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| * Btrfs: Integrate metadata reservation with start_transactionYan, Zheng2010-05-2515-528/+678
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Besides simplify the code, this change makes sure all metadata reservation for normal metadata operations are released after committing transaction. Changes since V1: Add code that check if unlink and rmdir will free space. Add ENOSPC handling for clone ioctl. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: Introduce contexts for metadata reservationYan, Zheng2010-05-257-385/+853
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introducing metadata reseravtion contexts has two major advantages. First, it makes metadata reseravtion more traceable. Second, it can reclaim freed space and re-add them to the itself after transaction committed. Besides add btrfs_block_rsv structure and related helper functions, This patch contains following changes: Move code that decides if freed tree block should be pinned into btrfs_free_tree_block(). Make space accounting more accurate, mainly for handling read only block groups. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: Kill init_btrfs_i()Yan, Zheng2010-05-251-36/+28
| | | | | | | | | | | | | | All code in init_btrfs_i can be moved into btrfs_alloc_inode() Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: Shrink delay allocated space in a synchronizedYan, Zheng2010-05-254-121/+88
| | | | | | | | | | | | | | | | | | Shrink delayed allocation space in a synchronized manner is more controllable than flushing all delay allocated space in an async thread. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: Kill allocate_wait in space_infoYan, Zheng2010-05-252-76/+58
| | | | | | | | | | | | | | | | We already have fs_info->chunk_mutex to avoid concurrent chunk creation. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: Link block groups of different raid typesYan, Zheng2010-05-253-55/+121
| | | | | | | | | | | | | | | | | | The size of reserved space is stored in space_info. If block groups of different raid types are linked to separate space_info, changing allocation profile will corrupt reserved space accounting. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* | driver core: add devname module aliases to allow module on-demand auto-loadingKay Sievers2010-05-251-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds: alias: devname:<name> to some common kernel modules, which will allow the on-demand loading of the kernel module when the device node is accessed. Ideally all these modules would be compiled-in, but distros seems too much in love with their modularization that we need to cover the common cases with this new facility. It will allow us to remove a bunch of pretty useless init scripts and modprobes from init scripts. The static device node aliases will be carried in the module itself. The program depmod will extract this information to a file in the module directory: $ cat /lib/modules/2.6.34-00650-g537b60d-dirty/modules.devname # Device nodes to trigger on-demand module loading. microcode cpu/microcode c10:184 fuse fuse c10:229 ppp_generic ppp c108:0 tun net/tun c10:200 dm_mod mapper/control c10:235 Udev will pick up the depmod created file on startup and create all the static device nodes which the kernel modules specify, so that these modules get automatically loaded when the device node is accessed: $ /sbin/udevd --debug ... static_dev_create_from_modules: mknod '/dev/cpu/microcode' c10:184 static_dev_create_from_modules: mknod '/dev/fuse' c10:229 static_dev_create_from_modules: mknod '/dev/ppp' c108:0 static_dev_create_from_modules: mknod '/dev/net/tun' c10:200 static_dev_create_from_modules: mknod '/dev/mapper/control' c10:235 udev_rules_apply_static_dev_perms: chmod '/dev/net/tun' 0666 udev_rules_apply_static_dev_perms: chmod '/dev/fuse' 0666 A few device nodes are switched to statically allocated numbers, to allow the static nodes to work. This might also useful for systems which still run a plain static /dev, which is completely unsafe to use with any dynamic minor numbers. Note: The devname aliases must be limited to the *common* and *single*instance* device nodes, like the misc devices, and never be used for conceptually limited systems like the loop devices, which should rather get fixed properly and get a control node for losetup to talk to, instead of creating a random number of device nodes in advance, regardless if they are ever used. This facility is to hide the mess distros are creating with too modualized kernels, and just to hide that these modules are not compiled-in, and not to paper-over broken concepts. Thanks! :) Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: David S. Miller <davem@davemloft.net> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: Chris Mason <chris.mason@oracle.com> Cc: Alasdair G Kergon <agk@redhat.com> Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk> Cc: Ian Kent <raven@themaw.net> Signed-Off-By: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | Merge branch 'for-linus' of ↵Linus Torvalds2010-05-214-16/+7
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (69 commits) fix handling of offsets in cris eeprom.c, get rid of fake on-stack files get rid of home-grown mutex in cris eeprom.c switch ecryptfs_write() to struct inode *, kill on-stack fake files switch ecryptfs_get_locked_page() to struct inode * simplify access to ecryptfs inodes in ->readpage() and friends AFS: Don't put struct file on the stack Ban ecryptfs over ecryptfs logfs: replace inode uid,gid,mode initialization with helper function ufs: replace inode uid,gid,mode initialization with helper function udf: replace inode uid,gid,mode init with helper ubifs: replace inode uid,gid,mode initialization with helper function sysv: replace inode uid,gid,mode initialization with helper function reiserfs: replace inode uid,gid,mode initialization with helper function ramfs: replace inode uid,gid,mode initialization with helper function omfs: replace inode uid,gid,mode initialization with helper function bfs: replace inode uid,gid,mode initialization with helper function ocfs2: replace inode uid,gid,mode initialization with helper function nilfs2: replace inode uid,gid,mode initialization with helper function minix: replace inode uid,gid,mode init with helper ext4: replace inode uid,gid,mode init with helper ... Trivial conflict in fs/fs-writeback.c (mark bitfields unsigned)
| * | btrfs: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov2010-05-211-10/+1
| | | | | | | | | | | | | | | Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | btrfs: constify xattr_handlerStephen Hemminger2010-05-213-6/+6
| |/ | | | | | | | | Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'master' into for-2.6.35Jens Axboe2010-05-211-0/+5
|\ \ | |/ | | | | | | | | | | Conflicts: fs/ext3/fsync.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds2010-05-151-0/+5
| |\ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: check for read permission on src file in the clone ioctl
| | * Btrfs: check for read permission on src file in the clone ioctlDan Rosenberg2010-05-151-0/+5
| | | | | | | | | | | | | | | | | | | | | The existing code would have allowed you to clone a file that was only open for writing Signed-off-by: Chris Mason <chris.mason@oracle.com>
* | | Merge branch 'master' into for-2.6.35Jens Axboe2010-04-291-11/+1
|\ \ \ | |/ / | | | | | | | | | | | | | | | Conflicts: fs/block_dev.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | btrfs: convert to using bdi_setup_and_register()Jens Axboe2010-04-261-11/+1
| | | | | | | | | | | | | | | | | | | | | It's now a provided helper, so get rid of the internal setup and btrfs atomic_t bdi enumerator. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | | blkdev: generalize flags for blkdev_issue_fn functionsDmitry Monakhov2010-04-281-1/+1
|/ / | | | | | | | | | | | | | | The patch just convert all blkdev_issue_xxx function to common set of flags. Wait/allocation semantics preserved. Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | Merge branch 'master' of ↵Linus Torvalds2010-04-122-5/+21
|\ \ | |/ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: make sure the chunk allocator doesn't create zero length chunks Btrfs: fix data enospc check overflow
| * Btrfs: make sure the chunk allocator doesn't create zero length chunksChris Mason2010-04-061-0/+6
| | | | | | | | | | | | | | | | A recent commit allowed for smaller chunks to be created, but didn't make sure they were always bigger than a stripe. After some divides, this led to zero length stripes. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: fix data enospc check overflowJosef Bacik2010-04-051-5/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Because we account for reserved space we get from the allocator before we actually account for allocating delalloc space, we can have a small window where the amount of "used" space in a space_info is more than the total amount of space in the space_info. This will cause a overflow in our check, so it will seem like we have _tons_ of free space, and we'll allow reservations to occur that will end up larger than the amount of space we have. I've seen users report ENOSPC panic's in cow_file_range a few times recently, so I tried to reproduce this problem and found I could reproduce it if I ran one of my tests in a loop for like 20 minutes. With this patch my test ran all night without issues. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds2010-04-0512-204/+90
|\ \ | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: add check for changed leaves in setup_leaf_for_split Btrfs: create snapshot references in same commit as snapshot Btrfs: fix small race with delalloc flushing waitqueue's Btrfs: use add_to_page_cache_lru, use __page_cache_alloc Btrfs: fix chunk allocate size calculation Btrfs: kill max_extent mount option Btrfs: fail to mount if we have problems reading the block groups Btrfs: check btrfs_get_extent return for IS_ERR() Btrfs: handle kmalloc() failure in inode lookup ioctl Btrfs: dereferencing freed memory Btrfs: Simplify num_stripes's calculation logical for __btrfs_alloc_chunk() Btrfs: Add error handle for btrfs_search_slot() in btrfs_read_chunk_tree() Btrfs: Remove unnecessary finish_wait() in wait_current_trans() Btrfs: add NULL check for do_walk_down() Btrfs: remove duplicate include in ioctl.c Fix trivial conflict in fs/btrfs/compression.c due to slab.h include cleanups.
| * Btrfs: add check for changed leaves in setup_leaf_for_splitChris Mason2010-04-051-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | setup_leaf_for_split needs to drop the path and search again, and has checks to see if the item we want to split changed size. But, it misses the case where the leaf changed and now has enough room for the item we want to insert. This adds an extra check to make sure the leaf really needs splitting before we call btrfs_split_leaf(), which keeps us from trying to split a leaf with a single item. btrfs_split_leaf() will blindly split the single item leaf, leaving us with one good leaf and one empty leaf and then a crash. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: create snapshot references in same commit as snapshotSage Weil2010-04-051-66/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This creates the reference to a new snapshot in the same commit as the snapshot itself. This avoids the need for a second commit in order for a snapshot to be persistent, and also avoids the problem of "leaking" a new snapshot tree root if the host crashes before the second commit takes place. It is not at all clear to me why it wasn't always done this way. If there is still a reason for the two-stage {create,finish}_pending_snapshots() approach I'm missing something! :) I've been running this for a couple weeks under pretty heavy usage (a few snapshots per minute) without obvious problems. Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: fix small race with delalloc flushing waitqueue'sJosef Bacik2010-04-051-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Everytime we start a new flushing thread, we init the waitqueue if there isn't a flushing thread running. The problem with this is we check space_info->flushing, which we clear right before doing a wake_up on the flushing waitqueue, which causes problems if we init the waitqueue in the middle of clearing the flushing flagh and calling wake_up. This is hard to hit, but the code is wrong anyway, so init the flushing/allocating waitqueue when creating the space info and let it be. I haven't seen the panic since I've been using this patch. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: use add_to_page_cache_lru, use __page_cache_allocNick Piggin2010-04-052-32/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | Pagecache pages should be allocated with __page_cache_alloc, so they obey pagecache memory policies. add_to_page_cache_lru is exported, so it should be used. Benefits over using a private pagevec: neater code, 128 bytes fewer stack used, percpu lru ordering is preserved, and finally don't need to flush pagevec before returning so batching may be shared with other LRU insertions. Signed-off-by: Nick Piggin <npiggin@suse.de>: Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: fix chunk allocate size calculationJosef Bacik2010-03-301-1/+3
| | | | | | | | | | | | | | | | | | | | | | If the amount of free space left in a device is less than what we think should be the minimum size, just ignore the minimum size and use the amount we have. I ran into this running tests on a 600mb volume, the chunk allocator wouldn't let me allocate the last 52mb of the disk for data because we want to have at least 64mb chunks for data. This patch fixes that problem. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: kill max_extent mount optionJosef Bacik2010-03-306-81/+13
| | | | | | | | | | | | | | | | | | | | | | As Yan pointed out, theres not much reason for all this complicated math to account for file extents being split up into max_extent chunks, since they are likely to all end up in the same leaf anyway. Since there isn't much reason to use max_extent, just remove the option altogether so we have one less thing we need to test. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: fail to mount if we have problems reading the block groupsJosef Bacik2010-03-302-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't actually check the return value of btrfs_read_block_groups, so we can possibly succeed to mount, but then fail to say read the superblock xattr for selinux which will cause the vfs code to deactivate the super. This is a problem because in find_free_extent we just assume that we will find the right space_info for the allocation we want. But if we failed to read the block groups, we won't have setup any space_info's, and we'll hit a NULL pointer deref in find_free_extent. This patch fixes that problem by checking the return value of btrfs_read_block_groups, and failing out properly. I've also added a check in find_free_extent so if for some reason we don't find an appropriate space_info, we just return -ENOSPC. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: check btrfs_get_extent return for IS_ERR()Dan Carpenter2010-03-301-1/+1
| | | | | | | | | | | | | | btrfs_get_extent() never returns NULL, only a valid pointer or ERR_PTR() Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: handle kmalloc() failure in inode lookup ioctlDan Carpenter2010-03-301-0/+3
| | | | | | | | | | | | | | Return -ENOMEM if kmalloc() fails. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: dereferencing freed memoryDan Carpenter2010-03-301-0/+1
| | | | | | | | | | | | | | The original code dereferenced range on the next line. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: Simplify num_stripes's calculation logical for __btrfs_alloc_chunk()Zhao Lei2010-03-301-2/+2
| | | | | | | | | | | | | | | | We can use this simple method to make source more readable. Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: Add error handle for btrfs_search_slot() in btrfs_read_chunk_tree()Zhao Lei2010-03-301-0/+2
| | | | | | | | | | | | | | | | | | We need to check return value of btrfs_search_slot() in btrfs_read_chunk_tree() and do corresponding error handing. Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: Remove unnecessary finish_wait() in wait_current_trans()Zhao Lei2010-03-301-10/+5
| | | | | | | | | | | | | | | | | | | | | | We only need to call finish_wait() after wait loop. By the way, this patch makes code of waiting loop similar to example in wait.h(no functional change) Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: add NULL check for do_walk_down()Miao Xie2010-03-301-1/+4
| | | | | | | | | | | | | | | | btrfs_find_create_tree_block() may return NULL, so we must check the returned value, or we will access a NULL pointer. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: remove duplicate include in ioctl.cAndrea Gelmini2010-03-301-1/+0
| | | | | | | | | | | | | | fs/btrfs/ioctl.c: ctree.h is included more than once. Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* | include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-3023-4/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds2010-03-1819-229/+1225
|\ \ | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (30 commits) Btrfs: fix the inode ref searches done by btrfs_search_path_in_tree Btrfs: allow treeid==0 in the inode lookup ioctl Btrfs: return keys for large items to the search ioctl Btrfs: fix key checks and advance in the search ioctl Btrfs: buffer results in the space_info ioctl Btrfs: use __u64 types in ioctl.h Btrfs: fix search_ioctl key advance Btrfs: fix gfp flags masking in the compression code Btrfs: don't look at bio flags after submit_bio btrfs: using btrfs_stack_device_id() get devid btrfs: use memparse Btrfs: add a "df" ioctl for btrfs Btrfs: cache the extent state everywhere we possibly can V2 Btrfs: cache ordered extent when completing io Btrfs: cache extent state in find_delalloc_range Btrfs: change the ordered tree to use a spinlock instead of a mutex Btrfs: finish read pages in the order they are submitted btrfs: fix btrfs_mkdir goto for no free objectids Btrfs: flush data on snapshot creation Btrfs: make df be a little bit more understandable ...
| * Btrfs: fix the inode ref searches done by btrfs_search_path_in_treeChris Mason2010-03-181-3/+6
| | | | | | | | | | | | | | | | | | | | | | This is used by the inode lookup ioctl to follow all the backrefs up to the subvol root. But the search being done would sometimes land one past the last item in the leaf instead of finding the backref. This changes the search to look for the highest possible backref and hop back one item. It also fixes a leaked path on failure to find the root. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: allow treeid==0 in the inode lookup ioctlChris Mason2010-03-181-0/+3
| | | | | | | | | | | | | | | | | | | | | | When a root id of 0 is sent to the inode lookup ioctl, it will use the root of the file we're ioctling and pass the root id back to userland along with the results. This allows userland to do searches based on that root later on. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: return keys for large items to the search ioctlChris Mason2010-03-181-1/+1
| | | | | | | | | | | | | | | | | | The search ioctl was skipping large items entirely (ones that are too big for the results buffer). This changes things to at least copy the item header so that we can send information about the item back to userland. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: fix key checks and advance in the search ioctlChris Mason2010-03-181-14/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The search ioctl was working well for finding tree roots, but using it for generic searches requires a few changes to how the keys are advanced. This treats the search control min fields for objectid, type and offset more like a key, where we drop the offset to zero once we bump the type, etc. The downside of this is that we are changing the min_type and min_offset fields during the search, and so the ioctl caller needs extra checks to make sure the keys in the result are the ones it wanted. This also changes key_in_sk to use btrfs_comp_cpu_keys, just to make things more readable. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: buffer results in the space_info ioctlChris Mason2010-03-161-11/+46
| | | | | | | | | | | | | | | | The space_info ioctl was using copy_to_user inside rcu_read_lock. This commit changes things to copy into a buffer first and then dump the result down to userland. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: use __u64 types in ioctl.hSage Weil2010-03-161-5/+5
| | | | | | | | | | Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: fix search_ioctl key advanceSage Weil2010-03-161-1/+1
| | | | | | | | | | | | | | | | | | | | key->type is u8, not u64. fs/btrfs/ioctl.c: In function 'copy_to_sk': fs/btrfs/ioctl.c:1024: warning: comparison is always true due to limited range of data type Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: fix gfp flags masking in the compression codeNick Piggin2010-03-151-1/+1
| | | | | | | | | | | | GFP_FS must be masked out, NOFS can't be or'd in. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: don't look at bio flags after submit_bioChris Mason2010-03-151-3/+3
| | | | | | | | | | | | | | | | | | | | After callling submit_bio, the bio can be freed at any time. The btrfs submission thread helper was checking the bio flags too late, which might not give the correct answer. When CONFIG_DEBUG_PAGE_ALLOC is turned on, it can lead to oopsen. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * btrfs: using btrfs_stack_device_id() get devidXiao Guangrong2010-03-151-3/+3
| | | | | | | | | | | | | | We can use btrfs_stack_device_id() to get dev_item->devid Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * btrfs: use memparseAkinobu Mita2010-03-153-30/+4
| | | | | | | | | | | | | | | | | | Use memparse() instead of its own private implementation. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: linux-btrfs@vger.kernel.org Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: add a "df" ioctl for btrfsJosef Bacik2010-03-152-1/+58
| | | | | | | | | | | | | | | | | | | | df is a very loaded question in btrfs. This gives us a way to get the per-space usage information so we can tell exactly what is in use where. This will help us figure out ENOSPC problems, and help users better understand where their disk space is going. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * Btrfs: cache the extent state everywhere we possibly can V2Josef Bacik2010-03-159-90/+148
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch just goes through and fixes everybody that does lock_extent() blah unlock_extent() to use lock_extent_bits() blah unlock_extent_cached() and pass around a extent_state so we only have to do the searches once per function. This gives me about a 3 mb/s boots on my random write test. I have not converted some things, like the relocation and ioctl's, since they aren't heavily used and the relocation stuff is in the middle of being re-written. I also changed the clear_extent_bit() to only unset the cached state if we are clearing EXTENT_LOCKED and related stuff, so we can do things like this lock_extent_bits() clear delalloc bits unlock_extent_cached() without losing our cached state. I tested this thoroughly and turned on LEAK_DEBUG to make sure we weren't leaking extent states, everything worked out fine. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
generated by cgit v1.1 at 2024-12-28 08:43:59 +0000