search for: i_mutex_parent

...- if (src == inode) - goto out_fput; /* the src must be open for reading */ if (!(src_file->f_mode & FMODE_READ)) @@ -2282,9 +2278,11 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd, if (inode < src) { mutex_lock_nested(&inode->i_mutex, I_MUTEX_PARENT); mutex_lock_nested(&src->i_mutex, I_MUTEX_CHILD); - } else { + } else if (inode > src) { mutex_lock_nested(&src->i_mutex, I_MUTEX_PARENT); mutex_lock_nested(&inode->i_mutex, I_MUTEX_CHILD); + } else { + mutex_lock(&inode->i_mutex); } /* determine rang...

...68,9 @@ static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe, out->f_path.dentry->d_name.len, out->f_path.dentry->d_name.name, len); + if (!sb_start_file_write(out)) + return -EAGAIN; + if (pipe->inode) mutex_lock_nested(&pipe->inode->i_mutex, I_MUTEX_PARENT); @@ -2506,6 +2509,7 @@ static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe, balance_dirty_pages_ratelimited(mapping); } + sb_end_write(inode->i_sb); return ret; } -- 1.7.1

Hi, The following series of patches implements in btrfs an ioctl to do out-of-band deduplication of file extents. To be clear, this means that the file system is mounted and running, but the dedupe is not done during file writes, but after the fact when some userspace software initiates a dedupe. The primary patch is loosely based off of one sent by Josef Bacik back in January, 2011.

Signed-off-by: Tiger Yang <tiger.yang at oracle.com> --- Config.make.in | 1 + configure.in | 6 ++++++ fs/ocfs2/Makefile | 4 ++++ kapi-compat/include/pipe_buf_operations.h | 10 ++++++++++ 4 files changed, 21 insertions(+), 0 deletions(-) create mode 100644 kapi-compat/include/pipe_buf_operations.h

...86,9 @@ static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe, out->f_path.dentry->d_name.len, out->f_path.dentry->d_name.name, len); + if (!sb_start_file_write(out)) + return -EAGAIN; + if (pipe->inode) mutex_lock_nested(&pipe->inode->i_mutex, I_MUTEX_PARENT); @@ -2527,6 +2530,7 @@ static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe, balance_dirty_pages_ratelimited_nr(mapping, nr_pages); } + sb_end_write(inode->i_sb); return ret; } -- 1.7.1

I'm running a bit late with the e-mail this time around, but I think that's ok since there really isn't any major new features here - the bulk of the Ocfs2 update is bug fixes, or cleanups. The same goes for configfs. The only two things that could be described as features would be: - Sunil has updated Ocfs2 to provide even more live cluster locking information via debugfs. - Joel