diff options
| author | Kiyoshi Ueda <k-ueda@ct.jp.nec.com> | 2006-12-08 02:41:04 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 08:29:09 -0800 |
| commit | a3d77d35be6f416a250c528c3ed5c70013a915e8 (patch) | |
| tree | 6aaecdf78b4da52f8a3b3ded2bd320812e3db6df | |
| parent | 74859364633963cb660c4fa518adca9ab1ca4229 (diff) | |
[PATCH] dm: suspend: parameter change
Change the interface of dm_suspend() so that we can pass several options
without increasing the number of parameters. The existing 'do_lockfs' integer
parameter is replaced by a flag DM_SUSPEND_LOCKFS_FLAG.
There is no functional change to the code.
Test results:
I have tested 'dmsetup suspend' command with/without the '--nolockfs'
option and confirmed the do_lockfs value is correctly set.
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: dm-devel@redhat.com
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/md/dm-ioctl.c | 12 | ||||
| -rw-r--r-- | drivers/md/dm.c | 3 | ||||
| -rw-r--r-- | drivers/md/dm.h | 5 | ||||
| -rw-r--r-- | include/linux/device-mapper.h | 2 |
4 files changed, 14 insertions, 8 deletions
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index 4510ad8f971..6d7a3d0c8f8 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -765,7 +765,7 @@ out: static int do_suspend(struct dm_ioctl *param) { int r = 0; - int do_lockfs = 1; + unsigned suspend_flags = DM_SUSPEND_LOCKFS_FLAG; struct mapped_device *md; md = find_device(param); @@ -773,10 +773,10 @@ static int do_suspend(struct dm_ioctl *param) return -ENXIO; if (param->flags & DM_SKIP_LOCKFS_FLAG) - do_lockfs = 0; + suspend_flags &= ~DM_SUSPEND_LOCKFS_FLAG; if (!dm_suspended(md)) - r = dm_suspend(md, do_lockfs); + r = dm_suspend(md, suspend_flags); if (!r) r = __dev_status(md, param); @@ -788,7 +788,7 @@ static int do_suspend(struct dm_ioctl *param) static int do_resume(struct dm_ioctl *param) { int r = 0; - int do_lockfs = 1; + unsigned suspend_flags = DM_SUSPEND_LOCKFS_FLAG; struct hash_cell *hc; struct mapped_device *md; struct dm_table *new_map; @@ -814,9 +814,9 @@ static int do_resume(struct dm_ioctl *param) if (new_map) { /* Suspend if it isn't already suspended */ if (param->flags & DM_SKIP_LOCKFS_FLAG) - do_lockfs = 0; + suspend_flags &= ~DM_SUSPEND_LOCKFS_FLAG; if (!dm_suspended(md)) - dm_suspend(md, do_lockfs); + dm_suspend(md, suspend_flags); r = dm_swap_table(md, new_map); if (r) { diff --git a/drivers/md/dm.c b/drivers/md/dm.c index dd50e30b6dc..b42e71bb9e6 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1272,12 +1272,13 @@ static void unlock_fs(struct mapped_device *md) * dm_bind_table, dm_suspend must be called to flush any in * flight bios and ensure that any further io gets deferred. */ -int dm_suspend(struct mapped_device *md, int do_lockfs) +int dm_suspend(struct mapped_device *md, unsigned suspend_flags) { struct dm_table *map = NULL; DECLARE_WAITQUEUE(wait, current); struct bio *def; int r = -EINVAL; + int do_lockfs = suspend_flags & DM_SUSPEND_LOCKFS_FLAG ? 1 : 0; down(&md->suspend_lock); diff --git a/drivers/md/dm.h b/drivers/md/dm.h index a48ec5e3c1f..81c98d6e35e 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -33,6 +33,11 @@ #define SECTOR_SHIFT 9 /* + * Suspend feature flags + */ +#define DM_SUSPEND_LOCKFS_FLAG (1 << 0) + +/* * List of devices that a metadevice uses and should open/close. */ struct dm_dev { diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 03ef41c1eaa..9194ff2d08c 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -173,7 +173,7 @@ void *dm_get_mdptr(struct mapped_device *md); /* * A device can still be used while suspended, but I/O is deferred. */ -int dm_suspend(struct mapped_device *md, int with_lockfs); +int dm_suspend(struct mapped_device *md, unsigned suspend_flags); int dm_resume(struct mapped_device *md); /* |