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authorBart Van Assche <bart.vanassche@wdc.com>2018-06-16 00:55:21 +0300
committerJens Axboe <axboe@kernel.dk>2018-07-09 18:07:52 +0300
commit6a5ac9846508ad7d1d23881d9d5add35f2e6ae71 (patch)
treec0386ecdda510c941829913bba55aa68085a92b3 /block/blk-mq-debugfs.h
parent7c8542b7982264226cf94102950343185869b584 (diff)
downloadlinux-6a5ac9846508ad7d1d23881d9d5add35f2e6ae71.tar.xz
block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n
Exclude zoned block device members from struct request_queue for CONFIG_BLK_DEV_ZONED == n. Avoid breaking the build by only building the code that uses these struct request_queue members if CONFIG_BLK_DEV_ZONED != n. Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Cc: Matias Bjorling <mb@lightnvm.io> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq-debugfs.h')
-rw-r--r--block/blk-mq-debugfs.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/block/blk-mq-debugfs.h b/block/blk-mq-debugfs.h
index b9d366e57097..a9160be12be0 100644
--- a/block/blk-mq-debugfs.h
+++ b/block/blk-mq-debugfs.h
@@ -80,4 +80,13 @@ static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hc
}
#endif
+#ifdef CONFIG_BLK_DEBUG_FS_ZONED
+int queue_zone_wlock_show(void *data, struct seq_file *m);
+#else
+static inline int queue_zone_wlock_show(void *data, struct seq_file *m)
+{
+ return 0;
+}
+#endif
+
#endif