diff options
| author | Mike Anderson <andmike@us.ibm.com> | 2006-03-27 13:17:54 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-27 20:44:59 +0400 |
| commit | 1134e5ae79bab61c05657ca35a6297cf87202e35 (patch) | |
| tree | 16d5e9c722fbe17dc343c65b85628c8e6ee36199 /drivers/md/dm-table.c | |
| parent | 9ade92a9a5b0a3a10efa6551b8c67a9277bf0438 (diff) | |
| download | linux-1134e5ae79bab61c05657ca35a6297cf87202e35.tar.xz | |
[PATCH] dm table: store md
Store an up-pointer to the owning struct mapped_device in every table when it
is created.
Access it with:
struct mapped_device *dm_table_get_md(struct dm_table *t)
Tables linked to md must be destroyed before the md itself.
Signed-off-by: Mike Anderson <andmike@us.ibm.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>
Diffstat (limited to 'drivers/md/dm-table.c')
| -rw-r--r-- | drivers/md/dm-table.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 9558a4acec12..84f4594afd3c 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -22,6 +22,7 @@ #define CHILDREN_PER_NODE (KEYS_PER_NODE + 1) struct dm_table { + struct mapped_device *md; atomic_t holders; /* btree table */ @@ -206,7 +207,8 @@ static int alloc_targets(struct dm_table *t, unsigned int num) return 0; } -int dm_table_create(struct dm_table **result, int mode, unsigned num_targets) +int dm_table_create(struct dm_table **result, int mode, + unsigned num_targets, struct mapped_device *md) { struct dm_table *t = kmalloc(sizeof(*t), GFP_KERNEL); @@ -229,6 +231,7 @@ int dm_table_create(struct dm_table **result, int mode, unsigned num_targets) } t->mode = mode; + t->md = md; *result = t; return 0; } @@ -952,12 +955,20 @@ int dm_table_flush_all(struct dm_table *t) return ret; } +struct mapped_device *dm_table_get_md(struct dm_table *t) +{ + dm_get(t->md); + + return t->md; +} + EXPORT_SYMBOL(dm_vcalloc); EXPORT_SYMBOL(dm_get_device); EXPORT_SYMBOL(dm_put_device); EXPORT_SYMBOL(dm_table_event); EXPORT_SYMBOL(dm_table_get_size); EXPORT_SYMBOL(dm_table_get_mode); +EXPORT_SYMBOL(dm_table_get_md); EXPORT_SYMBOL(dm_table_put); EXPORT_SYMBOL(dm_table_get); EXPORT_SYMBOL(dm_table_unplug_all); |