diff options
| author | Alasdair G Kergon <agk@redhat.com> | 2006-01-06 00:20:07 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:34:01 -0800 |
| commit | 6da487dcc0c6f4c827779687a20016efeffc4d60 (patch) | |
| tree | 824d14e18cbb81bf45c6d17104993acfa47c9c36 /include/linux/dm-ioctl.h | |
| parent | aa8d7c2fbe619d8c0837296d2eaf4c14cebac198 (diff) | |
| download | lwn-6da487dcc0c6f4c827779687a20016efeffc4d60.tar.gz lwn-6da487dcc0c6f4c827779687a20016efeffc4d60.zip | |
[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/linux/dm-ioctl.h')
| -rw-r--r-- | include/linux/dm-ioctl.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h index f5eb6b6cd109..fa75ba0d635e 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 */ |