linux/fs/btrfs, branch v3.7.2

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

2012-10-26T16:34:04Z

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: do not bug when we fail to commit the transaction

2012-10-25T19:59:57Z

We BUG if we fail to commit the transaction when creating a snapshot, which is just obnoxious. Remove the BUG_ON(). Thanks, Signed-off-by: Josef Bacik

Btrfs: fix memory leak when cloning root's node

2012-10-25T19:55:21Z

After cloning root's node, we forgot to dec the src's ref which can lead to a memory leak. Signed-off-by: Liu Bo Signed-off-by: Chris Mason

Merge branch 'for-chris-fixed' of git://git.jan-o-sch.net/btrfs-unstable

2012-10-25T19:53:10Z

Btrfs: Use btrfs_update_inode_fallback when creating a snapshot

2012-10-25T19:50:18Z

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

Btrfs: Send: preserve ownership (uid and gid) also for symlinks.

2012-10-25T19:47:31Z

This patch also requires a change in the user-space part of "receive". We need to use "lchown" instead of "chown". We will do this in the following patch. Signed-off-by: Alex Lyakas if (S_ISREG(sctx->cur_inode_mode)) {

Btrfs: fix deadlock caused by the nested chunk allocation

2012-10-25T19:47:00Z

Steps to reproduce: # mkfs.btrfs -m raid1 # btrfstune -S 1 # mount # btrfs device add # mount -o remount,rw # dd if=/dev/zero of=/tmpfile bs=1M count=1 Deadlock happened. It is because of the nested chunk allocation. When we wrote the data into the filesystem, we would allocate the data chunk because there was no data chunk in the filesystem. At the end of the data chunk allocation, we should insert the metadata of the data chunk into the extent tree, but there was no raid1 chunk, so we tried to lock the chunk allocation mutex to allocate the new chunk, but we had held the mutex, the deadlock happened. By rights, we would allocate the raid1 chunk when we added the second device because the profile of the seed filesystem is raid1 and we had two devices. But we didn't do that in fact. It is because the last step of the first device insertion didn't commit the transaction. So when we added the second device, we didn't cow the tree, and just inserted the relative metadata into the leaves which were generated by the first device insertion, and its profile was dup. So, I fix this problem by commiting the transaction at the end of the first device insertion. Signed-off-by: Miao Xie

btrfs: Return EINVAL when length to trim is less than FSB

2012-10-25T19:46:22Z

Currently if len argument in btrfs_ioctl_fitrim() is smaller than one FSB we will continue and finally return 0 bytes discarded. However if the length to discard is smaller then file system block we should really return EINVAL. Signed-off-by: Lukas Czerner

Btrfs: fix memory leak in btrfs_quota_enable()

2012-10-25T19:45:43Z

We should free quota_root before returning from the error handling code. Signed-off-by: Tsutomu Itoh

Btrfs: send correct rdev and mode in btrfs-send

2012-10-25T19:45:25Z

When sending a device file, the stream was missing the mode. Also the rdev was encoded wrongly. Signed-off-by: Arne Jansen