Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031431AbbKDWVj (ORCPT ); Wed, 4 Nov 2015 17:21:39 -0500 Received: from mx1.redhat.com ([209.132.183.28]:38080 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1031077AbbKDWIy (ORCPT ); Wed, 4 Nov 2015 17:08:54 -0500 From: mchristi@redhat.com To: linux-fsdevel@vger.kernel.org, dm-devel@redhat.com, linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, drbd-dev@lists.linbit.com Cc: Mike Christie Subject: [PATCH 15/32] btrfs: prepare for bi_rw split Date: Wed, 4 Nov 2015 16:08:12 -0600 Message-Id: <1446674909-5371-16-git-send-email-mchristi@redhat.com> In-Reply-To: <1446674909-5371-1-git-send-email-mchristi@redhat.com> References: <1446674909-5371-1-git-send-email-mchristi@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 11003 Lines: 294 From: Mike Christie This patch prepares btrfs's submit_bh use for the next patches that split bi_rw into a operation and flags field. Instead of passing in a bitmap with both the operation and flags mixed in, the callers will now pass them in seperately. This patch modifies the code related to the submit_bh calls so the flags and operation are seperated. When this is done for all code, one of the later patches in the series will the actual submit_bh call, so the patches are bisectable. Signed-off-by: Mike Christie --- fs/btrfs/check-integrity.c | 68 ++++++++++++++++++++++++++-------------------- fs/btrfs/check-integrity.h | 2 +- fs/btrfs/disk-io.c | 4 +-- 3 files changed, 41 insertions(+), 33 deletions(-) diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index a5ff6e4..17eba2d 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -168,7 +168,8 @@ struct btrfsic_block { bio_end_io_t *bio; bh_end_io_t *bh; } orig_bio_bh_end_io; - int submit_bio_bh_rw; + int submit_bio_bh_op; + int submit_bio_bh_op_flags; u64 flush_gen; /* only valid if !never_written */ }; @@ -338,7 +339,8 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state, unsigned int num_pages, struct bio *bio, int *bio_is_patched, struct buffer_head *bh, - int submit_bio_bh_rw); + int submit_bio_bh_op, + int submit_bio_bh_op_flags); static int btrfsic_process_written_superblock( struct btrfsic_state *state, struct btrfsic_block *const block, @@ -418,7 +420,8 @@ static void btrfsic_block_init(struct btrfsic_block *b) INIT_LIST_HEAD(&b->all_blocks_node); INIT_LIST_HEAD(&b->ref_to_list); INIT_LIST_HEAD(&b->ref_from_list); - b->submit_bio_bh_rw = 0; + b->submit_bio_bh_op = 0; + b->submit_bio_bh_op_flags = 0; b->flush_gen = 0; } @@ -1820,7 +1823,8 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state, unsigned int num_pages, struct bio *bio, int *bio_is_patched, struct buffer_head *bh, - int submit_bio_bh_rw) + int submit_bio_bh_op, + int submit_bio_bh_op_flags) { int is_metadata; struct btrfsic_block *block; @@ -2038,7 +2042,8 @@ again: } block->flush_gen = dev_state->last_flush_gen + 1; - block->submit_bio_bh_rw = submit_bio_bh_rw; + block->submit_bio_bh_op = submit_bio_bh_op; + block->submit_bio_bh_op_flags = submit_bio_bh_op_flags; if (is_metadata) { block->logical_bytenr = bytenr; block->is_metadata = 1; @@ -2141,7 +2146,8 @@ again: block->iodone_w_error = 0; block->mirror_num = 0; /* unknown */ block->flush_gen = dev_state->last_flush_gen + 1; - block->submit_bio_bh_rw = submit_bio_bh_rw; + block->submit_bio_bh_op = submit_bio_bh_op; + block->submit_bio_bh_op_flags = submit_bio_bh_op_flags; if (NULL != bio) { block->is_iodone = 0; BUG_ON(NULL == bio_is_patched); @@ -2236,7 +2242,7 @@ static void btrfsic_bio_end_io(struct bio *bp) block->dev_bytenr, block->mirror_num); next_block = block->next_in_same_bio; block->iodone_w_error = iodone_w_error; - if (block->submit_bio_bh_rw & REQ_FLUSH) { + if (block->submit_bio_bh_op_flags & REQ_FLUSH) { dev_state->last_flush_gen++; if ((dev_state->state->print_mask & BTRFSIC_PRINT_MASK_END_IO_BIO_BH)) @@ -2245,7 +2251,7 @@ static void btrfsic_bio_end_io(struct bio *bp) dev_state->name, dev_state->last_flush_gen); } - if (block->submit_bio_bh_rw & REQ_FUA) + if (block->submit_bio_bh_op_flags & REQ_FUA) block->flush_gen = 0; /* FUA completed means block is * on disk */ block->is_iodone = 1; /* for FLUSH, this releases the block */ @@ -2272,7 +2278,7 @@ static void btrfsic_bh_end_io(struct buffer_head *bh, int uptodate) block->dev_bytenr, block->mirror_num); block->iodone_w_error = iodone_w_error; - if (block->submit_bio_bh_rw & REQ_FLUSH) { + if (block->submit_bio_bh_op_flags & REQ_FLUSH) { dev_state->last_flush_gen++; if ((dev_state->state->print_mask & BTRFSIC_PRINT_MASK_END_IO_BIO_BH)) @@ -2280,7 +2286,7 @@ static void btrfsic_bh_end_io(struct buffer_head *bh, int uptodate) "bh_end_io() new %s flush_gen=%llu\n", dev_state->name, dev_state->last_flush_gen); } - if (block->submit_bio_bh_rw & REQ_FUA) + if (block->submit_bio_bh_op_flags & REQ_FUA) block->flush_gen = 0; /* FUA completed means block is on disk */ bh->b_private = block->orig_bio_bh_private; @@ -2897,12 +2903,12 @@ static struct btrfsic_dev_state *btrfsic_dev_state_lookup( return ds; } -int btrfsic_submit_bh(int rw, struct buffer_head *bh) +int btrfsic_submit_bh(int op, int op_flags, struct buffer_head *bh) { struct btrfsic_dev_state *dev_state; if (!btrfsic_is_initialized) - return submit_bh(rw, bh); + return submit_bh(op | op_flags, bh); mutex_lock(&btrfsic_mutex); /* since btrfsic_submit_bh() might also be called before @@ -2911,26 +2917,26 @@ int btrfsic_submit_bh(int rw, struct buffer_head *bh) /* Only called to write the superblock (incl. FLUSH/FUA) */ if (NULL != dev_state && - (rw & WRITE) && bh->b_size > 0) { + (op == REQ_OP_WRITE) && bh->b_size > 0) { u64 dev_bytenr; dev_bytenr = 4096 * bh->b_blocknr; if (dev_state->state->print_mask & BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH) printk(KERN_INFO - "submit_bh(rw=0x%x, blocknr=%llu (bytenr %llu)," - " size=%zu, data=%p, bdev=%p)\n", - rw, (unsigned long long)bh->b_blocknr, + "submit_bh(op=%d rw=0x%x, blocknr=%llu " + "(bytenr %llu), size=%zu, data=%p, bdev=%p)\n", + op, op_flags, (unsigned long long)bh->b_blocknr, dev_bytenr, bh->b_size, bh->b_data, bh->b_bdev); btrfsic_process_written_block(dev_state, dev_bytenr, &bh->b_data, 1, NULL, - NULL, bh, rw); - } else if (NULL != dev_state && (rw & REQ_FLUSH)) { + NULL, bh, op, op_flags); + } else if (NULL != dev_state && (op_flags & REQ_FLUSH)) { if (dev_state->state->print_mask & BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH) printk(KERN_INFO "submit_bh(rw=0x%x FLUSH, bdev=%p)\n", - rw, bh->b_bdev); + op, bh->b_bdev); if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) { if ((dev_state->state->print_mask & (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH | @@ -2948,7 +2954,8 @@ int btrfsic_submit_bh(int rw, struct buffer_head *bh) block->never_written = 0; block->iodone_w_error = 0; block->flush_gen = dev_state->last_flush_gen + 1; - block->submit_bio_bh_rw = rw; + block->submit_bio_bh_op = op; + block->submit_bio_bh_op_flags = op_flags; block->orig_bio_bh_private = bh->b_private; block->orig_bio_bh_end_io.bh = bh->b_end_io; block->next_in_same_bio = NULL; @@ -2957,10 +2964,10 @@ int btrfsic_submit_bh(int rw, struct buffer_head *bh) } } mutex_unlock(&btrfsic_mutex); - return submit_bh(rw, bh); + return submit_bh(op | op_flags, bh); } -static void __btrfsic_submit_bio(int rw, struct bio *bio) +static void __btrfsic_submit_bio(int op, int op_flags, struct bio *bio) { struct btrfsic_dev_state *dev_state; @@ -2972,7 +2979,7 @@ static void __btrfsic_submit_bio(int rw, struct bio *bio) * btrfsic_mount(), this might return NULL */ dev_state = btrfsic_dev_state_lookup(bio->bi_bdev); if (NULL != dev_state && - (rw & WRITE) && NULL != bio->bi_io_vec) { + (op == REQ_OP_WRITE) && NULL != bio->bi_io_vec) { unsigned int i; u64 dev_bytenr; u64 cur_bytenr; @@ -2986,7 +2993,7 @@ static void __btrfsic_submit_bio(int rw, struct bio *bio) printk(KERN_INFO "submit_bio(rw=0x%x, bi_vcnt=%u," " bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n", - rw, bio->bi_vcnt, + op, bio->bi_vcnt, (unsigned long long)bio->bi_iter.bi_sector, dev_bytenr, bio->bi_bdev); @@ -3017,18 +3024,18 @@ static void __btrfsic_submit_bio(int rw, struct bio *bio) btrfsic_process_written_block(dev_state, dev_bytenr, mapped_datav, bio->bi_vcnt, bio, &bio_is_patched, - NULL, rw); + NULL, op, op_flags); while (i > 0) { i--; kunmap(bio->bi_io_vec[i].bv_page); } kfree(mapped_datav); - } else if (NULL != dev_state && (rw & REQ_FLUSH)) { + } else if (NULL != dev_state && (op_flags & REQ_FLUSH)) { if (dev_state->state->print_mask & BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH) printk(KERN_INFO "submit_bio(rw=0x%x FLUSH, bdev=%p)\n", - rw, bio->bi_bdev); + op, bio->bi_bdev); if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) { if ((dev_state->state->print_mask & (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH | @@ -3046,7 +3053,8 @@ static void __btrfsic_submit_bio(int rw, struct bio *bio) block->never_written = 0; block->iodone_w_error = 0; block->flush_gen = dev_state->last_flush_gen + 1; - block->submit_bio_bh_rw = rw; + block->submit_bio_bh_op = op; + block->submit_bio_bh_op_flags = op_flags; block->orig_bio_bh_private = bio->bi_private; block->orig_bio_bh_end_io.bio = bio->bi_end_io; block->next_in_same_bio = NULL; @@ -3060,13 +3068,13 @@ leave: void btrfsic_submit_bio(int op, int op_flags, struct bio *bio) { - __btrfsic_submit_bio(op | op_flags, bio); + __btrfsic_submit_bio(op, op_flags, bio); submit_bio(op, op_flags, bio); } int btrfsic_submit_bio_wait(int op, int op_flags, struct bio *bio) { - __btrfsic_submit_bio(op | op_flags, bio); + __btrfsic_submit_bio(op, op_flags, bio); return submit_bio_wait(op, op_flags, bio); } diff --git a/fs/btrfs/check-integrity.h b/fs/btrfs/check-integrity.h index a8edc424..97f7d49 100644 --- a/fs/btrfs/check-integrity.h +++ b/fs/btrfs/check-integrity.h @@ -20,7 +20,7 @@ #define __BTRFS_CHECK_INTEGRITY__ #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY -int btrfsic_submit_bh(int rw, struct buffer_head *bh); +int btrfsic_submit_bh(int op, int op_flags, struct buffer_head *bh); void btrfsic_submit_bio(int op, int op_flags, struct bio *bio); int btrfsic_submit_bio_wait(int op, int op_flags, struct bio *bio); #else diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 6c17d5d..f1262e6 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3323,9 +3323,9 @@ static int write_dev_supers(struct btrfs_device *device, * to go down lazy. */ if (i == 0) - ret = btrfsic_submit_bh(WRITE_FUA, bh); + ret = btrfsic_submit_bh(REQ_OP_WRITE, WRITE_FUA, bh); else - ret = btrfsic_submit_bh(WRITE_SYNC, bh); + ret = btrfsic_submit_bh(REQ_OP_WRITE, WRITE_SYNC, bh); if (ret) errors++; } -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/