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dm ioctl: introduce flag indicating uevent was generated

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Set a new DM_UEVENT_GENERATED_FLAG when returning from ioctls to
indicate that a uevent was actually generated.  This tells the userspace
caller that it may need to wait for the event to be processed.

Signed-off-by: Peter Rajnoha <prajnoha@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Peter Rajnoha
2010-03-06 02:32:31 +00:00
committed by Alasdair G Kergon
parent a97f925a32
commit 3abf85b5b5
4 changed files with 25 additions and 14 deletions
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4
drivers/md/dm.h
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@@ -125,8 +125,8 @@ void dm_stripe_exit(void);
int dm_open_count(struct mapped_device *md);
int dm_lock_for_deletion(struct mapped_device *md);
void dm_kobject_uevent(struct mapped_device *md, enum kobject_action action,
unsigned cookie);
int dm_kobject_uevent(struct mapped_device *md, enum kobject_action action,
unsigned cookie);
int dm_io_init(void);
void dm_io_exit(void);