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authorAlasdair G Kergon <agk@redhat.com>2006-01-06 00:20:07 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:34:01 -0800
commit6da487dcc0c6f4c827779687a20016efeffc4d60 (patch)
tree824d14e18cbb81bf45c6d17104993acfa47c9c36 /include
parentaa8d7c2fbe619d8c0837296d2eaf4c14cebac198 (diff)
downloadop-kernel-dev-6da487dcc0c6f4c827779687a20016efeffc4d60.zip
op-kernel-dev-6da487dcc0c6f4c827779687a20016efeffc4d60.tar.gz
[PATCH] device-mapper ioctl: add skip lock_fs flag
Add ioctl DM_SKIP_LOCKFS_FLAG for userspace to request that lock_fs is bypassed when suspending a device. There's no change to the behaviour of existing code that doesn't know about the new flag. 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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/dm-ioctl.h11
1 files changed, 8 insertions, 3 deletions
diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h
index f5eb6b6..fa75ba0 100644
--- a/include/linux/dm-ioctl.h
+++ b/include/linux/dm-ioctl.h
@@ -272,9 +272,9 @@ typedef char ioctl_struct[308];
#define DM_TARGET_MSG _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl)
#define DM_VERSION_MAJOR 4
-#define DM_VERSION_MINOR 4
+#define DM_VERSION_MINOR 5
#define DM_VERSION_PATCHLEVEL 0
-#define DM_VERSION_EXTRA "-ioctl (2005-01-12)"
+#define DM_VERSION_EXTRA "-ioctl (2005-10-04)"
/* Status bits */
#define DM_READONLY_FLAG (1 << 0) /* In/Out */
@@ -301,8 +301,13 @@ typedef char ioctl_struct[308];
#define DM_BUFFER_FULL_FLAG (1 << 8) /* Out */
/*
- * Set this to improve performance when you aren't going to use open_count
+ * Set this to improve performance when you aren't going to use open_count.
*/
#define DM_SKIP_BDGET_FLAG (1 << 9) /* In */
+/*
+ * Set this to avoid attempting to freeze any filesystem when suspending.
+ */
+#define DM_SKIP_LOCKFS_FLAG (1 << 10) /* In */
+
#endif /* _LINUX_DM_IOCTL_H */
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