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authorMikulas Patocka <mpatocka@redhat.com>2013-11-01 18:27:41 -0400
committerMike Snitzer <snitzer@redhat.com>2013-11-09 18:20:22 -0500
commit2c140a246dc0bc085b98eddde978060fcec1080c (patch)
tree73d747f4422fe202868495d08ea5d189bc16bd79 /drivers/hwmon/adcxx.c
parent7833b08e18241a1c35c09ef38be840cbf6c58acf (diff)
dm: allow remove to be deferred
This patch allows the removal of an open device to be deferred until it is closed. (Previously such a removal attempt would fail.) The deferred remove functionality is enabled by setting the flag DM_DEFERRED_REMOVE in the ioctl structure on DM_DEV_REMOVE or DM_REMOVE_ALL ioctl. On return from DM_DEV_REMOVE, the flag DM_DEFERRED_REMOVE indicates if the device was removed immediately or flagged to be removed on close - if the flag is clear, the device was removed. On return from DM_DEV_STATUS and other ioctls, the flag DM_DEFERRED_REMOVE is set if the device is scheduled to be removed on closure. A device that is scheduled to be deleted can be revived using the message "@cancel_deferred_remove". This message clears the DMF_DEFERRED_REMOVE flag so that the device won't be deleted on close. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/hwmon/adcxx.c')
0 files changed, 0 insertions, 0 deletions