diff options
| author | Richard Weinberger <richard@nod.at> | 2012-09-26 17:51:46 +0200 |
|---|---|---|
| committer | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2012-10-03 11:29:37 +0200 |
| commit | 8974b15c6e84e686201d382c7d459aa9c8c96572 (patch) | |
| tree | 64bfa3b4636c23ae9221043cec58e4fc7bbbc6a6 /drivers | |
| parent | UBI: Add fastmap bits to build.c (diff) | |
| download | linux-8974b15c6e84e686201d382c7d459aa9c8c96572.tar.xz linux-8974b15c6e84e686201d382c7d459aa9c8c96572.zip | |
UBI: Wire-up ->fm_sem
Fastmap uses ->fm_sem to stop EBA changes while writing
a new fastmap.
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/ubi/eba.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c index d56ae1cf65e6..0e11671dadc4 100644 --- a/drivers/mtd/ubi/eba.c +++ b/drivers/mtd/ubi/eba.c @@ -340,7 +340,9 @@ int ubi_eba_unmap_leb(struct ubi_device *ubi, struct ubi_volume *vol, dbg_eba("erase LEB %d:%d, PEB %d", vol_id, lnum, pnum); + down_read(&ubi->fm_sem); vol->eba_tbl[lnum] = UBI_LEB_UNMAPPED; + up_read(&ubi->fm_sem); err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 0); out_unlock: @@ -548,7 +550,9 @@ retry: mutex_unlock(&ubi->buf_mutex); ubi_free_vid_hdr(ubi, vid_hdr); + down_read(&ubi->fm_sem); vol->eba_tbl[lnum] = new_pnum; + up_read(&ubi->fm_sem); ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1); ubi_msg("data was successfully recovered"); @@ -665,7 +669,9 @@ retry: } } + down_read(&ubi->fm_sem); vol->eba_tbl[lnum] = pnum; + up_read(&ubi->fm_sem); leb_write_unlock(ubi, vol_id, lnum); ubi_free_vid_hdr(ubi, vid_hdr); @@ -783,7 +789,9 @@ retry: } ubi_assert(vol->eba_tbl[lnum] < 0); + down_read(&ubi->fm_sem); vol->eba_tbl[lnum] = pnum; + up_read(&ubi->fm_sem); leb_write_unlock(ubi, vol_id, lnum); ubi_free_vid_hdr(ubi, vid_hdr); @@ -904,7 +912,9 @@ retry: goto out_leb_unlock; } + down_read(&ubi->fm_sem); vol->eba_tbl[lnum] = pnum; + up_read(&ubi->fm_sem); out_leb_unlock: leb_write_unlock(ubi, vol_id, lnum); @@ -1151,7 +1161,9 @@ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to, } ubi_assert(vol->eba_tbl[lnum] == from); + down_read(&ubi->fm_sem); vol->eba_tbl[lnum] = to; + up_read(&ubi->fm_sem); out_unlock_buf: mutex_unlock(&ubi->buf_mutex); |