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| author | Mikulas Patocka <mpatocka@redhat.com> | 2008-10-10 14:37:00 +0200 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2008-10-10 14:37:00 +0200 |
| commit | a481db784682b33d078c7bf8a1d0581dc09946c1 (patch) | |
| tree | 380b08162df8b49e23c846112fb9d376d3b6fe65 /drivers/md | |
| parent | dm raid1: kcopyd should stop on error if errors handled (diff) | |
| download | linux-a481db784682b33d078c7bf8a1d0581dc09946c1.tar.xz linux-a481db784682b33d078c7bf8a1d0581dc09946c1.zip | |
dm exception store: introduce area_location function
Move this logic to a function, because it will be reused later.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md')
| -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 41f408068a7c..824cf31967c5 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) |