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md: export helper md_is_rdwr()

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There are no functional changes for now, prepare to fix a deadlock for
dm-raid456.

Cc: stable@vger.kernel.org # v6.7+
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Xiao Ni <xni@redhat.com>
Acked-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20240305072306.2562024-4-yukuai1@huaweicloud.com
This commit is contained in:
Yu Kuai 2024-03-05 15:23:00 +08:00 • committed by Song Liu
parent 7a2347e284
commit 314e9af065
2 changed files with 12 additions and 12 deletions
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12
drivers/md/md.c
View file

@ -99,18 +99,6 @@ static void mddev_detach(struct mddev *mddev);
static void export_rdev(struct md_rdev *rdev, struct mddev *mddev);
static void md_wakeup_thread_directly(struct md_thread __rcu *thread);
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
* before ejecting it from the array. We divide the read error

12
drivers/md/md.h
View file

@ -569,6 +569,18 @@ enum recovery_flags {
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 int __must_check mddev_lock(struct mddev *mddev)
{
return mutex_lock_interruptible(&mddev->reconfig_mutex);