From 976b1908d97bd8cbd024ba7aafaa3fb637ea8e13 Mon Sep 17 00:00:00 2001 From: Jan Schmidt Date: Thu, 17 May 2012 16:43:03 +0200 Subject: Btrfs: look into the extent during find_all_leafs Before this patch we called find_all_leafs for a data extent, then called find_all_roots and then looked into the extent to grab the information we were seeking. This was done without holding the leaves locked to avoid deadlocks. However, this can obviouly race with concurrent tree modifications. Instead, we now look into the extent while we're holding the lock during find_all_leafs and store this information together with the leaf list. Signed-off-by: Jan Schmidt --- fs/btrfs/backref.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/btrfs/backref.h') diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h index 57ea2e959e4d..94ba1b2e733b 100644 --- a/fs/btrfs/backref.h +++ b/fs/btrfs/backref.h @@ -58,7 +58,7 @@ int paths_from_inode(u64 inum, struct inode_fs_paths *ipath); int btrfs_find_all_roots(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info, u64 bytenr, - u64 num_bytes, u64 seq, struct ulist **roots); + u64 seq, struct ulist **roots); struct btrfs_data_container *init_data_container(u32 total_bytes); struct inode_fs_paths *init_ipath(s32 total_bytes, struct btrfs_root *fs_root, -- cgit v1.2.3