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UBI: Wire-up ->fm_sem

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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>
This commit is contained in:
Richard Weinberger
2012-09-26 17:51:46 +02:00
committed by Artem Bityutskiy
parent 77e6c2f04d
commit 8974b15c6e
1 changed files with 12 additions and 0 deletions
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12
drivers/mtd/ubi/eba.c
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@@ -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); dbg_eba("erase LEB %d:%d, PEB %d", vol_id, lnum, pnum);
down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = UBI_LEB_UNMAPPED; vol->eba_tbl[lnum] = UBI_LEB_UNMAPPED;
up_read(&ubi->fm_sem);
err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 0); err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 0);
out_unlock: out_unlock:
@@ -548,7 +550,9 @@ retry:
mutex_unlock(&ubi->buf_mutex); mutex_unlock(&ubi->buf_mutex);
ubi_free_vid_hdr(ubi, vid_hdr); ubi_free_vid_hdr(ubi, vid_hdr);
down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = new_pnum; vol->eba_tbl[lnum] = new_pnum;
up_read(&ubi->fm_sem);
ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1); ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1);
ubi_msg("data was successfully recovered"); ubi_msg("data was successfully recovered");
@@ -665,7 +669,9 @@ retry:
} }
} }
down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = pnum; vol->eba_tbl[lnum] = pnum;
up_read(&ubi->fm_sem);
leb_write_unlock(ubi, vol_id, lnum); leb_write_unlock(ubi, vol_id, lnum);
ubi_free_vid_hdr(ubi, vid_hdr); ubi_free_vid_hdr(ubi, vid_hdr);
@@ -783,7 +789,9 @@ retry:
} }
ubi_assert(vol->eba_tbl[lnum] < 0); ubi_assert(vol->eba_tbl[lnum] < 0);
down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = pnum; vol->eba_tbl[lnum] = pnum;
up_read(&ubi->fm_sem);
leb_write_unlock(ubi, vol_id, lnum); leb_write_unlock(ubi, vol_id, lnum);
ubi_free_vid_hdr(ubi, vid_hdr); ubi_free_vid_hdr(ubi, vid_hdr);
@@ -904,7 +912,9 @@ retry:
goto out_leb_unlock; goto out_leb_unlock;
} }
down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = pnum; vol->eba_tbl[lnum] = pnum;
up_read(&ubi->fm_sem);
out_leb_unlock: out_leb_unlock:
leb_write_unlock(ubi, vol_id, lnum); 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); ubi_assert(vol->eba_tbl[lnum] == from);
down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = to; vol->eba_tbl[lnum] = to;
up_read(&ubi->fm_sem);
out_unlock_buf: out_unlock_buf:
mutex_unlock(&ubi->buf_mutex); mutex_unlock(&ubi->buf_mutex);