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UBI: introduce volume refcounting

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Add ref_count field to UBI volumes and remove weired "vol->removed"
field. This way things are better understandable and we do not have
to do whold show_attr operation under spinlock.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy
2007-12-17 15:42:57 +02:00
parent db6e5770ef
commit d05c77a816
5 changed files with 84 additions and 42 deletions
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10
drivers/mtd/ubi/eba.c
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@@ -301,6 +301,8 @@ int ubi_eba_unmap_leb(struct ubi_device *ubi, struct ubi_volume *vol,
{
int err, pnum, vol_id = vol->vol_id;
ubi_assert(vol->ref_count > 0);
if (ubi->ro_mode)
return -EROFS;
@@ -349,6 +351,8 @@ int ubi_eba_read_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
struct ubi_vid_hdr *vid_hdr;
uint32_t uninitialized_var(crc);
ubi_assert(vol->ref_count > 0);
err = leb_read_lock(ubi, vol_id, lnum);
if (err)
return err;
@@ -572,6 +576,8 @@ int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
int err, pnum, tries = 0, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
ubi_assert(vol->ref_count > 0);
if (ubi->ro_mode)
return -EROFS;
@@ -705,6 +711,8 @@ int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol,
struct ubi_vid_hdr *vid_hdr;
uint32_t crc;
ubi_assert(vol->ref_count > 0);
if (ubi->ro_mode)
return -EROFS;
@@ -819,6 +827,8 @@ int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
struct ubi_vid_hdr *vid_hdr;
uint32_t crc;
ubi_assert(vol->ref_count > 0);
if (ubi->ro_mode)
return -EROFS;