diff options
Diffstat (limited to 'drivers/md/dm-exception-store.c')
| -rw-r--r-- | drivers/md/dm-exception-store.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/md/dm-exception-store.c b/drivers/md/dm-exception-store.c index 41f408068a7..824cf31967c 100644 --- a/drivers/md/dm-exception-store.c +++ b/drivers/md/dm-exception-store.c @@ -209,6 +209,14 @@ static int chunk_io(struct pstore *ps, uint32_t chunk, int rw, int metadata) } /* + * Convert a metadata area index to a chunk index. + */ +static chunk_t area_location(struct pstore *ps, chunk_t area) +{ + return 1 + ((ps->exceptions_per_area + 1) * area); +} + +/* * Read or write a metadata area. Remembering to skip the first * chunk which holds the header. */ @@ -217,8 +225,7 @@ static int area_io(struct pstore *ps, uint32_t area, int rw) int r; uint32_t chunk; - /* convert a metadata area index to a chunk index */ - chunk = 1 + ((ps->exceptions_per_area + 1) * area); + chunk = area_location(ps, area); r = chunk_io(ps, chunk, rw, 0); if (r) |