPCONVERT_FINISHING if nonblocking lock can not ↵Xue jiufei2014-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | be granted at once ocfs2_readpages() use nonblocking flag to avoid page lock inversion. It will trigger cluster hang because that flag OCFS2_LOCK_UPCONVERT_FINISHING is not cleared if nonblocking lock cannot be granted at once. The flag would prevent dc thread from downconverting. So other nodes cannot acheive this lockres for ever. So we should not set OCFS2_LOCK_UPCONVERT_FINISHING when receiving ast if nonblocking lock had already returned. Signed-off-by: joyce.xue <xuejiufei@huawei.com> Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * ocfs2: fix error handling when creating debugfs root in ocfs2_init()Jan Kara2014-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Error handling if creation of root of debugfs in ocfs2_init() fails is broken. Although error code is set we fail to exit ocfs2_init() with error and thus initialization ends with success. Later when mounting a filesystem, ocfs2 debugfs entries end up being created in the root of debugfs filesystem which is confusing. Fix the error handling to bail out. Coverity id: 1227009. Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * ocfs2: remove filesize checks for sync I/O journal commitGoldwyn Rodrigues2014-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Filesize is not a good indication that the file needs to be synced. An example where this breaks is: 1. Open the file in O_SYNC|O_RDWR 2. Read a small portion of the file (say 64 bytes) 3. Lseek to starting of the file 4. Write 64 bytes If the node crashes, it is not written out to disk because this was not committed in the journal and the other node which reads the file after recovery reads stale data (even if the write on the other node was successful) Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.de> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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