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| author | JackieLiu <liuyun01@kylinos.cn> | 2016-11-02 17:02:39 +0800 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2016-11-07 15:08:22 -0800 |
| commit | 3fd880af4174d724d209a890101962b00d5d33d4 (patch) | |
| tree | 36128be0fda73ff8a3ecb9cab287ce93b807e303 | |
| parent | cc6167b4f3b3caabe973ca12612ac7d60aae0cfc (diff) | |
| download | linux-stable-3fd880af4174d724d209a890101962b00d5d33d4.tar.gz linux-stable-3fd880af4174d724d209a890101962b00d5d33d4.tar.bz2 linux-stable-3fd880af4174d724d209a890101962b00d5d33d4.zip | |
raid5-cache: restrict the use area of the log_offset variable
We can calculate this offset by using ctx->meta_total_blocks,
without passing in from the function
Signed-off-by: JackieLiu <liuyun01@kylinos.cn>
Signed-off-by: Shaohua Li <shli@fb.com>
| -rw-r--r-- | drivers/md/raid5-cache.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c index a227a9f3ee65..2e270e69c550 100644 --- a/drivers/md/raid5-cache.c +++ b/drivers/md/raid5-cache.c @@ -895,7 +895,7 @@ static int r5l_read_meta_block(struct r5l_log *log, static int r5l_recovery_flush_one_stripe(struct r5l_log *log, struct r5l_recovery_ctx *ctx, sector_t stripe_sect, - int *offset, sector_t *log_offset) + int *offset) { struct r5conf *conf = log->rdev->mddev->private; struct stripe_head *sh; @@ -904,6 +904,8 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log *log, sh = raid5_get_active_stripe(conf, stripe_sect, 0, 0, 0); while (1) { + sector_t log_offset = r5l_ring_add(log, ctx->pos, + ctx->meta_total_blocks); payload = page_address(ctx->meta_page) + *offset; if (le16_to_cpu(payload->header.type) == R5LOG_PAYLOAD_DATA) { @@ -911,16 +913,15 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log *log, le64_to_cpu(payload->location), 0, &disk_index, sh); - sync_page_io(log->rdev, *log_offset, PAGE_SIZE, + sync_page_io(log->rdev, log_offset, PAGE_SIZE, sh->dev[disk_index].page, REQ_OP_READ, 0, false); sh->dev[disk_index].log_checksum = le32_to_cpu(payload->checksum[0]); set_bit(R5_Wantwrite, &sh->dev[disk_index].flags); - ctx->meta_total_blocks += BLOCK_SECTORS; } else { disk_index = sh->pd_idx; - sync_page_io(log->rdev, *log_offset, PAGE_SIZE, + sync_page_io(log->rdev, log_offset, PAGE_SIZE, sh->dev[disk_index].page, REQ_OP_READ, 0, false); sh->dev[disk_index].log_checksum = @@ -930,7 +931,7 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log *log, if (sh->qd_idx >= 0) { disk_index = sh->qd_idx; sync_page_io(log->rdev, - r5l_ring_add(log, *log_offset, BLOCK_SECTORS), + r5l_ring_add(log, log_offset, BLOCK_SECTORS), PAGE_SIZE, sh->dev[disk_index].page, REQ_OP_READ, 0, false); sh->dev[disk_index].log_checksum = @@ -938,11 +939,9 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log *log, set_bit(R5_Wantwrite, &sh->dev[disk_index].flags); } - ctx->meta_total_blocks += BLOCK_SECTORS * conf->max_degraded; } - *log_offset = r5l_ring_add(log, *log_offset, - le32_to_cpu(payload->size)); + ctx->meta_total_blocks += le32_to_cpu(payload->size); *offset += sizeof(struct r5l_payload_data_parity) + sizeof(__le32) * (le32_to_cpu(payload->size) >> (PAGE_SHIFT - 9)); @@ -999,12 +998,10 @@ static int r5l_recovery_flush_one_meta(struct r5l_log *log, struct r5l_payload_data_parity *payload; struct r5l_meta_block *mb; int offset; - sector_t log_offset; sector_t stripe_sector; mb = page_address(ctx->meta_page); offset = sizeof(struct r5l_meta_block); - log_offset = r5l_ring_add(log, ctx->pos, BLOCK_SECTORS); while (offset < le32_to_cpu(mb->meta_size)) { int dd; @@ -1013,7 +1010,7 @@ static int r5l_recovery_flush_one_meta(struct r5l_log *log, stripe_sector = raid5_compute_sector(conf, le64_to_cpu(payload->location), 0, &dd, NULL); if (r5l_recovery_flush_one_stripe(log, ctx, stripe_sector, - &offset, &log_offset)) + &offset)) return -EINVAL; } return 0; |