[PATCH 24/60] md: set NO_MP for request queue of md
From: Ming Lei <tom.leiming@gmail.com>
Date: 2016-10-29 08:08:23
Also in:
linux-fsdevel, linux-raid, 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 eac84d8ff724..f8d98098dff8 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c@@ -5128,6 +5128,16 @@ 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;
@@ -5353,6 +5363,8 @@ int md_run(struct mddev *mddev) if (mddev->flags & MD_UPDATE_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