From 9dd14fd6964e6db02346d5f472f915029728b8cf Mon Sep 17 00:00:00 2001 From: Edmund Nadolski Date: Wed, 12 Jul 2017 16:20:09 -0600 Subject: [PATCH] btrfs: add cond_resched() calls when resolving backrefs Since backref resolution is CPU-intensive, the cond_resched calls should help alleviate soft lockup occurences. Signed-off-by: Edmund Nadolski Signed-off-by: Jeff Mahoney Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/backref.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 4cda81964dd4..9593102bdc2c 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -660,6 +660,7 @@ static int resolve_indirect_refs(struct btrfs_fs_info *fs_info, prelim_ref_insert(fs_info, &preftrees->direct, ref); ulist_reinit(parents); + cond_resched(); } out: ulist_free(parents); @@ -702,6 +703,7 @@ static int add_missing_keys(struct btrfs_fs_info *fs_info, btrfs_tree_read_unlock(eb); free_extent_buffer(eb); prelim_ref_insert(fs_info, &preftrees->indirect, ref); + cond_resched(); } return 0; } @@ -1243,6 +1245,7 @@ again: } eie = NULL; } + cond_resched(); } out: -- 2.11.0