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authorEdmund Nadolski <enadolski@suse.com>2017-07-12 16:20:09 -0600
committerDavid Sterba <dsterba@suse.com>2017-08-16 16:12:01 +0200
commit9dd14fd6964e6db02346d5f472f915029728b8cf (patch)
treed75a9264eb13a4ded20aa652d98824bb38bb4251 /fs/btrfs/backref.c
parent00142756e1f8015d2f8ce96532d156689db7e448 (diff)
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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 <enadolski@suse.com> Signed-off-by: Jeff Mahoney <jeffm@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/backref.c')
-rw-r--r--fs/btrfs/backref.c3
1 files changed, 3 insertions, 0 deletions
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: