forked from luck/tmp_suning_uos_patched
UBI: use bit-fields
Save 12 bytes of RAM per volume by using bit-fields instead of integers. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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@ -144,7 +144,6 @@ struct ubi_volume_desc;
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* @readers: number of users holding this volume in read-only mode
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* @writers: number of users holding this volume in read-write mode
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* @exclusive: whether somebody holds this volume in exclusive mode
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* @checked: if this static volume was checked
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*
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* @reserved_pebs: how many physical eraseblocks are reserved for this volume
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* @vol_type: volume type (%UBI_DYNAMIC_VOLUME or %UBI_STATIC_VOLUME)
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@ -152,21 +151,22 @@ struct ubi_volume_desc;
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* @used_ebs: how many logical eraseblocks in this volume contain data
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* @last_eb_bytes: how many bytes are stored in the last logical eraseblock
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* @used_bytes: how many bytes of data this volume contains
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* @upd_marker: non-zero if the update marker is set for this volume
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* @corrupted: non-zero if the volume is corrupted (static volumes only)
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* @alignment: volume alignment
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* @data_pad: how many bytes are not used at the end of physical eraseblocks to
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* satisfy the requested alignment
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* @name_len: volume name length
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* @name: volume name
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*
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* @updating: whether the volume is being updated
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* @upd_ebs: how many eraseblocks are expected to be updated
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* @upd_bytes: how many bytes are expected to be received
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* @upd_received: how many update bytes were already received
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* @upd_buf: update buffer which is used to collect update data
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*
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* @eba_tbl: EBA table of this volume (LEB->PEB mapping)
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* @checked: %1 if this static volume was checked
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* @corrupted: %1 if the volume is corrupted (static volumes only)
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* @upd_marker: %1 if the update marker is set for this volume
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* @updating: %1 if the volume is being updated
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*
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* @gluebi_desc: gluebi UBI volume descriptor
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* @gluebi_refcount: reference count of the gluebi MTD device
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@ -189,7 +189,6 @@ struct ubi_volume {
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int readers;
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int writers;
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int exclusive;
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int checked;
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int reserved_pebs;
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int vol_type;
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@ -197,20 +196,21 @@ struct ubi_volume {
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int used_ebs;
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int last_eb_bytes;
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long long used_bytes;
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int upd_marker;
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int corrupted;
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int alignment;
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int data_pad;
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int name_len;
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char name[UBI_VOL_NAME_MAX+1];
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int updating;
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int upd_ebs;
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long long upd_bytes;
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long long upd_received;
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void *upd_buf;
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int *eba_tbl;
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int checked:1;
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int corrupted:1;
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int upd_marker:1;
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int updating:1;
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#ifdef CONFIG_MTD_UBI_GLUEBI
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/* Gluebi-related stuff may be compiled out */
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@ -526,7 +526,6 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
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}
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spin_unlock(&ubi->volumes_lock);
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/* Reserve physical eraseblocks */
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pebs = reserved_pebs - vol->reserved_pebs;
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if (pebs > 0) {
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@ -746,11 +745,6 @@ static void paranoid_check_volume(struct ubi_device *ubi, int vol_id)
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goto fail;
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}
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if (vol->upd_marker != 0 && vol->upd_marker != 1) {
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ubi_err("bad upd_marker");
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goto fail;
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}
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if (vol->upd_marker && vol->corrupted) {
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dbg_err("update marker and corrupted simultaneously");
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goto fail;
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@ -785,7 +779,7 @@ static void paranoid_check_volume(struct ubi_device *ubi, int vol_id)
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n = (long long)vol->used_ebs * vol->usable_leb_size;
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if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
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if (vol->corrupted != 0) {
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if (vol->corrupted) {
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ubi_err("corrupted dynamic volume");
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goto fail;
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}
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@ -802,10 +796,6 @@ static void paranoid_check_volume(struct ubi_device *ubi, int vol_id)
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goto fail;
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}
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} else {
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if (vol->corrupted != 0 && vol->corrupted != 1) {
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ubi_err("bad corrupted");
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goto fail;
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}
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if (vol->used_ebs < 0 || vol->used_ebs > vol->reserved_pebs) {
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ubi_err("bad used_ebs");
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goto fail;
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