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    Subject[PATCH 3.4 36/37] Btrfs: handle EAGAIN case properly in btrfs_drop_snapshot()
    Date
    3.4-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Wang Shilong <wangsl.fnst@cn.fujitsu.com>

    commit 90515e7f5d7d24cbb2a4038a3f1b5cfa2921aa17 upstream.

    We may return early in btrfs_drop_snapshot(), we shouldn't
    call btrfs_std_err() for this case, fix it.

    Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
    Signed-off-by: Josef Bacik <jbacik@fb.com>
    Signed-off-by: Chris Mason <clm@fb.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/btrfs/extent-tree.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/fs/btrfs/extent-tree.c
    +++ b/fs/btrfs/extent-tree.c
    @@ -7033,7 +7033,7 @@ out:
    */
    if (root_dropped == false)
    btrfs_add_dead_root(root);
    - if (err)
    + if (err && err != -EAGAIN)
    btrfs_std_error(root->fs_info, err);
    return err;
    }



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