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* ioctl_compat: handle FITRIMMikulas Patocka2015-07-091-1/+0
| | | | | | | | | | | The FITRIM ioctl has the same arguments on 32-bit and 64-bit architectures, so we can add it to the list of compatible ioctls and drop it from compat_ioctl method of various filesystems. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Ted Ts'o <tytso@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-blockLinus Torvalds2015-06-261-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull cgroup writeback support from Jens Axboe: "This is the big pull request for adding cgroup writeback support. This code has been in development for a long time, and it has been simmering in for-next for a good chunk of this cycle too. This is one of those problems that has been talked about for at least half a decade, finally there's a solution and code to go with it. Also see last weeks writeup on LWN: http://lwn.net/Articles/648292/" * 'for-4.2/writeback' of git://git.kernel.dk/linux-block: (85 commits) writeback, blkio: add documentation for cgroup writeback support vfs, writeback: replace FS_CGROUP_WRITEBACK with SB_I_CGROUPWB writeback: do foreign inode detection iff cgroup writeback is enabled v9fs: fix error handling in v9fs_session_init() bdi: fix wrong error return value in cgwb_create() buffer: remove unusued 'ret' variable writeback: disassociate inodes from dying bdi_writebacks writeback: implement foreign cgroup inode bdi_writeback switching writeback: add lockdep annotation to inode_to_wb() writeback: use unlocked_inode_to_wb transaction in inode_congested() writeback: implement unlocked_inode_to_wb transaction and use it for stat updates writeback: implement [locked_]inode_to_wb_and_lock_list() writeback: implement foreign cgroup inode detection writeback: make writeback_control track the inode being written back writeback: relocate wb[_try]_get(), wb_put(), inode_{attach|detach}_wb() mm: vmscan: disable memcg direct reclaim stalling if cgroup writeback support is in use writeback: implement memcg writeback domain based throttling writeback: reset wb_domain->dirty_limit[_tstmp] when memcg domain size changes writeback: implement memcg wb_domain writeback: update wb_over_bg_thresh() to use wb_domain aware operations ...
| * writeback: separate out include/linux/backing-dev-defs.hTejun Heo2015-06-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the planned cgroup writeback support, backing-dev related declarations will be more widely used across block and cgroup; unfortunately, including backing-dev.h from include/linux/blkdev.h makes cyclic include dependency quite likely. This patch separates out backing-dev-defs.h which only has the essential definitions and updates blkdev.h to include it. c files which need access to more backing-dev details now include backing-dev.h directly. This takes backing-dev.h off the common include dependency chain making it a lot easier to use it across block and cgroup. v2: fs/fat build failure fixed. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Jens Axboe <axboe@fb.com>
* | ocfs2: mark local functions as staticJoseph Qi2015-06-252-6/+6
| | | | | | | | | | | | | | | | | | | | Some functions are only used locally, so mark them as static. Signed-off-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: use swap() in ocfs2_double_lock()Fabian Frederick2015-06-251-9/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Use kernel.h macro definition. Thanks to Julia Lawall for Coccinelle scripting support. Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Julia Lawall <julia.lawall@lip6.fr> 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: use swap() in swap_refcount_rec()Fabian Frederick2015-06-251-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Use kernel.h macro definition. Thanks to Julia Lawall for Coccinelle scripting support. Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Julia Lawall <julia.lawall@lip6.fr> 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: use swap() in dx_leaf_sort_swap()Fabian Frederick2015-06-251-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Use kernel.h macro definition. Thanks to Julia Lawall for Coccinelle scripting support. Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Julia Lawall <julia.lawall@lip6.fr> 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 wrong check in ocfs2_direct_IO_get_blocksJoseph Qi2015-06-252-3/+15
| | | | | | | | | | | | | | | | | | | | | | | | contig_blocks gotten from ocfs2_extent_map_get_blocks cannot be compared with clusters_to_alloc. So convert it to clusters first. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Reviewed-by: Weiwei Wang <wangww631@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: fix NULL pointer dereference in function ocfs2_abort_trigger()Xue jiufei2015-06-251-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ocfs2_abort_trigger() use bh->b_assoc_map to get sb. But there's no function to set bh->b_assoc_map in ocfs2, it will trigger NULL pointer dereference while calling this function. We can get sb from bh->b_bdev->bd_super instead of b_assoc_map. [akpm@linux-foundation.org: update comment, per Joseph] Signed-off-by: joyce.xue <xuejiufei@huawei.com> Cc: 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: o2net: should remove debugfs in o2net_init() out branchalex chen2015-06-251-1/+1
| | | | | | | | | | | | | | | | | | Signed-off-by: Alex Chen <alex.chen@huawei.com> 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 OCFS2_IOCB_SEM lock type in direct ioWeiWei Wang2015-06-253-37/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In ocfs2 direct read/write, OCFS2_IOCB_SEM lock type is used to protect inode->i_alloc_sem rw semaphore lock in the earlier kernel version. However, in the latest kernel, inode->i_alloc_sem rw semaphore lock is not used at all, so OCFS2_IOCB_SEM lock type needs to be removed. Signed-off-by: Weiwei Wang <wangww631@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ocfs2: do not BUG if jbd2_journal_dirty_metadata failsJoseph Qi2015-06-251-1/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | jbd2_journal_dirty_metadata may fail. Currently it cannot take care of non zero return value and just BUG in ocfs2_journal_dirty. This patch is aborting the handle and journal instead of BUG. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: joyce.xue <xuejiufei@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ocfs2: remove BUG_ON(!empty_extent) in __ocfs2_rotate_tree_left()Xue jiufei2015-06-251-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ocfs2_rotate_tree_left() calls __ocfs2_rotate_tree_left() for left rotation while non-rightmost path containing an empty extent in the leaf block. __ocfs2_rotate_tree_left() returns -EAGAIN if right subtree having an empty extent and pass the empty_extent_path to caller. The caller ocfs2_rotate_tree_left() will restart rotation from the returned path. It will trigger the BUG_ON(!ocfs2_is_empty_extent) when the et on disk is as follows: eb0 is the leaf block of path(say path_a) passed to ocfs2_rotate_tree_left, which has an empty rec[0]. eb1 is the leaf block of path(say path_b) that just right to path_a, which has no empty record. eb2 is the leaf block of path(say path_c) that just right to path_b, which has an empty rec[0]. And path_c is also the rightmost path. Now we want to remove the empty rec[0] in eb0: ocfs2_rotate_tree_left: -> call __ocfs2_rotate_tree_left with path_a as its input *path* -> call ocfs2_rotate_subtree_left with path_a as its input *left_path* and path_b as its input *right_path*. it will move rec[0] in eb1 to eb0, and rec[0] in eb0 is not empty now. -> continue to call ocfs2_rotate_subtree_left with path_b as its input *left_path* and path_c as its input *right_path*, and return -EAGAIN because eb2 has an empty rec[0] -> call __ocfs2_rotate_tree_left with path_c as it input, rotate all records in eb2 to left and return 0. -> call __ocfs2_rotate_tree_left with path_a as its input, and triggers the BUG_ON(!ocfs2_is_empty_extent) as the rec[0] in eb0 is not empty. So the BUG_ON() should be removed and return 0 if rec[0] is no longer an empty extent. Signed-off-by: joyce.xue <xuejiufei@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: return error when ocfs2_figure_merge_contig_type() failsXue jiufei2015-06-251-10/+24
| | | | | | | | | | | | | | | | | | | | | | | | ocfs2_figure_merge_contig_type() still returns CONTIG_NONE when some error occurs which will cause an unpredictable error. So return a proper errno when ocfs2_figure_merge_contig_type() fails. Signed-off-by: joyce.xue <xuejiufei@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/dlm: cleanup unused function __dlm_wait_on_lockres_flags_setJoseph Qi2015-06-251-1/+0
| | | | | | | | | | | | | | | | | | | | | | __dlm_wait_on_lockres_flags_set() is declared but not implemented and used. So remove it. Signed-off-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: use retval instead of status for checking errorDaeseok Youn2015-06-251-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The use of 'status' in __ocfs2_add_entry() can return wrong value. Some functions' return value in __ocfs2_add_entry(), i.e ocfs2_journal_access_di() is saved to 'status'. But 'status' is not used in 'bail' label for returning result of __ocfs2_add_entry(). So use retval instead of status. Signed-off-by: Daeseok Youn <daeseok.youn@gmail.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: fix a tiny race when truncate dio orohaned entryJoseph Qi2015-06-254-46/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | Once dio crashed it will leave an entry in orphan dir. And orphan scan will take care of the clean up. There is a tiny race case that the same entry will be truncated twice and then trigger the BUG in ocfs2_del_inode_from_orphan. Signed-off-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 __mlog_cpu_guessAndrew Morton2015-06-251-16/+3
| | | | | | | | | | | | | | | | | | | | | | | | raw_smp_processor_id() is the means of avoiding the runtime preemptibility check. [akpm@linux-foundation.org: fix printk warning] Cc: Joe Perches <joe@perches.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: reduce object size of mlog usesJoe Perches2015-06-252-30/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using a function for __mlog_printk instead of a macro reduces the object size of built-in.o by about 190KB, or ~18% overall (x86-64 defconfig with all ocfs2 options) $ size fs/ocfs2/built-in.o* text data bss dec hex filename 870954 118471 134408 1123833 1125f9 fs/ocfs2/built-in.o,new 1064081 118071 134408 1316560 1416d0 fs/ocfs2/built-in.o.old Miscellanea: - Move the used-once __mlog_cpu_guess statement expression macro to the masklog.c file above the use in __mlog_printk function - Simplify the mlog macro moving the and/or logic and level code into __mlog_printk [akpm@linux-foundation.org: export __mlog_printk() to other ocfs2 modules] Signed-off-by: Joe Perches <joe@perches.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: fix race between purge and get lock resourceJunxiao Bi2015-05-061-0/+13
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a race window in dlm_get_lock_resource(), which may return a lock resource which has been purged. This will cause the process to hang forever in dlmlock() as the ast msg can't be handled due to its lock resource not existing. dlm_get_lock_resource { ... spin_lock(&dlm->spinlock); tmpres = __dlm_lookup_lockres_full(dlm, lockid, namelen, hash); if (tmpres) { spin_unlock(&dlm->spinlock); >>>>>>>> race window, dlm_run_purge_list() may run and purge the lock resource spin_lock(&tmpres->spinlock); ... spin_unlock(&tmpres->spinlock); } } Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2015-04-279-39/+39
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull fourth vfs update from Al Viro: "d_inode() annotations from David Howells (sat in for-next since before the beginning of merge window) + four assorted fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: RCU pathwalk breakage when running into a symlink overmounting something fix I_DIO_WAKEUP definition direct-io: only inc/dec inode->i_dio_count for file systems fs/9p: fix readdir() VFS: assorted d_backing_inode() annotations VFS: fs/inode.c helpers: d_inode() annotations VFS: fs/cachefiles: d_backing_inode() annotations VFS: fs library helpers: d_inode() annotations VFS: assorted weird filesystems: d_inode() annotations VFS: normal filesystems (and lustre): d_inode() annotations VFS: security/: d_inode() annotations VFS: security/: d_backing_inode() annotations VFS: net/: d_inode() annotations VFS: net/unix: d_backing_inode() annotations VFS: kernel/: d_inode() annotations VFS: audit: d_backing_inode() annotations VFS: Fix up some ->d_inode accesses in the chelsio driver VFS: Cachefiles should perform fs modifications on the top layer only VFS: AF_UNIX sockets should call mknod on the top layer only
| * VFS: normal filesystems (and lustre): d_inode() annotationsDavid Howells2015-04-159-39/+39
| | | | | | | | | | | | | | that's the bulk of filesystem drivers dealing with inodes of their own Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Revert "ocfs2: incorrect check for debugfs returns"Linus Torvalds2015-04-213-37/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit e2ac55b6a8e337fac7cc59c6f452caac92ab5ee6. Huang Ying reports that this causes a hang at boot with debugfs disabled. It is true that the debugfs error checks are kind of confusing, and this code certainly merits more cleanup and thinking about it, but there's something wrong with the trivial "check not just for NULL, but for error pointers too" patch. Yes, with debugfs disabled, we will end up setting the o2hb_debug_dir pointer variable to an error pointer (-ENODEV), and then continue as if everything was fine. But since debugfs is disabled, all the _users_ of that pointer end up being compiled away, so even though the pointer can not be dereferenced, that's still fine. So it's confusing and somewhat questionable, but the "more correct" error checks end up causing more trouble than they fix. Reported-by: Huang Ying <ying.huang@intel.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Chengyu Song <csong84@gatech.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2015-04-172-103/+43
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull third hunk of vfs changes from Al Viro: "This contains the ->direct_IO() changes from Omar + saner generic_write_checks() + dealing with fcntl()/{read,write}() races (mirroring O_APPEND/O_DIRECT into iocb->ki_flags and instead of repeatedly looking at ->f_flags, which can be changed by fcntl(2), check ->ki_flags - which cannot) + infrastructure bits for dhowells' d_inode annotations + Christophs switch of /dev/loop to vfs_iter_write()" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (30 commits) block: loop: switch to VFS ITER_BVEC configfs: Fix inconsistent use of file_inode() vs file->f_path.dentry->d_inode VFS: Make pathwalk use d_is_reg() rather than S_ISREG() VFS: Fix up debugfs to use d_is_dir() in place of S_ISDIR() VFS: Combine inode checks with d_is_negative() and d_is_positive() in pathwalk NFS: Don't use d_inode as a variable name VFS: Impose ordering on accesses of d_inode and d_flags VFS: Add owner-filesystem positive/negative dentry checks nfs: generic_write_checks() shouldn't be done on swapout... ocfs2: use __generic_file_write_iter() mirror O_APPEND and O_DIRECT into iocb->ki_flags switch generic_write_checks() to iocb and iter ocfs2: move generic_write_checks() before the alignment checks ocfs2_file_write_iter: stop messing with ppos udf_file_write_iter: reorder and simplify fuse: ->direct_IO() doesn't need generic_write_checks() ext4_file_write_iter: move generic_write_checks() up xfs_file_aio_write_checks: switch to iocb/iov_iter generic_write_checks(): drop isblk argument blkdev_write_iter: expand generic_file_checks() call in there ...
| * ocfs2: use __generic_file_write_iter()Al Viro2015-04-121-57/+7
| | | | | | | | | | | | | | we can do that now - all we need is to clear IOCB_DIRECT from ->ki_flags in "can't do dio" case. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * mirror O_APPEND and O_DIRECT into iocb->ki_flagsAl Viro2015-04-121-5/+5
| | | | | | | | | | | | ... avoiding write_iter/fcntl races. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * switch generic_write_checks() to iocb and iterAl Viro2015-04-121-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | ... returning -E... upon error and amount of data left in iter after (possible) truncation upon success. Note, that normal case gives a non-zero (positive) return value, so any tests for != 0 _must_ be updated. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Conflicts: fs/ext4/file.c
| * ocfs2: move generic_write_checks() before the alignment checksAl Viro2015-04-121-24/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | Alignment checks for dio depend upon the range truncation done by generic_write_checks(). They can be done as soon as we got ocfs2_rw_lock() and that actually makes ocfs2_prepare_inode_for_write() simpler. The only thing to watch out for is restoring the original count in "unlock and redo without dio" case. Position doesn't need to be restored, since we change it only in O_APPEND case and in that case it will be reassigned anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * ocfs2_file_write_iter: stop messing with pposAl Viro2015-04-121-12/+12
| | | | | | | | | | | | it's &iocb->ki_pos; no need to obfuscate. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * Merge branch 'for-linus' into for-nextAl Viro2015-04-121-6/+11
| |\
| * | generic_write_checks(): drop isblk argumentAl Viro2015-04-121-2/+1
| | | | | | | | | | | | | | | | | | all remaining callers are passing 0; some just obscure that fact. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | direct_IO: remove rw from a_ops->direct_IO()Omar Sandoval2015-04-121-3/+1
| | | | | | | | | | | | | | | | | | | | | Now that no one is using rw, remove it completely. Signed-off-by: Omar Sandoval <osandov@osandov.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | direct_IO: use iov_iter_rw() instead of rw everywhereOmar Sandoval2015-04-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rw parameter to direct_IO is redundant with iov_iter->type, and treated slightly differently just about everywhere it's used: some users do rw & WRITE, and others do rw == WRITE where they should be doing a bitwise check. Simplify this with the new iov_iter_rw() helper, which always returns either READ or WRITE. Signed-off-by: Omar Sandoval <osandov@osandov.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | Remove rw from {,__,do_}blockdev_direct_IO()Omar Sandoval2015-04-121-9/+7
| | | | | | | | | | | | | | | | | | | | | | | | Most filesystems call through to these at some point, so we'll start here. Signed-off-by: Omar Sandoval <osandov@osandov.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | Merge branch 'for-linus-2' of ↵Linus Torvalds2015-04-151-4/+0
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull second vfs update from Al Viro: "Now that net-next went in... Here's the next big chunk - killing ->aio_read() and ->aio_write(). There'll be one more pile today (direct_IO changes and generic_write_checks() cleanups/fixes), but I'd prefer to keep that one separate" * 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (37 commits) ->aio_read and ->aio_write removed pcm: another weird API abuse infinibad: weird APIs switched to ->write_iter() kill do_sync_read/do_sync_write fuse: use iov_iter_get_pages() for non-splice path fuse: switch to ->read_iter/->write_iter switch drivers/char/mem.c to ->read_iter/->write_iter make new_sync_{read,write}() static coredump: accept any write method switch /dev/loop to vfs_iter_write() serial2002: switch to __vfs_read/__vfs_write ashmem: use __vfs_read() export __vfs_read() autofs: switch to __vfs_write() new helper: __vfs_write() switch hugetlbfs to ->read_iter() coda: switch to ->read_iter/->write_iter ncpfs: switch to ->read_iter/->write_iter net/9p: remove (now-)unused helpers p9_client_attach(): set fid->uid correctly ...
| * | make new_sync_{read,write}() staticAl Viro2015-04-121-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | All places outside of core VFS that checked ->read and ->write for being NULL or called the methods directly are gone now, so NULL {read,write} with non-NULL {read,write}_iter will do the right thing in all cases. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2015-04-1517-100/+260
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge first patchbomb from Andrew Morton: - arch/sh updates - ocfs2 updates - kernel/watchdog feature - about half of mm/ * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (122 commits) Documentation: update arch list in the 'memtest' entry Kconfig: memtest: update number of test patterns up to 17 arm: add support for memtest arm64: add support for memtest memtest: use phys_addr_t for physical addresses mm: move memtest under mm mm, hugetlb: abort __get_user_pages if current has been oom killed mm, mempool: do not allow atomic resizing memcg: print cgroup information when system panics due to panic_on_oom mm: numa: remove migrate_ratelimited mm: fold arch_randomize_brk into ARCH_HAS_ELF_RANDOMIZE mm: split ET_DYN ASLR from mmap ASLR s390: redefine randomize_et_dyn for ELF_ET_DYN_BASE mm: expose arch_mmap_rnd when available s390: standardize mmap_rnd() usage powerpc: standardize mmap_rnd() usage mips: extract logic for mmap_rnd() arm64: standardize mmap_rnd() usage x86: standardize mmap_rnd() usage arm: factor out mmap ASLR into mmap_rnd ...
| * | | cleancache: zap uuid arg of cleancache_init_shared_fsVladimir Davydov2015-04-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use super_block->s_uuid instead. Every shared filesystem using cleancache must now initialize super_block->s_uuid before calling cleancache_init_shared_fs. The only one on the tree, ocfs2, already meets this requirement. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Stefan Hengelein <ilendir@googlemail.com> Cc: Florian Schmaus <fschmaus@gmail.com> Cc: Andor Daam <andor.daam@googlemail.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: Bob Liu <lliubbo@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | ocfs2: copy fs uuid to superblockVladimir Davydov2015-04-151-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, maximal number of cleancache enabled filesystems equals 32, which is insufficient nowadays, because a Linux host can have hundreds of containers on board, each of which might want its own filesystem. This patch set targets at removing this limitation - see patch 4 for more details. Patches 1-3 prepare the code for this change. This patch (of 4): This will allow us to remove the uuid argument from cleancache_init_shared_fs. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Stefan Hengelein <ilendir@googlemail.com> Cc: Florian Schmaus <fschmaus@gmail.com> Cc: Andor Daam <andor.daam@googlemail.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: Bob Liu <lliubbo@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | ocfs2: make mlog_errno return the errnoAndrew Morton2015-04-151-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ocfs2 does mlog_errno(v); return v; in many places. Change mlog_errno() so we can do return mlog_errno(v); For some weird reason this patch reduces the size of ocfs2 by 6k: akpm3:/usr/src/25> size fs/ocfs2/ocfs2.ko text data bss dec hex filename 1146613 82767 832192 2061572 1f7504 fs/ocfs2/ocfs2.ko-before 1140857 82767 832192 2055816 1f5e88 fs/ocfs2/ocfs2.ko-after [dan.carpenter@oracle.com: double evaluation concerns in mlog_errno()] Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: alex chen <alex.chen@huawei.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | ocfs2: check if the ocfs2 lock resource has been initialized before calling ↵alex chen2015-04-151-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ocfs2_dlm_lock If ocfs2 lockres has not been initialized before calling ocfs2_dlm_lock, the lock won't be dropped and then will lead umount hung. The case is described below: ocfs2_mknod ocfs2_mknod_locked __ocfs2_mknod_locked ocfs2_journal_access_di Failed because of -ENOMEM or other reasons, the inode lockres has not been initialized yet. iput(inode) ocfs2_evict_inode ocfs2_delete_inode ocfs2_inode_lock ocfs2_inode_lock_full_nested __ocfs2_cluster_lock Succeeds and allocates a new dlm lockres. ocfs2_clear_inode ocfs2_open_unlock ocfs2_drop_inode_locks ocfs2_drop_lock Since lockres has not been initialized, the lock can't be dropped and the lockres can't be migrated, thus umount will hang forever. Signed-off-by: Alex Chen <alex.chen@huawei.com> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Reviewed-by: joyce.xue <xuejiufei@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: logging: remove static buffer, use vsprintf extension %pVJoe Perches2015-04-151-15/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the vsprintf %pV extension to avoid using a static buffer and remove the now unnecessary buffer. Signed-off-by: Joe Perches <joe@perches.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: incorrect check for debugfs returnsChengyu Song2015-04-153-16/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | debugfs_create_dir and debugfs_create_file may return -ENODEV when debugfs is not configured, so the return value should be checked against ERROR_VALUE as well, otherwise the later dereference of the dentry pointer would crash the kernel. This patch tries to solve this problem by fixing certain checks. However, I have that found other call sites are protected by #ifdef CONFIG_DEBUG_FS. In current implementation, if CONFIG_DEBUG_FS is defined, then the above two functions will never return any ERROR_VALUE. So another possibility to fix this is to surround all the buggy checks/functions with the same #ifdef CONFIG_DEBUG_FS. But I'm not sure if this would break any functionality, as only OCFS2_FS_STATS declares dependency on DEBUG_FS. Signed-off-by: Chengyu Song <csong84@gatech.edu> 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 a typo in the copyright statementJakub Wilk2015-04-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jakub Wilk <jwilk@jwilk.net> Reviewed-by: Eric Ren <zren@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | ocfs2: fix possible uninitialized variable accessJoseph Qi2015-04-153-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In ocfs2_local_alloc_find_clear_bits and ocfs2_get_dentry, variable numfound and set may be uninitialized and then used in tracepoint. In ocfs2_xattr_block_get and ocfs2_delete_xattr_in_bucket, variable block_off and xv may be uninitialized and then used in the following logic due to unchecked return value. This patch fixes these possible issues. Signed-off-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 goto statement in ocfs2_check_dir_for_entry()Daeseok Youn2015-04-151-8/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com> 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: rollback the cleared bits if error occurs after ↵Joseph Qi2015-04-151-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ocfs2_block_group_clear_bits ocfs2_block_group_clear_bits will clear bits in block group bitmap. Once it succeeds but fails in the following step, it will cause block group bitmap mismatch the corresponding count recorded in dinode. So rollback the cleared bits if error occurs. Signed-off-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: use ENOENT instead of EEXIST when get system file failsJoseph Qi2015-04-152-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When ocfs2_get_system_file_inode fails, it is obscure to set the return value to -EEXIST. So change it to -ENOENT. Signed-off-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: use actual name length when find entry in ocfs2_orphan_del()Joseph Qi2015-04-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the namelen is 20 and name only has actual length 16, it will fail in ocfs2_find_entry because of mismatch. So use actual name length when find entry. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Signed-off-by: Yiwen Jiang <jiangyiwen@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: dereferencing freed pointers in ocfs2_reflink()Dan Carpenter2015-04-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code at the "out" label assumes that "default_acl" and "acl" are NULL, but actually the pointers can be NULL, unitialized, or freed. Signed-off-by: Dan Carpenter <dan.carpenter@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>
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