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md: export md_is_rdwr() and is_md_suspended() 

The two apis will be used later to fix a deadlock in raid456, there are
no functional changes.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230512015610.821290-4-yukuai1@huaweicloud.com
This commit is contained in:
Yu Kuai 2023-05-12 09:56:08 +08:00 committed by Song Liu
parent 873f50ece4
commit 431e61257d
2 changed files with 17 additions and 16 deletions
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16
drivers/md/md.c
View File

@ -93,18 +93,6 @@ static int remove_and_add_spares(struct mddev *mddev,
struct md_rdev *this); struct md_rdev *this);
static void mddev_detach(struct mddev *mddev); static void mddev_detach(struct mddev *mddev);
enum md_ro_state {
MD_RDWR,
MD_RDONLY,
MD_AUTO_READ,
MD_MAX_STATE
};
static bool md_is_rdwr(struct mddev *mddev)
{
return (mddev->ro == MD_RDWR);
}
/* /*
* Default number of read corrections we'll attempt on an rdev * Default number of read corrections we'll attempt on an rdev
* before ejecting it from the array. We divide the read error * before ejecting it from the array. We divide the read error
@ -360,10 +348,6 @@ EXPORT_SYMBOL_GPL(md_new_event);
static LIST_HEAD(all_mddevs); static LIST_HEAD(all_mddevs);
static DEFINE_SPINLOCK(all_mddevs_lock); static DEFINE_SPINLOCK(all_mddevs_lock);
static bool is_md_suspended(struct mddev *mddev)
{
return percpu_ref_is_dying(&mddev->active_io);
}
/* Rather than calling directly into the personality make_request function, /* Rather than calling directly into the personality make_request function,
* IO requests come here first so that we can check if the device is * IO requests come here first so that we can check if the device is
* being suspended pending a reconfiguration. * being suspended pending a reconfiguration.

17
drivers/md/md.h
View File

@ -555,6 +555,23 @@ enum recovery_flags {
MD_RESYNCING_REMOTE, /* remote node is running resync thread */ MD_RESYNCING_REMOTE, /* remote node is running resync thread */
}; };
enum md_ro_state {
MD_RDWR,
MD_RDONLY,
MD_AUTO_READ,
MD_MAX_STATE
};
static inline bool md_is_rdwr(struct mddev *mddev)
{
return (mddev->ro == MD_RDWR);
}
static inline bool is_md_suspended(struct mddev *mddev)
{
return percpu_ref_is_dying(&mddev->active_io);
}
static inline int __must_check mddev_lock(struct mddev *mddev) static inline int __must_check mddev_lock(struct mddev *mddev)
{ {
return mutex_lock_interruptible(&mddev->reconfig_mutex); return mutex_lock_interruptible(&mddev->reconfig_mutex);