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| author | Yu Kuai <yukuai3@huawei.com> | 2024-03-05 15:23:00 +0800 |
|---|---|---|
| committer | Song Liu <song@kernel.org> | 2024-03-05 12:53:32 -0800 |
| commit | 314e9af065513ff86ec9e32eaa96b9bd275cf51d (patch) | |
| tree | c09c8f5c5ad861c1eb5f309fb661bcce7a0cda38 /drivers/md/md.h | |
| parent | 7a2347e284d7ec2f0759be4db60fa7ca937284fc (diff) | |
| download | linux-314e9af065513ff86ec9e32eaa96b9bd275cf51d.tar.gz linux-314e9af065513ff86ec9e32eaa96b9bd275cf51d.tar.bz2 linux-314e9af065513ff86ec9e32eaa96b9bd275cf51d.zip | |
md: export helper md_is_rdwr()
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
Diffstat (limited to 'drivers/md/md.h')
| -rw-r--r-- | drivers/md/md.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h index dff2e333756d..a40e898fe57e 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -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); |