[PATCH v2 2/3] dm: Export function dm_suspend_md()
From: Pali Rohár <hidden>
Date: 2015-06-21 11:22:04
Also in:
dm-devel, linux-pm, lkml
Subsystem:
device-mapper (lvm), the rest · Maintainers:
Alasdair Kergon, Mike Snitzer, Mikulas Patocka, Benjamin Marzinski, Linus Torvalds
This patch exports function dm_suspend_md() which suspend mapped device so other kernel drivers can use it and could suspend mapped device when needed. Signed-off-by: Pali Rohár <redacted> --- drivers/md/dm.c | 6 ++++++ drivers/md/dm.h | 5 +++++ 2 files changed, 11 insertions(+)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 2caf492..03298ff 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c@@ -3343,6 +3343,12 @@ out: return r; } +int dm_suspend_md(struct mapped_device *md) +{ + return dm_suspend(md, DM_SUSPEND_LOCKFS_FLAG); +} +EXPORT_SYMBOL_GPL(dm_suspend_md); + /* * Internal suspend/resume works like userspace-driven suspend. It waits * until all bios finish and prevents issuing new bios to the target drivers.
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index 6123c2b..528e5e0 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h@@ -151,6 +151,11 @@ int dm_test_deferred_remove_flag(struct mapped_device *md); void dm_deferred_remove(void); /* + * Suspend mapped_device + */ +int dm_suspend_md(struct mapped_device *md); + +/* * The device-mapper can be driven through one of two interfaces; * ioctl or filesystem, depending which patch you have applied. */
--
1.7.9.5
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