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[PATCH] dm table: add target preresume

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This patch adds a target preresume hook.

It is called before the targets are resumed and if it returns an error the
resume gets cancelled.

The crypt target will use this to indicate that it is unable to process I/O
because no encryption key has been supplied.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Milan Broz
2006-10-03 01:15:36 -07:00
committed by Linus Torvalds
parent cc1092019c
commit 8757b7764f
5 changed files with 23 additions and 6 deletions
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4
include/linux/dm-ioctl.h
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@@ -285,9 +285,9 @@ typedef char ioctl_struct[308];
#define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
#define DM_VERSION_MAJOR 4
#define DM_VERSION_MINOR 8
#define DM_VERSION_MINOR 9
#define DM_VERSION_PATCHLEVEL 0
#define DM_VERSION_EXTRA "-ioctl (2006-06-24)"
#define DM_VERSION_EXTRA "-ioctl (2006-09-14)"
/* Status bits */
#define DM_READONLY_FLAG (1 << 0) /* In/Out */