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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-12 10:29:36 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-12 10:29:36 -0700 |
| commit | 4970c0cb6aa8996e39b1626887f5fb67a49f5ad1 (patch) | |
| tree | 8e734bdf15768744a0ec03fbc715a6404a4f732b /drivers/md/dm-snap-persistent.c | |
| parent | 3c0ed7d56d77b61f2177e8b72855ea32073c2091 (diff) | |
| parent | 25cb62b76430a91cc6195f902e61c2cb84ade622 (diff) | |
Merge 4.3-rc5 into char-misc next
We want the fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/md/dm-snap-persistent.c')
| -rw-r--r-- | drivers/md/dm-snap-persistent.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c index bf71583296f7..aeacad9be51d 100644 --- a/drivers/md/dm-snap-persistent.c +++ b/drivers/md/dm-snap-persistent.c @@ -7,6 +7,7 @@ #include "dm-exception-store.h" +#include <linux/ctype.h> #include <linux/mm.h> #include <linux/pagemap.h> #include <linux/vmalloc.h> @@ -843,8 +844,7 @@ static void persistent_drop_snapshot(struct dm_exception_store *store) DMWARN("write header failed"); } -static int persistent_ctr(struct dm_exception_store *store, - unsigned argc, char **argv) +static int persistent_ctr(struct dm_exception_store *store, char *options) { struct pstore *ps; @@ -873,6 +873,16 @@ static int persistent_ctr(struct dm_exception_store *store, return -ENOMEM; } + if (options) { + char overflow = toupper(options[0]); + if (overflow == 'O') + store->userspace_supports_overflow = true; + else { + DMERR("Unsupported persistent store option: %s", options); + return -EINVAL; + } + } + store->context = ps; return 0; @@ -888,7 +898,8 @@ static unsigned persistent_status(struct dm_exception_store *store, case STATUSTYPE_INFO: break; case STATUSTYPE_TABLE: - DMEMIT(" P %llu", (unsigned long long)store->chunk_size); + DMEMIT(" %s %llu", store->userspace_supports_overflow ? "PO" : "P", + (unsigned long long)store->chunk_size); } return sz; |