- 08 Jun, 2011 2 commits
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Josef Bacik authored
When profiling the find cluster code it's hard to tell where we are spending our time because the bitmap and non-bitmap functions get inlined by the compiler, so make that not happen. Thanks, Signed-off-by:Josef Bacik <josef@redhat.com>
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Josef Bacik authored
If we are looking for a cluster in a particularly sparse or fragmented block group, we will do a lot of looping through the free space tree looking for various things, and if we need to look at bitmaps we will endup doing the whole dance twice. So instead add the bitmap entries to a temporary list so if we have to do the bitmap search we can just look through the list of entries we've found quickly instead of having to loop through the entire tree again. Thanks, Signed-off-by:
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- 04 Jun, 2011 11 commits
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David Sterba authored
With Linus' tree, today's linux-next build (powercp ppc64_defconfig) produced this warning: fs/btrfs/delayed-inode.c: In function 'btrfs_delayed_update_inode': fs/btrfs/delayed-inode.c:1598:6: warning: 'ret' may be used uninitialized in this function Introduced by commit 16cdcec7 ("btrfs: implement delayed inode items operation"). This fixes a bug in btrfs_update_inode(): if the returned value from btrfs_delayed_update_inode is a nonzero garbage, inode stat data are not updated and several call paths may hit a BUG_ON or fail with strange code. Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
David Sterba <dsterba@suse.cz>
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David Sterba authored
wrap checking of filesystem 'closing' flag and fix a few missing memory barriers. Signed-off-by: -
Chris Mason authored
This makes the inode map cache default to off until we fix the overflow problem when the free space crcs don't fit inside a single page. Signed-off-by:Chris Mason <chris.mason@oracle.com>
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Arne Jansen authored
With the removal of the implicit plugging scrub ends up doing more and smaller I/O than necessary. This patch adds explicit plugging per chunk. Signed-off-by:
Arne Jansen <sensille@gmx.net> Signed-off-by:
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David Sterba authored
commit 4cb5300b ("Btrfs: add mount -o auto_defrag") accesses inode number directly while it should use the helper with the new inode number allocator. Signed-off-by:
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Josef Bacik authored
With xfstest 254 I can panic the box every time with the inode number caching stuff on. This is because we clean the inodes out when we delete the subvolume, but then we write out the inode cache which adds an inode to the subvolume inode tree, and then when it gets evicted again the root gets added back on the dead roots list and is deleted again, so we have a double free. To stop this from happening just return 0 if refs is 0 (and we're not the tree root since tree root always has refs of 0). With this fix 254 no longer panics. Thanks, Signed-off-by:
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Arne Jansen authored
In degraded mode the struct btrfs_device of missing devs don't have device->name set. A kstrdup of NULL correctly returns NULL. Don't BUG in this case. Signed-off-by:
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liubo authored
This adds extra checks to make sure the inode map we are caching really belongs to a FS root instead of a special relocation tree. It prevents crashes during balancing operations. Signed-off-by:
Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by:
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Chris Mason authored
The free space cache uses only one page for crcs right now, which means we can't have a cache file bigger than the crcs we can fit in the first page. This adds a check to enforce that restriction. Signed-off-by: -
Chris Mason authored
The nitems counter needs to start at zero Signed-off-by: -
Arne Jansen authored
The current scrub implementation reuses bios and pages as often as possible, allocating them only on start and releasing them when finished. This leads to more problems with the block layer than it's worth. The elevator gets confused when there are more pages added to the bio than bi_size suggests. This patch completely rips out the reuse of bios and pages and allocates them freshly for each submit. Signed-off-by:
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- 28 May, 2011 1 commit
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Chris Mason authored
git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work into for-linus Conflicts: fs/btrfs/disk-io.c fs/btrfs/extent-tree.c fs/btrfs/free-space-cache.c fs/btrfs/inode.c fs/btrfs/transaction.c Signed-off-by:
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- 27 May, 2011 1 commit
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Chris Mason authored
write_dev_supers was changed to use RCU to protect the list of devices, but it was then sleeping while it actually wrote the supers. This fixes it to just use the mutex, since we really don't any concurrency in write_dev_supers anyway. Signed-off-by:
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- 26 May, 2011 4 commits
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Li Zefan authored
For a filesystem that has lots of files in it, the first time we mount it with free ino caching support, it can take quite a long time to setup the caching before we can create new files. Here we fill the cache with [highest_ino, BTRFS_LAST_FREE_OBJECTID] before we start the caching thread to search through the extent tree. Signed-off-by:
Li Zefan <lizf@cn.fujitsu.com> Signed-off-by:
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Arne Jansen authored
scrub_page collects several pages into one bio as long as they are physically contiguous. As we only save one logical address for the whole bio, don't collect pages that are physically contiguous but logically discontiguous. Signed-off-by:
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Chris Mason authored
The btrfs releasepage function depends on ENOMEM coming back when it is called atomic. Signed-off-by: -
Chris Mason authored
This will detect small random writes into files and queue the up for an auto defrag process. It isn't well suited to database workloads yet, but works for smaller files such as rpm, sqlite or bdb databases. Signed-off-by:
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- 23 May, 2011 21 commits
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Chris Mason authored
Conflicts: fs/btrfs/tree-log.c fs/btrfs/volumes.c Signed-off-by: -
Xiao Guangrong authored
fs_devices->devices is only updated on remove and add device paths, so we can use rcu to protect it in the reader side Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
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Xiao Guangrong authored
Drop device_list_mutex for the reader side on clone_fs_devices and btrfs_rm_device pathes since the fs_info->volume_mutex can ensure the device list is not updated btrfs_close_extra_devices is the initialized path, we can not add or remove device at this time, so we can simply drop the mutex safely, like other initialized function does(add_missing_dev, __find_device, __btrfs_open_devices ...). Signed-off-by:
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Xiao Guangrong authored
On remove device path, it updates device->dev_alloc_list but does not hold chunk lock Signed-off-by:
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Xiao Guangrong authored
On btrfs_congested_fn and __unplug_io_fn paths, we should hold device_list_mutex to avoid remove/add device path to update fs_devices->devices On __btrfs_close_devices and btrfs_prepare_sprout paths, the devices in fs_devices->devices or fs_devices->devices is updated, so we should hold the mutex to avoid the reader side to reach them Signed-off-by:
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Xiao Guangrong authored
'bh' is forgot to release if no error is detected Signed-off-by:
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Xiao Guangrong authored
merge_state can free the current state if it can be merged with the next node, but in set_extent_bit(), after merge_state, we still use the current extent to get the next node and cache it into cached_state Signed-off-by:
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Xiao Guangrong authored
It doesn't allocate extent_state and check the result properly: - in set_extent_bit, it doesn't allocate extent_state if the path is not allowed wait - in clear_extent_bit, it doesn't check the result after atomic-ly allocate, we trigger BUG_ON() if it's fail - if allocate fail, we trigger BUG_ON instead of returning -ENOMEM since the return value of clear_extent_bit() is ignored by many callers Signed-off-by:
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Julia Lawall authored
Btrfs_alloc_path should be matched with btrfs_free_path in error-handling code. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ local idexpression struct btrfs_path * x; expression ra,rb; position p1,p2; @@ x = btrfs_alloc_path@p1(...) ... when != btrfs_free_path(x,...) when != if (...) { ... btrfs_free_path(x,...) ...} when != x = ra if(...) { ... when != x = rb when forall when != btrfs_free_path(x,...) \(return <+...x...+>; \| return@p2...; \) } @script:python@ p1 << r.p1; p2 << r.p2; @@ cocci.print_main("alloc",p1) cocci.print_secs("return",p2) // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Signed-off-by:
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Tsutomu Itoh authored
If return value of btrfs_inc_extent_ref() is not 0, BUG() is called. Signed-off-by:
Tsutomu Itoh <t-itoh@jp.fujitsu.com> Signed-off-by:
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Tsutomu Itoh authored
When read_one_inode() fails, error code is returned to caller instead of BUG_ON(). Signed-off-by:
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Tsutomu Itoh authored
Currently, btrfs_truncate_item and btrfs_extend_item returns only 0. So, the check by BUG_ON in the caller is unnecessary. Signed-off-by:
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Tsutomu Itoh authored
The error code is returned instead of calling BUG_ON when btrfs_del_item returns the error. Signed-off-by:
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Tsutomu Itoh authored
The error code is returned instead of calling BUG_ON when btrfs_previous_item returns the error. Signed-off-by:
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Sergei Trofimovich authored
Signed-off-by:
Sergei Trofimovich <slyfox@gentoo.org> Signed-off-by:
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Sergei Trofimovich authored
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Sergei Trofimovich authored
Observed as a large delay when --mixed filesystem is filled up. Test example: 1. create tiny --mixed FS: $ dd if=/dev/zero of=2G.img seek=$((2048 * 1024 * 1024 - 1)) count=1 bs=1 $ mkfs.btrfs --mixed 2G.img $ mount -oloop 2G.img /mnt/ut/ 2. Try to fill it up: $ dd if=/dev/urandom of=10M.file bs=10240 count=1024 $ seq 1 256 | while read file_no; do echo $file_no; time cp 10M.file ${file_no}.copy; done Up to '200.copy' it goes fast, but when disk fills-up each -ENOSPC message takes 3 seconds to pop-up _every_ ENOSPC (and in usermode linux it's even more: 30-60 seconds!). (Maybe, time depends on kernel's timer resolution). No IO, no CPU load, just rescheduling. Some debugging revealed busy spinning in shrink_delalloc. Signed-off-by: -
Jamey Sharp authored
In 2008, commit b4f6c45d dropped the use of fs/btrfs/version.sh, but left the script behind. Kill it. Commit by Jamey Sharp and Josh Triplett. Signed-off-by:
Jamey Sharp <jamey@minilop.net> Signed-off-by:
Josh Triplett <josh@joshtriplett.org> Cc: Chris Mason <chris.mason@oracle.com> Signed-off-by:
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Hugo Mills authored
Btrfs's tree search ioctl has a field to indicate that no more than a given number of records should be returned. The ioctl doesn't honour this, as the tested value is not incremented until the end of the copy_to_sk function. This patch removes an unnecessary local variable, and updates the num_found counter as each key is found in the tree. Signed-off-by:
Hugo Mills <hugo@carfax.org.uk> Signed-off-by:
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Andi Kleen authored
240f62c8 replaced the node_lock with rcu_read_lock, but forgot to remove the actual lock in the data structure. Remove it here. Signed-off-by:
Andi Kleen <ak@linux.intel.com> Signed-off-by:
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Josef Bacik authored
On lookup we only want to read the inode item, so leave the path spinning. Also we're just wholesale reading the leaf off, so map the leaf so we don't do a bunch of kmap/kunmaps. Thanks, Signed-off-by:
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