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* Btrfs: handle errors in compression submission pathJosef Bacik2013-02-20
| | | | | | | | | | | | | I noticed we would deadlock if we aborted a transaction while doing compressed io. This is because we don't unlock our pages if something goes horribly wrong. To fix this we need to make sure that we call extent_clear_unlock_delalloc in order to unlock all the pages. If we have to cow in the async submission thread we need to make sure to unlock our locked_page as the cow error path will not unlock the locked page as it depends on the caller to unlock that page. With this patch we no longer deadlock on the page lock when we have an aborted transaction. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: account for orphan inodes properly during cleanupJosef Bacik2013-02-20
| | | | | | | | | | | | | | | Dave sent me a panic where we were doing the orphan cleanup and panic'ed trying to release our reservation from the orphan block rsv. The reason for this is because our orphan block rsv had been free'd out from underneath us because the transaction commit found that there were no orphan inodes according to its count and decided to free it. This is incorrect so make sure we inc the orphan inodes count so the accounting is all done properly. This would also cause the warning in the orphan commit code normally if you had any orphans to cleanup as they would only decrement the orphan count so you'd get a negative orphan count which could cause problems during runtime. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: unreserve space if our ordered extent fails to workJosef Bacik2013-02-20
| | | | | | | | | | | When a transaction aborts or there's an EIO on an ordered extent or any error really we will not free up the space we reserved for this ordered extent. This results in warnings from the block group cache cleanup in the case of a transaction abort, or leaking space in the case of EIO on an ordered extent. Fix this up by free'ing the reserved space if we have an error at all trying to complete an ordered extent. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: use the inode own lock to protect its delalloc_bytesMiao Xie2013-02-20
| | | | | | | | | | We need not use a global lock to protect the delalloc_bytes of the inode, just use its own lock. In this way, we can reduce the lock contention and ->delalloc_lock will just protect delalloc inode list. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: use percpu counter for fs_info->delalloc_bytesMiao Xie2013-02-20
| | | | | | | | | | | | | | fs_info->delalloc_bytes is accessed very frequently, so use percpu counter instead of the u64 variant for it to reduce the lock contention. This patch also fixed the problem that we access the variant without the lock protection.At worst, we would not flush the delalloc inodes, and just return ENOSPC error when we still have some free space in the fs. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: move fs/btrfs/ioctl.h to include/uapi/linux/btrfs.hFilipe Brandenburger2013-02-20
| | | | | | | | | The header file will then be installed under /usr/include/linux so that userspace applications can refer to Btrfs ioctls by name and use the same structs used internally in the kernel. Signed-off-by: Filipe Brandenburger <filbranden@google.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Revert "Btrfs: fix permissions of empty files not affected by umask"Josef Bacik2013-02-20
| | | | | | | | | | This reverts commit 2794ed013b3551cbae887ea1b93c52aaacb7370d. Wasn't supposed to get used in btrfs_mknod, it was supposed to be in btrfs_create, which was done in commit 9185aa587b7425f8f4520da2e66792f5f3c2b815. Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: traverse and flush the delalloc inodes onceMiao Xie2013-02-20
| | | | | | | | | | btrfs_start_delalloc_inodes() needn't traverse and flush the delalloc inodes repeatedly. It is because we can regard the data that the users write after we start delalloc inodes flush as the one which is after the delalloc inodes flush is done, and we can flush it next time. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: use token to avoid times mapping extent bufferLiu Bo2013-02-20
| | | | | | | | | | | The API in tree log code has done sort of changes, and it proves that we can benifit from using token, so do the same thing here. function_graph tracer's timer shows that it costs nearly half time of before(39.788us -> 22.391us). Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: wait on ordered extents at the last possible momentJosef Bacik2013-02-20
| | | | | | | | | | | Since we don't actually copy the extent information from the source tree in the fast case we don't need to wait for ordered io to be completed in order to fsync, we just need to wait for the io to be completed. So when we're logging our file just attach all of the ordered extents to the log, and then when the log syncs just wait for IO_DONE on the ordered extents and then write the super. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: use wrapper page_offsetMiao Xie2013-02-20
| | | | | | | | Use wrapper page_offset to get byte-offset into filesystem object for page. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: fix lots of orphan inodes when the space is not enoughMiao Xie2013-02-20
| | | | | | | | | | | We're running into having 50-100 orphans left over with xfstests 83 because of ENOSPC when trying to start the transaction for the inode update. But in fact, it makes no sense in updating the inode for the new size while we're deleting the stupid thing. This patch fixes this problem. Reported-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: fix repeated delalloc work allocationMiao Xie2013-01-24
| | | | | | | | | | | | | | | btrfs_start_delalloc_inodes() locks the delalloc_inodes list, fetches the first inode, unlocks the list, triggers btrfs_alloc_delalloc_work/ btrfs_queue_worker for this inode, and then it locks the list, checks the head of the list again. But because we don't delete the first inode that it deals with before, it will fetch the same inode. As a result, this function allocates a huge amount of btrfs_delalloc_work structures, and OOM happens. Fix this problem by splice this delalloc list. Reported-by: Alex Lyakas <alex.btrfs@zadarastorage.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* btrfs: update timestamps on truncate()Eric Sandeen2013-01-14
| | | | | | | | | truncate() vs. ftruncate() differ in the VFS; truncate() doesn't set (ATTR_CTIME | ATTR_MTIME), and it's up to the fs to do the timestamp updates if the size changes. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com>
* btrfs: fix btrfs_cont_expand() freeing IS_ERR emZach Brown2013-01-14
| | | | | | | | | | | | | | | | | | | | | btrfs_cont_expand() tries to free an IS_ERR em as it gets an error from btrfs_get_extent() and breaks out of its loop. An instance of -EEXIST was reported in the wild: https://bugzilla.redhat.com/show_bug.cgi?id=874407 I have no idea if that -EEXIST is surprising, or not. Regardless, this error handling should be cleaned up to handle other reasonable errors (ENOMEM, EIO; whatever). This seemed to be the only buggy freeing of the relatively rare IS_ERR em so I opted to fix the caller rather than teach free_extent_map() to use IS_ERR_OR_NULL(). Signed-off-by: Zach Brown <zab@redhat.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com>
* Btrfs: fix a bug when llseek for delalloc bytes behind prealloc extentsLiu Bo2013-01-14
| | | | | | | | | | | xfstests case 285 complains. It it because btrfs did not try to find unwritten delalloc bytes(only dirty pages, not yet writeback) behind prealloc extents, it ends up finding nothing while we're with SEEK_DATA. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: add orphan before truncating pagecacheJosef Bacik2013-01-14
| | | | | | | | | | | | | Running xfstests 83 in a loop would sometimes fail the fsck. This happens because if we invalidate a page that already has an ordered extent setup for it we will complete the ordered extent ourselves, assuming that the truncate will clean everything up. The problem with this is there is plenty of time for the truncate to fail after we've done this work. So to fix this we need to add the orphan item first to make sure the cleanup gets done properly, and then we can truncate the pagecache and all that stuff and be safe. This fixes the btrfsck failures I was seeing while running 83 in a loop. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* Btrfs: fix a bug of per-file nocowLiu Bo2012-12-17
| | | | | | | | | | | | | | | | | | | | | | Users report a bug, the reproducer is: $ mkfs.btrfs /dev/loop0 $ mount /dev/loop0 /mnt/btrfs/ $ mkdir /mnt/btrfs/dir $ chattr +C /mnt/btrfs/dir/ $ dd if=/dev/zero of=/mnt/btrfs/dir/foo bs=4K count=10; $ lsattr /mnt/btrfs/dir/foo ---------------C- /mnt/btrfs/dir/foo $ filefrag /mnt/btrfs/dir/foo /mnt/btrfs/dir/foo: 1 extent found ---> an extent $ dd if=/dev/zero of=/mnt/btrfs/dir/foo bs=4K count=1 seek=5 conv=notrunc,nocreat; sync $ filefrag /mnt/btrfs/dir/foo /mnt/btrfs/dir/foo: 3 extents found ---> with nocow, btrfs breaks the extent into three parts The new created file should not only inherit the NODATACOW flag, but also honor NODATASUM flag, because we must do COW on a file extent with checksum. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: fix hash overflow handlingChris Mason2012-12-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | The handling for directory crc hash overflows was fairly obscure, split_leaf returns EOVERFLOW when we try to extend the item and that is supposed to bubble up to userland. For a while it did so, but along the way we added better handling of errors and forced the FS readonly if we hit IO errors during the directory insertion. Along the way, we started testing only for EEXIST and the EOVERFLOW case was dropped. The end result is that we may force the FS readonly if we catch a directory hash bucket overflow. This fixes a few problem spots. First I add tests for EOVERFLOW in the places where we can safely just return the error up the chain. btrfs_rename is harder though, because it tries to insert the new directory item only after it has already unlinked anything the rename was going to overwrite. Rather than adding very complex logic, I added a helper to test for the hash overflow case early while it is still safe to bail out. Snapshot and subvolume creation had a similar problem, so they are using the new helper now too. Signed-off-by: Chris Mason <chris.mason@fusionio.com> Reported-by: Pascal Junod <pascal@junod.info>
* Btrfs: fix permissions of empty files not affected by umaskFilipe Brandenburger2012-12-16
| | | | | | | | | | | | | | | | When a new file is created with btrfs_create(), the inode will initially be created with permissions 0666 and later on in btrfs_init_acl() it will be adapted to mask out the umask bits. The problem is that this change won't make it into the btrfs_inode unless there's another change to the inode (e.g. writing content changing the size or touching the file changing the mtime.) This fix adds a call to btrfs_update_inode() to btrfs_create() to make sure that the change will not get lost if the in-memory inode is flushed before other changes are made to the file. Signed-off-by: Filipe Brandenburger <filbranden@google.com> Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: do not call file_update_time in aio_writeJosef Bacik2012-12-16
| | | | | | | | | | | This starts a transaction and dirties the inode everytime we call it, which is super expensive if you have a write heavy workload. We will be updating the inode when the IO completes and we reserve the space for the inode update when we reserve space for the write, so there is no chance of loss of information or enospc issues. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: log changed inodes based on the extent map treeJosef Bacik2012-12-16
| | | | | | | | | | We don't really need to copy extents from the source tree since we have all of the information already available to us in the extent_map tree. So instead just write the extents straight to the log tree and don't bother to copy the extent items from the source tree. Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: do not mark ems as prealloc if we are writing to themJosef Bacik2012-12-16
| | | | | | | | | | We are going to use EM's to log extents in the future, so we need to not mark them as prealloc if they aren't actually prealloc extents. Instead mark them with FILLING so we know to ammend mod_start/mod_len and that way we don't confuse the extent logging code. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: keep track of the extents original block lengthJosef Bacik2012-12-16
| | | | | | | | | | | If we've written to a prealloc extent we need to know the original block len for the extent. We can't figure this out currently since ->block_len is just set to the extent length. So introduce ->orig_block_len so that we know how many bytes were in the original extent for proper extent logging that future patches will need. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: inline csums if we're fsyncingJosef Bacik2012-12-16
| | | | | | | | | | The tree logging stuff needs the csums to be on the ordered extents in order to log them properly, so mark that we're sync and inline the csum creation so we don't have to wait on the csumming to be done when logging extents that are still in flight. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: only log the inode item if we can get away with itJosef Bacik2012-12-16
| | | | | | | | | | Currently we copy all the file information into the log, inode item, the refs, xattrs etc. Except most of this doesn't change from fsync to fsync, just the inode item changes. So set a flag if an xattr changes or a link is added, and otherwise only log the inode item. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: fix wrong return value of btrfs_truncate_page()Miao Xie2012-12-16
| | | | | | | | | ret variant may be set to 0 if we read page successfully, but it might be released before we lock it again. On this case, if we fail to allocate a new page, we will return 0, it is wrong, fix it. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: don't auto defrag a file when doing directIOMiao Xie2012-12-16
| | | | | | | | If we runt the direct IO, we should not run auto defrag, because it may introduce buffered IO vs direcIO problem, and make direct IO slow down. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: refactor error handling to drop inode in btrfs_create()Filipe Brandenburger2012-12-16
| | | | | | | | | Refactor it by checking whether the inode has been created and needs to be dropped (drop_inode_on_err) and also if the err variable is set. That way the variable doesn't need to be set on each and every error handling block. Signed-off-by: Filipe Brandenburger <filbranden@google.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: fix permissions of empty files not affected by umaskFilipe Brandenburger2012-12-16
| | | | | | | | | | | | | | | | When a new file is created with btrfs_create(), the inode will initially be created with permissions 0666 and later on in btrfs_init_acl() it will be adapted to mask out the umask bits. The problem is that this change won't make it into the btrfs_inode unless there's another change to the inode (e.g. writing content changing the size or touching the file changing the mtime.) This fix adds a call to btrfs_update_inode() to btrfs_create() to make sure that the change will not get lost if the in-memory inode is flushed before other changes are made to the file. Signed-off-by: Filipe Brandenburger <filbranden@google.com> Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: add fiemap's flag checkTsutomu Itoh2012-12-16
| | | | | | | | | When the flag not supported is specified, it is necessary to return the error to the caller. So, we add the validity check of the fiemap's flag. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: handle errors from btrfs_map_bio() everywhereStefan Behrens2012-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the addition of the device replace procedure, it is possible for btrfs_map_bio(READ) to report an error. This happens when the specific mirror is requested which is located on the target disk, and the copy operation has not yet copied this block. Hence the block cannot be read and this error state is indicated by returning EIO. Some background information follows now. A new mirror is added while the device replace procedure is running. btrfs_get_num_copies() returns one more, and btrfs_map_bio(GET_READ_MIRROR) adds one more mirror if a disk location is involved that was already handled by the device replace copy operation. The assigned mirror num is the highest mirror number, e.g. the value 3 in case of RAID1. If btrfs_map_bio() is invoked with mirror_num == 0 (i.e., select any mirror), the copy on the target drive is never selected because that disk shall be able to perform the write requests as quickly as possible. The parallel execution of read requests would only slow down the disk copy procedure. Second case is that btrfs_map_bio() is called with mirror_num > 0. This is done from the repair code only. In this case, the highest mirror num is assigned to the target disk, since it is used last. And when this mirror is not available because the copy procedure has not yet handled this area, an error is returned. Everywhere in the code the handling of such errors is added now. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: pass fs_info to btrfs_map_block() instead of mapping_treeStefan Behrens2012-12-12
| | | | | | | | | This is required for the device replace procedure in a later step. Two calling functions also had to be changed to have the fs_info pointer: repair_io_failure() and scrub_setup_recheck_block(). Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: cleanup for btrfs_btree_balance_dirtyLiu Bo2012-12-12
| | | | | | | | | - 'nr' is no more used. - btrfs_btree_balance_dirty() and __btrfs_btree_balance_dirty() can share a bunch of code. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* fs/btrfs: drop if around WARN_ONJulia Lawall2012-12-12
| | | | | | | | | | | | | | | | | | | Just use WARN_ON rather than an if containing only WARN_ON(1). A simplified version of the semantic patch that makes this transformation is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; @@ - if (e) WARN_ON(1); + WARN_ON(e); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* fs/btrfs: use WARNJulia Lawall2012-12-12
| | | | | | | | | | | | | | | | | | | | | | Use WARN rather than printk followed by WARN_ON(1), for conciseness. A simplified version of the semantic patch that makes this transformation is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression list es; @@ -printk( +WARN(1, es); -WARN_ON(1); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: fix joining the same transaction handler more than 2 timesMiao Xie2012-12-12
| | | | | | | | | | | | | | | | | | | | | If we flush inodes with pending delalloc in a transaction, we may join the same transaction handler more than 2 times. The reason is: Task use_count of trans handle commit_transaction 1 |-> btrfs_start_delalloc_inodes 1 |-> run_delalloc_nocow 1 |-> join_transaction 2 |-> cow_file_range 2 |-> join_transaction 3 In fact, cow_file_range needn't join the transaction again because the caller have joined the transaction, so we fix this problem by this way. Reported-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: make delalloc inodes be flushed by multi-taskMiao Xie2012-12-11
| | | | | | | | | | This patch introduce a new worker pool named "flush_workers", and if we want to force all the inode with pending delalloc to the disks, we can queue those inodes into the work queue of the worker pool, in this way, those inodes will be flushed by multi-task. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs: improve the noflush reservationMiao Xie2012-12-11
| | | | | | | | | | | | | | | | In some places(such as: evicting inode), we just can not flush the reserved space of delalloc, flushing the delayed directory index and delayed inode is OK, but we don't try to flush those things and just go back when there is no enough space to be reserved. This patch fixes this problem. We defined 3 types of the flush operations: NO_FLUSH, FLUSH_LIMIT and FLUSH_ALL. If we can in the transaction, we should not flush anything, or the deadlock would happen, so use NO_FLUSH. If we flushing the reserved space of delalloc would cause deadlock, use FLUSH_LIMIT. In the other cases, FLUSH_ALL is used, and we will flush all things. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2012-10-26
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs fixes from Chris Mason: "This has our series of fixes for the next rc. The biggest batch is from Jan Schmidt, fixing up some problems in our subvolume quota code and fixing btrfs send/receive to work with the new extended inode refs." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: do not bug when we fail to commit the transaction Btrfs: fix memory leak when cloning root's node Btrfs: Use btrfs_update_inode_fallback when creating a snapshot Btrfs: Send: preserve ownership (uid and gid) also for symlinks. Btrfs: fix deadlock caused by the nested chunk allocation btrfs: Return EINVAL when length to trim is less than FSB Btrfs: fix memory leak in btrfs_quota_enable() Btrfs: send correct rdev and mode in btrfs-send Btrfs: extended inode refs support for send mechanism Btrfs: Fix wrong error handling code Fix a sign bug causing invalid memory access in the ino_paths ioctl. Btrfs: comment for loop in tree_mod_log_insert_move Btrfs: fix extent buffer reference for tree mod log roots Btrfs: determine level of old roots Btrfs: tree mod log's old roots could still be part of the tree Btrfs: fix a tree mod logging issue for root replacement operations Btrfs: don't put removals from push_node_left into tree mod log twice
| * Btrfs: Use btrfs_update_inode_fallback when creating a snapshotJosef Bacik2012-10-25
| | | | | | | | | | | | | | | | | | On a really full file system I was getting ENOSPC back from btrfs_update_inode when trying to update the parent inode when creating a snapshot. Just use the fallback method so we can update the inode and not have to worry about having a delayed ref. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2012-10-09
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs update from Chris Mason: "This is a large pull, with the bulk of the updates coming from: - Hole punching - send/receive fixes - fsync performance - Disk format extension allowing more hardlinks inside a single directory (btrfs-progs patch required to enable the compat bit for this one) I'm cooking more unrelated RAID code, but I wanted to make sure this original batch makes it in. The largest updates here are relatively old and have been in testing for some time." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (121 commits) btrfs: init ref_index to zero in add_inode_ref Btrfs: remove repeated eb->pages check in, disk-io.c/csum_dirty_buffer Btrfs: fix page leakage Btrfs: do not warn_on when we cannot alloc a page for an extent buffer Btrfs: don't bug on enomem in readpage Btrfs: cleanup pages properly when ENOMEM in compression Btrfs: make filesystem read-only when submitting barrier fails Btrfs: detect corrupted filesystem after write I/O errors Btrfs: make compress and nodatacow mount options mutually exclusive btrfs: fix message printing Btrfs: don't bother committing delayed inode updates when fsyncing btrfs: move inline function code to header file Btrfs: remove unnecessary IS_ERR in bio_readpage_error() btrfs: remove unused function btrfs_insert_some_items() Btrfs: don't commit instead of overcommitting Btrfs: confirmation of value is added before trace_btrfs_get_extent() is called Btrfs: be smarter about dropping things from the tree log Btrfs: don't lookup csums for prealloc extents Btrfs: cache extent state when writing out dirty metadata pages Btrfs: do not hold the file extent leaf locked when adding extent item ...
| * Btrfs: confirmation of value is added before trace_btrfs_get_extent() is calledTsutomu Itoh2012-10-09
| | | | | | | | | | | | | | | | We should confirm the value of extent_map before calling trace_btrfs_get_extent() because the value of extent_map has the possibility of NULL. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
| * Btrfs: do not hold the file extent leaf locked when adding extent itemJosef Bacik2012-10-09
| | | | | | | | | | | | | | | | | | | | | | For some reason we unlock everything except the leaf we are on, set the path blocking and then add the extent item for the extent we just finished writing. I can't for the life of me figure out why we would want to do this, and the history doesn't really indicate that there was a real reason for it, so just remove it. This will reduce our tree lock contention on heavy writes. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
| * Btrfs: add a type field for the transaction handleMiao Xie2012-10-09
| | | | | | | | | | | | | | | | This patch add a type field into the transaction handle structure, in this way, we needn't implement various end-transaction functions and can make the code more simple and readable. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
| * btrfs: extended inode refsMark Fasheh2012-10-09
| | | | | | | | | | | | | | | | | | | | | | This patch adds basic support for extended inode refs. This includes support for link and unlink of the refs, which basically gets us support for rename as well. Inode creation does not need changing - extended refs are only added after the ref array is full. Signed-off-by: Mark Fasheh <mfasheh@suse.de>
| * btrfs: return EPERM upon rmdir on a subvolumeDavid Sterba2012-10-04
| | | | | | | | | | | | | | A subvolume cannot be deleted via rmdir, but the error code ENOTEMPTY is confusing. Return EPERM instead, as this is not permitted. Signed-off-by: David Sterba <dsterba@suse.cz>
| * Btrfs: fix unnecessary warning when the fragments make the space alloc failMiao Xie2012-10-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we wrote some data by compress mode into a btrfs filesystem which was full of the fragments, the kernel will report: BTRFS warning (device xxx): Aborting unused transaction. The reason is: We can not find a long enough free space to store the compressed data because of the fragmentary free space, and the compressed data can not be splited, so the kernel outputed the above message. In fact, btrfs can deal with this problem very well: it fall back to uncompressed IO, split the uncompressed data into small ones, and then store them into to the fragmentary free space. So we shouldn't output the above warning message. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
| * Btrfs: create a pinned em when writing to a prealloc range in DIOJosef Bacik2012-10-01
| | | | | | | | | | | | | | | | | | | | | | Wade Cline reported a problem where he was getting garbage and warnings when writing to a preallocated range via O_DIRECT. This is because we weren't creating our normal pinned extent_map for the range we were writing to, which was causing all sorts of issues. This patch fixes the problem and makes his testcase much happier. Thanks, Reported-by: Wade Cline <clinew@linux.vnet.ibm.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
| * Btrfs: fix corrupted metadata in the snapshotMiao Xie2012-10-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we delete a inode, we will remove all the delayed items including delayed inode update, and then truncate all the relative metadata. If there is lots of metadata, we will end the current transaction, and start a new transaction to truncate the left metadata. In this way, we will leave a inode item that its link counter is > 0, and also may leave some directory index items in fs/file tree after the current transaction ends. In other words, the metadata in this fs/file tree is inconsistent. If we create a snapshot for this tree now, we will find a inode with corrupted metadata in the new snapshot, and we won't continue to drop the left metadata, because its link counter is not 0. We fix this problem by updating the inode item before the current transaction ends. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-16 11:33:39 -0400