From f248679e86fead40cc78e724c7181d6bec1a2046 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 13 Jan 2012 12:09:22 -0500 Subject: Btrfs: add a delalloc mutex to inodes for delalloc reservations I was using i_mutex for this, but we're getting bogus lockdep warnings by doing that and theres no real way to get rid of those, so just stop using i_mutex to protect delalloc metadata reservations and use a delalloc mutex instead. This shouldn't be contended often at all, only if you are writing and mmap writing to the file at the same time. Thanks, Signed-off-by: Josef Bacik --- fs/btrfs/btrfs_inode.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/btrfs/btrfs_inode.h') diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h index 634608d2a6d0..9b9b15fd5204 100644 --- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -51,6 +51,9 @@ struct btrfs_inode { /* held while logging the inode in tree-log.c */ struct mutex log_mutex; + /* held while doing delalloc reservations */ + struct mutex delalloc_mutex; + /* used to order data wrt metadata */ struct btrfs_ordered_inode_tree ordered_tree; -- cgit v1.2.3