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    Subject[PATCH 4.2.y-ckt 070/268] bcache: Add a cond_resched() call to gc
    Date
    4.2.8-ckt3 -stable review patch.  If anyone has any objections, please let me know.

    ---8<------------------------------------------------------------

    From: Kent Overstreet <kmo@daterainc.com>

    commit c5f1e5adf956e3ba82d204c7c141a75da9fa449a upstream.

    Signed-off-by: Takashi Iwai <tiwai@suse.de>
    Tested-by: Eric Wheeler <bcache@linux.ewheeler.net>
    Cc: Kent Overstreet <kmo@daterainc.com>
    Signed-off-by: Jens Axboe <axboe@fb.com>
    Signed-off-by: Kamal Mostafa <kamal@canonical.com>
    ---
    drivers/md/bcache/btree.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
    index 9aaa8f8..43829d9 100644
    --- a/drivers/md/bcache/btree.c
    +++ b/drivers/md/bcache/btree.c
    @@ -1741,6 +1741,7 @@ static void bch_btree_gc(struct cache_set *c)
    do {
    ret = btree_root(gc_root, c, &op, &writes, &stats);
    closure_sync(&writes);
    + cond_resched();

    if (ret && ret != -EAGAIN)
    pr_warn("gc failed!");
    --
    1.9.1
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