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| * | | Btrfs: barrier before waitqueue_activeJosef Bacik2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need a barrir before calling waitqueue_active otherwise we will miss wakeups. So in places that do atomic_dec(); then atomic_read() use atomic_dec_return() which imply a memory barrier (see memory-barriers.txt) and then add an explicit memory barrier everywhere else that need them. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
| * | | Btrfs: fix deadlock in wait_for_more_refsArne Jansen2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a168650c introduced a waiting mechanism to prevent busy waiting in btrfs_run_delayed_refs. This can deadlock with btrfs_run_ordered_operations, where a tree_mod_seq is held while waiting for the io to complete, while the end_io calls btrfs_run_delayed_refs. This whole mechanism is unnecessary. If not enough runnable refs are available to satisfy count, just return as count is more like a guideline than a strict requirement. In case we have to run all refs, commit transaction makes sure that no other threads are working in the transaction anymore, so we just assert here that no refs are blocked. Signed-off-by: Arne Jansen <sensille@gmx.net> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * | | btrfs: fix second lock in btrfs_delete_delayed_items()Fengguang Wu2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a real bug caught by coccinelle. fs/btrfs/delayed-inode.c:1013:1-11: second lock on line 1013 Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
| * | | Btrfs: don't allocate a seperate csums array for direct readsJosef Bacik2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We've been allocating a big array for csums instead of storing them in the io_tree like we do for buffered reads because previously we were locking the entire range, so we didn't have an extent state for each sector of the range. But now that we do the range locking as we map the buffers we can limit the mapping lenght to sectorsize and use the private part of the io_tree for our csums. This allows us to avoid an extra memory allocation for direct reads which could incur latency. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
| * | | Btrfs: do not strdup non existent stringsJosef Bacik2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we close devices we add back empty devices for some reason that escapes me. In the case of a missing dev we don't allocate an rcu_string for it's name, so check to see if the device has a name and if it doesn't don't bother strdup()'ing it. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
| * | | Btrfs: do not use missing devices when showing devnameJosef Bacik2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If you do the following mkfs.btrfs /dev/sdb /dev/sdc rmmod btrfs dd if=/dev/zero of=/dev/sdb bs=1M count=1 mount -o degraded /dev/sdc /mnt/btrfs-test the box will panic trying to deref the name for the missing dev since it is the lower numbered devid. So fix show_devname to not use missing devices. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
| * | | Btrfs: fix that error value is changed by mistakeStefan Behrens2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In iterate_inodes_from_logical() the error result from extent_from_logical() is patched by mistake. Typically ENOENT is patched to EINVAL because (-ENOENT & BTRFS_EXTENT_FLAG_TREE_BLOCK) evaluates to true. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
| * | | Btrfs: lock extents as we map them in DIOJosef Bacik2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A deadlock in xfstests 113 was uncovered by commit d187663ef24cd3d033f0cbf2867e70b36a3a90b8 This is because we would not return EIOCBQUEUED for short AIO reads, instead we'd wait for the DIO to complete and then return the amount of data we transferred, which would allow our stuff to unlock the remaning amount. But with this change this no longer happens, so if we have a short AIO read (for example if we try to read past EOF), we could leave the section from EOF to the end of where we tried to read locked. Fixing this is tricky since there is no clear way to know exactly how much data DIO truly submitted for IO, so to make this less hard on ourselves and less combersome we need to lock the extents as we try to map them, and then we unlock any areas we didn't actually map. This makes us completely safe from deadlocks and reliance on a particular behavior of the DIO code. This also lays the groundwork for allowing us to use the normal csum storage method for reads which means we can remove an allocation. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
| * | | Btrfs: fix some endian bugs handling the root timesDan Carpenter2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | "trans->transid" is cpu endian but we want to store the data as little endian. "item->ctime.nsec" is only 32 bits, not 64. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
| * | | Btrfs: unlock on error in btrfs_delalloc_reserve_metadata()Dan Carpenter2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | We should release this mutex before returning the error code. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
| * | | Btrfs: checking for NULL instead of IS_ERRDan Carpenter2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | add_qgroup_rb() never returns NULL, only error pointers. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
| * | | Btrfs: fix some error codes in btrfs_qgroup_inherit()Dan Carpenter2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | These are returning zero when it should be returning a negative error code. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
| * | | Btrfs: fix a misplaced address operator in a conditionStefan Behrens2012-08-28
| | | | | | | | | | | | | | | | | | | | | | | | This should obviously not be "if (&flag)" but "if (flag)". Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
* | | | Merge branch 'for-linus-3.6' of ↵Linus Torvalds2012-08-12
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs merge fix from Chris Mason: "This fixes a merge error in rc1. The calls to mnt_want_write should have been removed." * 'for-linus-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: remove mnt_want_write call in btrfs_mksubvol
| * | | | Btrfs: remove mnt_want_write call in btrfs_mksubvolAlexander Block2012-08-09
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We got a recursive lock in mksubvol because the caller already held a lock. I think we got into this due to a merge error. Commit a874a63 removed the mnt_want_write call from btrfs_mksubvol and added a replacement call to mnt_want_write_file in btrfs_ioctl_snap_create_transid. Commit e7848683 however tried to move all calls to mnt_want_write above i_mutex. So somewhere while merging this, it got mixed up. The solution is to remove the mnt_want_write call completely from mksubvol. Reported-by: David Sterba <dave@jikos.cz> Signed-off-by: Alexander Block <ablock84@googlemail.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* | | | btrfs: nuke pdflush from commentsArtem Bityutskiy2012-08-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pdflush thread is long gone, so this patch removes references to pdflush from btrfs comments. Cc: Chris Mason <chris.mason@fusionio.com> Cc: linux-btrfs@vger.kernel.org Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | btrfs: nuke write_super from commentsArtem Bityutskiy2012-08-04
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | The '->write_super' superblock method is gone, and this patch removes all the references to 'write_super' from btrfs. Cc: Chris Mason <chris.mason@fusionio.com> Cc: linux-btrfs@vger.kernel.org Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2012-08-01
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull second vfs pile from Al Viro: "The stuff in there: fsfreeze deadlock fixes by Jan (essentially, the deadlock reproduced by xfstests 068), symlink and hardlink restriction patches, plus assorted cleanups and fixes. Note that another fsfreeze deadlock (emergency thaw one) is *not* dealt with - the series by Fernando conflicts a lot with Jan's, breaks userland ABI (FIFREEZE semantics gets changed) and trades the deadlock for massive vfsmount leak; this is going to be handled next cycle. There probably will be another pull request, but that stuff won't be in it." Fix up trivial conflicts due to unrelated changes next to each other in drivers/{staging/gdm72xx/usb_boot.c, usb/gadget/storage_common.c} * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (54 commits) delousing target_core_file a bit Documentation: Correct s_umount state for freeze_fs/unfreeze_fs fs: Remove old freezing mechanism ext2: Implement freezing btrfs: Convert to new freezing mechanism nilfs2: Convert to new freezing mechanism ntfs: Convert to new freezing mechanism fuse: Convert to new freezing mechanism gfs2: Convert to new freezing mechanism ocfs2: Convert to new freezing mechanism xfs: Convert to new freezing code ext4: Convert to new freezing mechanism fs: Protect write paths by sb_start_write - sb_end_write fs: Skip atime update on frozen filesystem fs: Add freezing handling to mnt_want_write() / mnt_drop_write() fs: Improve filesystem freezing handling switch the protection of percpu_counter list to spinlock nfsd: Push mnt_want_write() outside of i_mutex btrfs: Push mnt_want_write() outside of i_mutex fat: Push mnt_want_write() outside of i_mutex ...
| * | | btrfs: Convert to new freezing mechanismJan Kara2012-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We convert btrfs_file_aio_write() to use new freeze check. We also add proper freeze protection to btrfs_page_mkwrite(). We also add freeze protection to the transaction mechanism to avoid starting transactions on frozen filesystem. At minimum this is necessary to stop iput() of unlinked file to change frozen filesystem during truncation. Checks in cleaner_kthread() and transaction_kthread() can be safely removed since btrfs_freeze() will lock the mutexes and thus block the threads (and they shouldn't have anything to do anyway). CC: linux-btrfs@vger.kernel.org CC: Chris Mason <chris.mason@oracle.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | btrfs: Push mnt_want_write() outside of i_mutexJan Kara2012-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When mnt_want_write() starts to handle freezing it will get a full lock semantics requiring proper lock ordering. So push mnt_want_write() call consistently outside of i_mutex. CC: Chris Mason <chris.mason@oracle.com> CC: linux-btrfs@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | btrfs: use printk_get_level and printk_skip_level, add __printf, fix falloutJoe Perches2012-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the generic printk_get_level() to search a message for a kern_level. Add __printf to verify format and arguments. Fix a few messages that had mismatches in format and arguments. Add #ifdef CONFIG_PRINTK blocks to shrink the object size a bit when not using printk. [akpm@linux-foundation.org: whitespace tweak] Signed-off-by: Joe Perches <joe@perches.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Chris Mason <chris.mason@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Btrfs: using vmalloc and friends needs vmalloc.hStephen Rothwell2012-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On powerpc, we don't get the implicit vmalloc.h include, and as a result the build fails noisily: fs/btrfs/send.c: In function 'fs_path_free': fs/btrfs/send.c:185:4: error: implicit declaration of function 'vfree' [-Werror=implicit-function-declaration] fs/btrfs/send.c: In function 'fs_path_ensure_buf': fs/btrfs/send.c:215:4: error: implicit declaration of function 'vmalloc' [-Werror=implicit-function-declaration] fs/btrfs/send.c:215:12: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:225:12: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:233:13: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c: In function 'iterate_dir_item': fs/btrfs/send.c:900:10: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:909:11: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c: In function 'btrfs_ioctl_send': fs/btrfs/send.c:4463:17: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:4469:17: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:4475:2: error: implicit declaration of function 'vzalloc' [-Werror=implicit-function-declaration] fs/btrfs/send.c:4475:20: warning: assignment makes pointer from integer without a cast [enabled by default] fs/btrfs/send.c:4483:21: warning: assignment makes pointer from integer without a cast [enabled by default] Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2012-07-26
|\ \ \ \ | | |/ / | |/| / | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull large btrfs update from Chris Mason: "This pull request is very large, and the two main features in here have been under testing/devel for quite a while. We have subvolume quotas from the strato developers. This enables full tracking of how many blocks are allocated to each subvolume (and all snapshots) and you can set limits on a per-subvolume basis. You can also create quota groups and toss multiple subvolumes into a big group. It's everything you need to be a web hosting company and give each user their own subvolume. The userland side of the quotas is being refreshed, they'll send out details on where to grab it soon. Next is the kernel side of btrfs send/receive from Alexander Block. This leverages the same infrastructure as the quota code to figure out relationships between blocks and their owners. It can then compute the difference between two snapshots and sends the diffs in a neutral format into userland. The basic model: create a snapshot send that snapshot as the initial backup make changes create a second snapshot send the incremental as a backup delete the first snapshot (use the second snapshot for the next incremental) The receive portion is all in userland, and in the 'next' branch of my btrfs-progs repo. There's still some work to do in terms of optimizing the send side from kernel to userland. The really important part is figuring out how two snapshots are different, and this is where we are concentrating right now. The initial send of a dataset is a little slower than tar, but the incremental sends are dramatically faster than what rsync can do. On top of all of that, we have a nice queue of fixes, cleanups and optimizations." Fix up trivial modify/del conflict in fs/btrfs/ioctl.c Also fix up semantic conflict in fs/btrfs/send.c: the interface to dentry_open() changed in commit 765927b2d508 ("switch dentry_open() to struct path, make it grab references itself"), and since it now grabs whatever references it needs, we should no longer do the mntget() on the mnt (and we need to dput() the dentry reference we took). * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (65 commits) Btrfs: uninit variable fixes in send/receive Btrfs: introduce BTRFS_IOC_SEND for btrfs send/receive Btrfs: add btrfs_compare_trees function Btrfs: introduce subvol uuids and times Btrfs: make iref_to_path non static Btrfs: add a barrier before a waitqueue_active check Btrfs: call the ordered free operation without any locks held Btrfs: Check INCOMPAT flags on remount and add helper function Btrfs: add helper for tree enumeration btrfs: allow cross-subvolume file clone Btrfs: improve multi-thread buffer read Btrfs: make btrfs's allocation smoothly with preallocation Btrfs: lock the transition from dirty to writeback for an eb Btrfs: fix potential race in extent buffer freeing Btrfs: don't return true in releasepage unless we actually freed the eb Btrfs: suppress printk() if all device I/O stats are zero Btrfs: remove unwanted printk() for btrfs device I/O stats Btrfs: rewrite BTRFS_SETGET_FUNCS Btrfs: zero unused bytes in inode item Btrfs: kill free_space pointer from inode structure ... Conflicts: fs/btrfs/ioctl.c
| * | Btrfs: uninit variable fixes in send/receiveChris Mason2012-07-25
| | | | | | | | | | | | Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * | Merge branch 'send-v2' of git://github.com/ablock84/linux-btrfs into for-linusChris Mason2012-07-25
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the kernel portion of btrfs send/receive Conflicts: fs/btrfs/Makefile fs/btrfs/backref.h fs/btrfs/ctree.c fs/btrfs/ioctl.c fs/btrfs/ioctl.h Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| | * | Btrfs: introduce BTRFS_IOC_SEND for btrfs send/receiveAlexander Block2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces the BTRFS_IOC_SEND ioctl that is required for send. It allows btrfs-progs to implement full and incremental sends. Patches for btrfs-progs will follow. Signed-off-by: Alexander Block <ablock84@googlemail.com> Reviewed-by: David Sterba <dave@jikos.cz> Reviewed-by: Arne Jansen <sensille@gmx.net> Reviewed-by: Jan Schmidt <list.btrfs@jan-o-sch.net> Reviewed-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
| | * | Btrfs: add btrfs_compare_trees functionAlexander Block2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function is used to find the differences between two trees. The tree compare skips whole subtrees if it detects shared tree blocks and thus is pretty fast. Signed-off-by: Alexander Block <ablock84@googlemail.com> Reviewed-by: David Sterba <dave@jikos.cz> Reviewed-by: Arne Jansen <sensille@gmx.net> Reviewed-by: Jan Schmidt <list.btrfs@jan-o-sch.net> Reviewed-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
| | * | Btrfs: introduce subvol uuids and timesAlexander Block2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces uuids for subvolumes. Each subvolume has it's own uuid. In case it was snapshotted, it also contains parent_uuid. In case it was received, it also contains received_uuid. It also introduces subvolume ctime/otime/stime/rtime. The first two are comparable to the times found in inodes. otime is the origin/creation time and ctime is the change time. stime/rtime are only valid on received subvolumes. stime is the time of the subvolume when it was sent. rtime is the time of the subvolume when it was received. Additionally to the times, we have a transid for each time. They are updated at the same place as the times. btrfs receive uses stransid and rtransid to find out if a received subvolume changed in the meantime. If an older kernel mounts a filesystem with the extented fields, all fields become invalid. The next mount with a new kernel will detect this and reset the fields. Signed-off-by: Alexander Block <ablock84@googlemail.com> Reviewed-by: David Sterba <dave@jikos.cz> Reviewed-by: Arne Jansen <sensille@gmx.net> Reviewed-by: Jan Schmidt <list.btrfs@jan-o-sch.net> Reviewed-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
| | * | Btrfs: make iref_to_path non staticAlexander Block2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Make iref_to_path non static (needed in send) and rename it to btrfs_iref_to_path Signed-off-by: Alexander Block <ablock84@googlemail.com>
| | * | Btrfs: add helper for tree enumerationArne Jansen2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Often no exact match is wanted but just the next lower or higher item. There's a lot of duplicated code throughout btrfs to deal with the corner cases. This patch adds a helper function that can facilitate searching. Signed-off-by: Arne Jansen <sensille@gmx.net>
| | * | btrfs: allow cross-subvolume file cloneDavid Sterba2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Lift the EXDEV condition and allow different root trees for files being cloned, then pass source inode's root when searching for extents. Cloning is not allowed to cross vfsmounts, ie. when two subvolumes from one filesystem are mounted separately. Signed-off-by: David Sterba <dsterba@suse.cz>
| * | | Btrfs: add a barrier before a waitqueue_active checkChris Mason2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We were missing wakeups on the delayed ref waitqueue due to races on waitqueue_active. Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * | | Btrfs: call the ordered free operation without any locks heldChris Mason2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Each ordered operation has a free callback, and this was called with the worker spinlock held. Josef made the free callback also call iput, which we can't do with the spinlock. This drops the spinlock for the free operation and grabs it again before moving through the rest of the list. We'll circle back around to this and find a cleaner way that doesn't bounce the lock around so much. Signed-off-by: Chris Mason <chris.mason@fusionio.com> cc: stable@kernel.org
| * | | Btrfs: Check INCOMPAT flags on remount and add helper functionMitch Harder2012-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In support of the recently added capability to remount with lzo compression, provide a helper function to check the compression INCOMPAT flags when remounting with lzo compression, and set the flags if necessary. Also, implement the new helper function when defragmenting with explicit lzo compression and when setting the default subvolume. Signed-off-by: Mitch Harder <mitch.harder@sabayonlinux.org> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * | | Merge branch 'qgroup' of git://git.jan-o-sch.net/btrfs-unstable into for-linusChris Mason2012-07-25
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: fs/btrfs/ioctl.c fs/btrfs/ioctl.h fs/btrfs/transaction.c fs/btrfs/transaction.h Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| | * | | Btrfs: add qgroup inheritanceArne Jansen2012-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When creating a subvolume or snapshot, it is necessary to initialize the qgroup account with a copy of some other (tracking) qgroup. This patch adds parameters to the ioctls to pass the information from which qgroup to inherit. Signed-off-by: Arne Jansen <sensille@gmx.net>
| | * | | Btrfs: add qgroup ioctlsArne Jansen2012-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ioctls to control the qgroup feature like adding and removing qgroups and assigning qgroups. Signed-off-by: Arne Jansen <sensille@gmx.net>
| | * | | Btrfs: hooks to reserve qgroup spaceArne Jansen2012-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Like block reserves, reserve a small piece of space on each transaction start and for delalloc. These are the hooks that can actually return EDQUOT to the user. The amount of space reserved is tracked in the transaction handle. Signed-off-by: Arne Jansen <sensille@gmx.net>
| | * | | Btrfs: hooks for qgroup to record delayed refsJan Schmidt2012-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hooks into qgroup code to record refs and into transaction commit. This is the main entry point for qgroup. Basically every change in extent backrefs got accounted to the appropriate qgroups. Signed-off-by: Arne Jansen <sensille@gmx.net> Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
| | * | | Btrfs: quota tree support and startupArne Jansen2012-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Init the quota tree along with the others on open_ctree and close_ctree. Add the quota tree to the list of well known trees in btrfs_read_fs_root_no_name. Signed-off-by: Arne Jansen <sensille@gmx.net>
| | * | | Btrfs: call the qgroup accounting functionsJan Schmidt2012-07-12
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
| | * | | Btrfs: qgroup implementation and prototypesArne Jansen2012-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Arne Jansen <sensille@gmx.net> Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
| | * | | Btrfs: Test code to change the order of delayed-ref processingArne Jansen2012-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Normally delayed refs get processed in ascending bytenr order. This correlates in most cases to the order added. To expose dependencies on this order, we start to process the tree in the middle instead of the beginning. This code is only effective when SCRAMBLE_DELAYED_REFS is defined. Signed-off-by: Arne Jansen <sensille@gmx.net>
| | * | | Btrfs: qgroup state and initializationArne Jansen2012-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add state to fs_info. Signed-off-by: Arne Jansen <sensille@gmx.net>
| | * | | Btrfs: added helper to create new treesArne Jansen2012-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This creates a brand new tree. Will be used to create the quota tree. Signed-off-by: Arne Jansen <sensille@gmx.net>
| | * | | Btrfs: check the root passed to btrfs_end_transactionArne Jansen2012-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch only add a consistancy check to validate that the same root is passed to start_transaction and end_transaction. Subvolume quota depends on this. Signed-off-by: Arne Jansen <sensille@gmx.net>
| | * | | Btrfs: add helper for tree enumerationArne Jansen2012-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Often no exact match is wanted but just the next lower or higher item. There's a lot of duplicated code throughout btrfs to deal with the corner cases. This patch adds a helper function that can facilitate searching. Signed-off-by: Arne Jansen <sensille@gmx.net>
| | * | | Btrfs: qgroup on-disk formatArne Jansen2012-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Not all features are in use by the current version and thus may change in the future. Signed-off-by: Arne Jansen <sensille@gmx.net>
| | * | | Btrfs: join tree mod log code with the code holding back delayed refsJan Schmidt2012-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We've got two mechanisms both required for reliable backref resolving (tree mod log and holding back delayed refs). You cannot make use of one without the other. So instead of requiring the user of this mechanism to setup both correctly, we join them into a single interface. Additionally, we stop inserting non-blockers into fs_info->tree_mod_seq_list as we did before, which was of no value. Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
| | * | | Btrfs: fix buffer leak in btrfs_next_old_leafJan Schmidt2012-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When calling btrfs_next_old_leaf, we were leaking an extent buffer in the rare case of using the deadlock avoidance code needed for the tree mod log. Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-22 10:32:05 -0400