[PATCH v1 11/54] md: set NO_MP for request queue of md
From: Ming Lei <tom.leiming@gmail.com>
Date: 2016-12-27 16:01:10
Also in:
linux-block, lkml
Subsystem:
software raid (multiple disks) support, the rest · Maintainers:
Song Liu, Yu Kuai, Linus Torvalds
MD isn't ready for multipage bvecs, so mark it as NO_MP. Signed-off-by: Ming Lei <tom.leiming@gmail.com> --- drivers/md/md.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 82821ee0d57f..63c6326bafde 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c@@ -5162,6 +5162,16 @@ static void md_safemode_timeout(unsigned long data) static int start_dirty_degraded; +/* + * MD isn't ready for multipage bvecs yet, and set the flag + * so that MD still can see singlepage bvecs bio + */ +static inline void md_set_no_mp(struct mddev *mddev) +{ + if (mddev->queue) + set_bit(QUEUE_FLAG_NO_MP, &mddev->queue->queue_flags); +} + int md_run(struct mddev *mddev) { int err;
@@ -5381,6 +5391,8 @@ int md_run(struct mddev *mddev) if (mddev->sb_flags) md_update_sb(mddev, 0); + md_set_no_mp(mddev); + md_new_event(mddev); sysfs_notify_dirent_safe(mddev->sysfs_state); sysfs_notify_dirent_safe(mddev->sysfs_action);
--
2.7.4