mirror of https://gitee.com/openkylin/linux.git
btrfs: scrub: embed scrub_wr_ctx into scrub context
The structure scrub_wr_ctx is not used anywhere just the scrub context, we can move the members there. The tgtdev is renamed so it's more clear that it belongs to the "wr" part. Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
parent
25cc1226c1
commit
3fb99303c6
103
fs/btrfs/scrub.c
103
fs/btrfs/scrub.c
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@ -161,14 +161,6 @@ struct scrub_parity {
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unsigned long bitmap[0];
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};
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struct scrub_wr_ctx {
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struct scrub_bio *wr_curr_bio;
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struct btrfs_device *tgtdev;
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int pages_per_wr_bio; /* <= SCRUB_PAGES_PER_WR_BIO */
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atomic_t flush_all_writes;
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struct mutex wr_lock;
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};
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struct scrub_ctx {
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struct scrub_bio *bios[SCRUB_BIOS_PER_SCTX];
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struct btrfs_fs_info *fs_info;
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@ -185,7 +177,12 @@ struct scrub_ctx {
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int pages_per_rd_bio;
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int is_dev_replace;
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struct scrub_wr_ctx wr_ctx;
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struct scrub_bio *wr_curr_bio;
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struct mutex wr_lock;
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int pages_per_wr_bio; /* <= SCRUB_PAGES_PER_WR_BIO */
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atomic_t flush_all_writes;
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struct btrfs_device *wr_tgtdev;
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/*
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* statistics
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@ -656,7 +653,7 @@ static noinline_for_stack void scrub_free_ctx(struct scrub_ctx *sctx)
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kfree(sbio);
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}
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kfree(sctx->wr_ctx.wr_curr_bio);
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kfree(sctx->wr_curr_bio);
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scrub_free_csums(sctx);
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kfree(sctx);
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}
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@ -712,14 +709,14 @@ struct scrub_ctx *scrub_setup_ctx(struct btrfs_device *dev, int is_dev_replace)
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spin_lock_init(&sctx->stat_lock);
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init_waitqueue_head(&sctx->list_wait);
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WARN_ON(sctx->wr_ctx.wr_curr_bio != NULL);
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mutex_init(&sctx->wr_ctx.wr_lock);
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sctx->wr_ctx.wr_curr_bio = NULL;
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WARN_ON(sctx->wr_curr_bio != NULL);
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mutex_init(&sctx->wr_lock);
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sctx->wr_curr_bio = NULL;
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if (is_dev_replace) {
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WARN_ON(!dev->bdev);
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sctx->wr_ctx.pages_per_wr_bio = SCRUB_PAGES_PER_WR_BIO;
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sctx->wr_ctx.tgtdev = dev;
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atomic_set(&sctx->wr_ctx.flush_all_writes, 0);
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sctx->pages_per_wr_bio = SCRUB_PAGES_PER_WR_BIO;
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sctx->wr_tgtdev = dev;
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atomic_set(&sctx->flush_all_writes, 0);
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}
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return sctx;
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@ -1892,35 +1889,34 @@ static int scrub_write_page_to_dev_replace(struct scrub_block *sblock,
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static int scrub_add_page_to_wr_bio(struct scrub_ctx *sctx,
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struct scrub_page *spage)
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{
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struct scrub_wr_ctx *wr_ctx = &sctx->wr_ctx;
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struct scrub_bio *sbio;
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int ret;
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mutex_lock(&wr_ctx->wr_lock);
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mutex_lock(&sctx->wr_lock);
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again:
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if (!wr_ctx->wr_curr_bio) {
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wr_ctx->wr_curr_bio = kzalloc(sizeof(*wr_ctx->wr_curr_bio),
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if (!sctx->wr_curr_bio) {
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sctx->wr_curr_bio = kzalloc(sizeof(*sctx->wr_curr_bio),
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GFP_KERNEL);
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if (!wr_ctx->wr_curr_bio) {
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mutex_unlock(&wr_ctx->wr_lock);
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if (!sctx->wr_curr_bio) {
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mutex_unlock(&sctx->wr_lock);
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return -ENOMEM;
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}
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wr_ctx->wr_curr_bio->sctx = sctx;
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wr_ctx->wr_curr_bio->page_count = 0;
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sctx->wr_curr_bio->sctx = sctx;
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sctx->wr_curr_bio->page_count = 0;
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}
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sbio = wr_ctx->wr_curr_bio;
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sbio = sctx->wr_curr_bio;
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if (sbio->page_count == 0) {
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struct bio *bio;
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sbio->physical = spage->physical_for_dev_replace;
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sbio->logical = spage->logical;
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sbio->dev = wr_ctx->tgtdev;
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sbio->dev = sctx->wr_tgtdev;
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bio = sbio->bio;
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if (!bio) {
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bio = btrfs_io_bio_alloc(GFP_KERNEL,
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wr_ctx->pages_per_wr_bio);
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sctx->pages_per_wr_bio);
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if (!bio) {
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mutex_unlock(&wr_ctx->wr_lock);
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mutex_unlock(&sctx->wr_lock);
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return -ENOMEM;
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}
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sbio->bio = bio;
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@ -1945,7 +1941,7 @@ static int scrub_add_page_to_wr_bio(struct scrub_ctx *sctx,
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if (sbio->page_count < 1) {
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bio_put(sbio->bio);
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sbio->bio = NULL;
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mutex_unlock(&wr_ctx->wr_lock);
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mutex_unlock(&sctx->wr_lock);
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return -EIO;
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}
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scrub_wr_submit(sctx);
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@ -1955,23 +1951,22 @@ static int scrub_add_page_to_wr_bio(struct scrub_ctx *sctx,
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sbio->pagev[sbio->page_count] = spage;
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scrub_page_get(spage);
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sbio->page_count++;
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if (sbio->page_count == wr_ctx->pages_per_wr_bio)
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if (sbio->page_count == sctx->pages_per_wr_bio)
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scrub_wr_submit(sctx);
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mutex_unlock(&wr_ctx->wr_lock);
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mutex_unlock(&sctx->wr_lock);
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return 0;
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}
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static void scrub_wr_submit(struct scrub_ctx *sctx)
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{
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struct scrub_wr_ctx *wr_ctx = &sctx->wr_ctx;
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struct scrub_bio *sbio;
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if (!wr_ctx->wr_curr_bio)
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if (!sctx->wr_curr_bio)
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return;
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sbio = wr_ctx->wr_curr_bio;
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wr_ctx->wr_curr_bio = NULL;
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sbio = sctx->wr_curr_bio;
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sctx->wr_curr_bio = NULL;
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WARN_ON(!sbio->bio->bi_bdev);
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scrub_pending_bio_inc(sctx);
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/* process all writes in a single worker thread. Then the block layer
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@ -2414,10 +2409,10 @@ static void scrub_missing_raid56_worker(struct btrfs_work *work)
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scrub_block_put(sblock);
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if (sctx->is_dev_replace &&
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atomic_read(&sctx->wr_ctx.flush_all_writes)) {
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mutex_lock(&sctx->wr_ctx.wr_lock);
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atomic_read(&sctx->flush_all_writes)) {
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mutex_lock(&sctx->wr_lock);
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scrub_wr_submit(sctx);
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mutex_unlock(&sctx->wr_ctx.wr_lock);
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mutex_unlock(&sctx->wr_lock);
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}
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scrub_pending_bio_dec(sctx);
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@ -2622,10 +2617,10 @@ static void scrub_bio_end_io_worker(struct btrfs_work *work)
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spin_unlock(&sctx->list_lock);
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if (sctx->is_dev_replace &&
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atomic_read(&sctx->wr_ctx.flush_all_writes)) {
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mutex_lock(&sctx->wr_ctx.wr_lock);
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atomic_read(&sctx->flush_all_writes)) {
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mutex_lock(&sctx->wr_lock);
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scrub_wr_submit(sctx);
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mutex_unlock(&sctx->wr_ctx.wr_lock);
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mutex_unlock(&sctx->wr_lock);
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}
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scrub_pending_bio_dec(sctx);
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@ -3299,9 +3294,9 @@ static noinline_for_stack int scrub_raid56_parity(struct scrub_ctx *sctx,
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logic_end - logic_start);
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scrub_parity_put(sparity);
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scrub_submit(sctx);
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mutex_lock(&sctx->wr_ctx.wr_lock);
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mutex_lock(&sctx->wr_lock);
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scrub_wr_submit(sctx);
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mutex_unlock(&sctx->wr_ctx.wr_lock);
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mutex_unlock(&sctx->wr_lock);
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btrfs_release_path(path);
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return ret < 0 ? ret : 0;
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@ -3457,14 +3452,14 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
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*/
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if (atomic_read(&fs_info->scrub_pause_req)) {
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/* push queued extents */
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atomic_set(&sctx->wr_ctx.flush_all_writes, 1);
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atomic_set(&sctx->flush_all_writes, 1);
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scrub_submit(sctx);
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mutex_lock(&sctx->wr_ctx.wr_lock);
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mutex_lock(&sctx->wr_lock);
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scrub_wr_submit(sctx);
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mutex_unlock(&sctx->wr_ctx.wr_lock);
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mutex_unlock(&sctx->wr_lock);
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wait_event(sctx->list_wait,
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atomic_read(&sctx->bios_in_flight) == 0);
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atomic_set(&sctx->wr_ctx.flush_all_writes, 0);
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atomic_set(&sctx->flush_all_writes, 0);
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scrub_blocked_if_needed(fs_info);
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}
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@ -3671,9 +3666,9 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
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out:
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/* push queued extents */
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scrub_submit(sctx);
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mutex_lock(&sctx->wr_ctx.wr_lock);
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mutex_lock(&sctx->wr_lock);
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scrub_wr_submit(sctx);
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mutex_unlock(&sctx->wr_ctx.wr_lock);
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mutex_unlock(&sctx->wr_lock);
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blk_finish_plug(&plug);
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btrfs_free_path(path);
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@ -3910,11 +3905,11 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx,
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* write requests are really completed when bios_in_flight
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* changes to 0.
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*/
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atomic_set(&sctx->wr_ctx.flush_all_writes, 1);
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atomic_set(&sctx->flush_all_writes, 1);
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scrub_submit(sctx);
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mutex_lock(&sctx->wr_ctx.wr_lock);
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mutex_lock(&sctx->wr_lock);
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scrub_wr_submit(sctx);
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mutex_unlock(&sctx->wr_ctx.wr_lock);
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mutex_unlock(&sctx->wr_lock);
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wait_event(sctx->list_wait,
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atomic_read(&sctx->bios_in_flight) == 0);
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*/
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wait_event(sctx->list_wait,
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atomic_read(&sctx->workers_pending) == 0);
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atomic_set(&sctx->wr_ctx.flush_all_writes, 0);
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atomic_set(&sctx->flush_all_writes, 0);
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scrub_pause_off(fs_info);
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@ -4633,7 +4628,7 @@ static int write_page_nocow(struct scrub_ctx *sctx,
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struct btrfs_device *dev;
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int ret;
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dev = sctx->wr_ctx.tgtdev;
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dev = sctx->wr_tgtdev;
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if (!dev)
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return -EIO;
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if (!dev->bdev) {
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