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* Merge branch 'for-linus' of ↵Linus Torvalds2012-12-20
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull VFS update from Al Viro: "fscache fixes, ESTALE patchset, vmtruncate removal series, assorted misc stuff." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (79 commits) vfs: make lremovexattr retry once on ESTALE error vfs: make removexattr retry once on ESTALE vfs: make llistxattr retry once on ESTALE error vfs: make listxattr retry once on ESTALE error vfs: make lgetxattr retry once on ESTALE vfs: make getxattr retry once on an ESTALE error vfs: allow lsetxattr() to retry once on ESTALE errors vfs: allow setxattr to retry once on ESTALE errors vfs: allow utimensat() calls to retry once on an ESTALE error vfs: fix user_statfs to retry once on ESTALE errors vfs: make fchownat retry once on ESTALE errors vfs: make fchmodat retry once on ESTALE errors vfs: have chroot retry once on ESTALE error vfs: have chdir retry lookup and call once on ESTALE error vfs: have faccessat retry once on an ESTALE error vfs: have do_sys_truncate retry once on an ESTALE error vfs: fix renameat to retry on ESTALE errors vfs: make do_unlinkat retry once on ESTALE errors vfs: make do_rmdir retry once on ESTALE errors vfs: add a flags argument to user_path_parent ...
| * vfs: remove DCACHE_NEED_LOOKUPJeff Layton2012-12-20
| | | | | | | | | | | | | | | | | | | | | | The code that relied on that flag was ripped out of btrfs quite some time ago, and never added back. Josef indicated that he was going to take a different approach to the problem in btrfs, and that we could just eliminate this flag. Cc: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'for-linus' of ↵Linus Torvalds2012-12-20
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull two btrfs reverts from Chris Mason: "I had missed that for two of the patches in my last pull, we had included different fixes during 3.7." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Revert "Btrfs: reorder tree mod log operations in deleting a pointer" Revert "Btrfs: MOD_LOG_KEY_REMOVE_WHILE_MOVING never change node's nritems"
| * Revert "Btrfs: reorder tree mod log operations in deleting a pointer"Chris Mason2012-12-18
| | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 6a7a665d78c5dd8bc76a010648c4e7d84517ab5a. This was bug was fixed differently in 3.6, so this commit isn't needed. Conflicts: fs/btrfs/ctree.c Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Revert "Btrfs: MOD_LOG_KEY_REMOVE_WHILE_MOVING never change node's nritems"Chris Mason2012-12-18
| | | | | | | | | | | | | | | | This reverts commit 95c80bb1f6b24b57058d971ed252b2c1c5121b51. The bug addressed by this commit was fixed differently back in 3.6 Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2012-12-18
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs update from Chris Mason: "A big set of fixes and features. In terms of line count, most of the code comes from Stefan, who added the ability to replace a single drive in place. This is different from how btrfs normally replaces drives, and is much much much faster. Josef is plowing through our synchronous write performance. This pull request does not include the DIO_OWN_WAITING patch that was discussed on the list, but it has a number of other improvements to cut down our latencies and CPU time during fsync/O_DIRECT writes. Miao Xie has a big series of fixes and is spreading out ordered operations over more CPUs. This improves performance and reduces contention. I've put in fixes for error handling around hash collisions. These are going back to individual stable kernels as I test against them. Otherwise we have a lot of fixes and cleanups, thanks everyone! raid5/6 is being rebased against the device replacement code. I'll have it posted this Friday along with a nice series of benchmarks." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (115 commits) Btrfs: fix a bug of per-file nocow Btrfs: fix hash overflow handling Btrfs: don't take inode delalloc mutex if we're a free space inode Btrfs: fix autodefrag and umount lockup Btrfs: fix permissions of empty files not affected by umask Btrfs: put raid properties into global table Btrfs: fix BUG() in scrub when first superblock reading gives EIO Btrfs: do not call file_update_time in aio_write Btrfs: only unlock and relock if we have to Btrfs: use tokens where we can in the tree log Btrfs: optimize leaf_space_used Btrfs: don't memset new tokens Btrfs: only clear dirty on the buffer if it is marked as dirty Btrfs: move checks in set_page_dirty under DEBUG Btrfs: log changed inodes based on the extent map tree Btrfs: add path->really_keep_locks Btrfs: do not mark ems as prealloc if we are writing to them Btrfs: keep track of the extents original block length Btrfs: inline csums if we're fsyncing Btrfs: don't bother copying if we're only logging the inode ...
| * 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: don't take inode delalloc mutex if we're a free space inodeJosef Bacik2012-12-16
| | | | | | | | | | | | | | | | | | This confuses and angers lockdep even though it's ok. We don't really need the lock for free space inodes since only the transaction committer will be reserving space. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: fix autodefrag and umount lockupJosef Bacik2012-12-16
| | | | | | | | | | | | | | | | | | | | This happens because writeback_inodes_sb_nr_if_idle does down_read. This doesn't work for us and it has not been fixed upstream yet, so do it ourselves and use that instead so we can stop having this stupid long standing lockup. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.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: put raid properties into global tableLiu Bo2012-12-16
| | | | | | | | | | | | | | | | Raid properties can be shared among raid calculation code, we can put them into a global table to keep it simple. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: fix BUG() in scrub when first superblock reading gives EIOStefan Behrens2012-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a very special case that can be reproduced by just disconnecting a disk at runtime, and without unmounting the filesystem first, start scrub on the filesystem with the disconnected disk. All read and write EIOs are handled correctly, only the first superblock is an exception and gives a BUG() in a subfunction. The BUG() is correct, it would crash later otherwise. The subfunction must not be called for superblocks and this is what the fix changes. Reported-by: Joeri Vanthienen <mail@joerivanthienen.be> Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> 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: only unlock and relock if we have toJosef Bacik2012-12-16
| | | | | | | | | | | | | | | | | | | | | | I noticed while doing fsync tests that we were always dropping the path and re-searching when we first cow the log root even though we've already gotten the write lock on the root. That's because we don't take into account that there might not be a parent node, so fix the check to make sure there is actually a parent node before we undo all of this work for nothing. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: use tokens where we can in the tree logJosef Bacik2012-12-16
| | | | | | | | | | | | | | | | | | | | | | If we are syncing over and over the overhead of doing all those maps in fill_inode_item and log_changed_extents really starts to hurt, so use map tokens so we can avoid all the extra mapping. Since the token maps from our offset to the end of the page make sure to set the first thing in the item first so we really only do one map. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: optimize leaf_space_usedJosef Bacik2012-12-16
| | | | | | | | | | | | | | | | | | | | This gets called at least 4 times for every level while adding an object, and it involves 3 kmapping calls, which on my box take about 5us a piece. So instead use a token, which brings us down to 1 kmap call and makes this function take 1/3 of the time per call. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: don't memset new tokensJosef Bacik2012-12-16
| | | | | | | | | | | | | | | | | | Our token logic depends on token->kaddr being set, and if it is not it sets everything properly as needed. So instead of memsetting just set token->kaddr to NULL. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: only clear dirty on the buffer if it is marked as dirtyJosef Bacik2012-12-16
| | | | | | | | | | | | | | | | No reason to set the path blocking or loop through all of the pages if the extent buffer isn't actually marked dirty. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: move checks in set_page_dirty under DEBUGJosef Bacik2012-12-16
| | | | | | | | | | | | | | | | This is a high traffic function, let's try and do as little as possible during normal operations shall we? 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: add path->really_keep_locksJosef Bacik2012-12-16
| | | | | | | | | | | | | | | | | | | | | | | | You'd think path->keep_locks would keep all the locks wouldn't you? You'd be wrong. It only keeps them if the slot is pointing to the last item in the node. This is for use with btrfs_next_leaf, which needs this sort of thing. But the horrible horrible things I'm going to do to the tree log means I really need everything held from root to leaf so I can add and delete items in the same search. Thanks, 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: don't bother copying if we're only logging the inodeJosef Bacik2012-12-16
| | | | | | | | | | | | | | | | | | | | We don't copy inode items anwyay, we just copy them straight into the log from the in memory inode. So if we know we're only logging the inode, don't bother dropping anything, just try to insert it and either if it succeeds or we get EEXIST we can update the inode item in the log and carry on. 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: rename root_times_lock to root_item_lockAnand Jain2012-12-16
| | | | | | | | | | | | | | | | | | Originally root_times_lock was introduced as part of send/receive code however newly developed patch to label the subvol reused the same lock, so renaming it for a meaningful name. Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * btrfs: Notify udev when removing deviceLukas Czerner2012-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently udev does not know about the device being removed from the file system. This may result in the situation where we're unable to mount the file system by UUID or by LABEL because the by-uuid and by-label links may still point to the device which is no longer part of the btrfs file system and hence does not have any btrfs super block. It can be easily reproduced by the following: mkfs.btrfs -L bugfs /dev/loop[0-6] mount /dev/loop0 /mnt/test btrfs device delete /dev/loop0 /mnt/test umount /mnt/test mount LABEL=bugfs /mnt/test <---- this fails then see: ls -l /dev/disk/by-label/bugfs which will still point to the /dev/loop0 We did not noticed this before because libblkid would send the udev event for us when it notice that the link does not fit the reality, however it does not do that anymore and completely relies on udev information. Fix this by sending the KOBJ_CHANGE event to the bdev kobject after successful device removal. Note that this does not affect device addition, because we will open the device prior the addition from userspace and udev will notice that and reread the device afterwards. Signed-off-by: Lukas Czerner <lczerner@redhat.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: punch hole past the end of the fileMiao Xie2012-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | Since we can pre-allocate the space past EOF, we should be able to reclaim that space if we need. This patch implements it by removing the EOF check. Though the manual of fallocate command says we can use truncate command to reclaim the pre-allocated space which past EOF, but because truncate command changes the file size, we must run several commands to reclaim the space if we don't want to change the file size, so it is not a good choice. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: fix the page that is beyond EOFMiao Xie2012-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Steps to reproduce: # mkfs.btrfs <disk> # mount <disk> <mnt> # dd if=/dev/zero of=<mnt>/<file> bs=512 seek=5 count=8 # fallocate -p -o 2048 -l 16384 <mnt>/<file> # dd if=/dev/zero of=<mnt>/<file> bs=4096 seek=3 count=8 conv=notrunc,nocreat # umount <mnt> # dmesg WARNING: at fs/btrfs/inode.c:7140 btrfs_destroy_inode+0x2eb/0x330 The reason is that we inputed a range which is beyond the end of the file. And because the end of this range was not page-aligned, we had to truncate the last page in this range, this operation is similar to a buffered file write. In other words, we reserved enough space and clear the data which was in the hole range on that page. But when we expanded that test file, write the data into the same page, we forgot that we have reserved enough space for the buffered write of that page because in most cases there is no page that is beyond the end of the file. As a result, we reserved the space twice. In fact, we needn't truncate the page if it is beyond the end of the file, just release the allocated space in that range. Fix the above problem by this way. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: fix off-by-one error of the same page check in btrfs_punch_hole()Miao Xie2012-12-16
| | | | | | | | | | | | | | | | (start + len) is the start of the adjacent extent, not the end of the current extent, so we should not use it to check the hole is on the same page or not. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: fix missing reserved space release in error path of delalloc reservationMiao Xie2012-12-16
| | | | | | | | | | | | | | | | We forget to release the reserved space in the error path of delalloc reservatiom, 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: use ctl->unit for free space calculation instead of ↵Wang Sheng-Hui2012-12-16
| | | | | | | | | | | | | | | | | | | | block_group->sectorsize We should use ctl->unit for free space calculation instead of block_group->sectorsize even though for free space use_bitmap or free space cluster we only have sectorsize assigned to ctl->unit currently. Also, we can keep it consisten in code style. Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.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: don't add a NULL extended attributeLiu Bo2012-12-16
| | | | | | | | | | | | | | | | Passing a null extended attribute value means to remove the attribute, but we don't have to add a new NULL extended attribute. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: skip adding an acl attribute if we don't have toLiu Bo2012-12-16
| | | | | | | | | | | | | | | | If the acl can be exactly represented in the traditional file mode permission bits, we don't set another acl attribute. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: fix off-by-one error of the reserved size of btrfs_allocate()Miao Xie2012-12-16
| | | | | | | | | | | | | | | | | | | | alloc_end is not the real end of the current extent, it is the start of the next adjoining extent. So we needn't +1 when calculating the size the space that is about to be reserved. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: use existing align macros in btrfs_allocate()Miao Xie2012-12-16
| | | | | | | | | | | | | | | | The kernel developers have implemented some often-used align macros, we should use them instead of the complex code. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: fix a scrub regression in case of write errorsStefan Behrens2012-12-16
| | | | | | | | | | | | | | | | | | | | This regression was introduced by the device-replace patches. Scrub immediately stops checking those disks that have write errors. This is nothing that happens in the real world, but it is wrong since scrub is the tool to detect and repair defects. Fix it. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: fix a build warning for an unused labelStefan Behrens2012-12-16
| | | | | | | | | | | | | | | | | | | | This issue was detected by the "0-DAY kernel build testing". fs/btrfs/volumes.c: In function 'btrfs_rm_device': fs/btrfs/volumes.c:1505:1: warning: label 'error_close' defined but not used [-Wunused-label] Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: fix race in check-integrity caused by usage of bitfieldStefan Behrens2012-12-16
| | | | | | | | | | | | | | | | | | | | | | | | The structure member mirror_num is modified concurrently to the structure member is_iodone. This doesn't require any locking by design, unless everything is stored in the same 32 bits of a bit field. This was the case and xfstest 284 was able to trigger false warnings from the checker code. This patch seperates the bits and fixes the race. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: fix freeze vs auto defragMiao Xie2012-12-16
| | | | | | | | | | | | | | If we freeze the fs, the auto defragment should not run. Fix it. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: restructure btrfs_run_defrag_inodes()Miao Xie2012-12-16
| | | | | | | | | | | | | | | | This patch restructure btrfs_run_defrag_inodes() and make the code of the auto defragment more readable. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: fix unprotected defragable inode insertionMiao Xie2012-12-16
| | | | | | | | | | | | | | | | We forget to get the defrag lock when we re-add the defragable inode, Fix it. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| * Btrfs: use slabs for auto defrag allocationMiao Xie2012-12-16
| | | | | | | | | | | | | | | | | | | | The auto defrag allocation is in the fast path of the IO, so use slabs to improve the speed of the allocation. And besides that, it can do check for leaked objects when the module is removed. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-27 04:17:46 -0500