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    Subject[PATCH 5.13 057/800] ext4: remove check for zero nr_to_scan in ext4_es_scan()
    Date
    From: Zhang Yi <yi.zhang@huawei.com>

    commit e5e7010e5444d923e4091cafff61d05f2d19cada upstream.

    After converting fs shrinkers to new scan/count API, we are no longer
    pass zero nr_to_scan parameter to detect the number of objects to free,
    just remove this check.

    Fixes: 1ab6c4997e04 ("fs: convert fs shrinkers to new scan/count API")
    Cc: stable@vger.kernel.org # 3.12+
    Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
    Reviewed-by: Jan Kara <jack@suse.cz>
    Link: https://lore.kernel.org/r/20210522103045.690103-2-yi.zhang@huawei.com
    Signed-off-by: Theodore Ts'o <tytso@mit.edu>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/ext4/extents_status.c | 3 ---
    1 file changed, 3 deletions(-)

    --- a/fs/ext4/extents_status.c
    +++ b/fs/ext4/extents_status.c
    @@ -1574,9 +1574,6 @@ static unsigned long ext4_es_scan(struct
    ret = percpu_counter_read_positive(&sbi->s_es_stats.es_stats_shk_cnt);
    trace_ext4_es_shrink_scan_enter(sbi->s_sb, nr_to_scan, ret);

    - if (!nr_to_scan)
    - return ret;
    -
    nr_shrunk = __es_shrink(sbi, nr_to_scan, NULL);

    ret = percpu_counter_read_positive(&sbi->s_es_stats.es_stats_shk_cnt);

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