diff options
Diffstat (limited to 'fs/gfs2/lops.c')
-rw-r--r-- | fs/gfs2/lops.c | 77 |
1 files changed, 47 insertions, 30 deletions
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index 1921cda034fd..ab5d9fca73f6 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -264,7 +264,7 @@ static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, struct super_block *sb = sdp->sd_vfs; struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); - bio->bi_iter.bi_sector = blkno * (sb->s_blocksize >> 9); + bio->bi_iter.bi_sector = blkno << sdp->sd_fsb2bb_shift; bio_set_dev(bio, sb->s_bdev); bio->bi_end_io = end_io; bio->bi_private = sdp; @@ -421,7 +421,7 @@ static bool gfs2_jhead_pg_srch(struct gfs2_jdesc *jd, for (offset = 0; offset < PAGE_SIZE; offset += sdp->sd_sb.sb_bsize) { if (!__get_log_header(sdp, kaddr + offset, 0, &lh)) { - if (lh.lh_sequence > head->lh_sequence) + if (lh.lh_sequence >= head->lh_sequence) *head = lh; else { ret = true; @@ -471,6 +471,20 @@ static void gfs2_jhead_process_page(struct gfs2_jdesc *jd, unsigned long index, put_page(page); /* Once more for find_or_create_page */ } +static struct bio *gfs2_chain_bio(struct bio *prev, unsigned int nr_iovecs) +{ + struct bio *new; + + new = bio_alloc(GFP_NOIO, nr_iovecs); + bio_copy_dev(new, prev); + new->bi_iter.bi_sector = bio_end_sector(prev); + new->bi_opf = prev->bi_opf; + new->bi_write_hint = prev->bi_write_hint; + bio_chain(new, prev); + submit_bio(prev); + return new; +} + /** * gfs2_find_jhead - find the head of a log * @jd: The journal descriptor @@ -487,10 +501,10 @@ int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); struct address_space *mapping = jd->jd_inode->i_mapping; unsigned int block = 0, blocks_submitted = 0, blocks_read = 0; - unsigned int bsize = sdp->sd_sb.sb_bsize; + unsigned int bsize = sdp->sd_sb.sb_bsize, off; unsigned int bsize_shift = sdp->sd_sb.sb_bsize_shift; unsigned int shift = PAGE_SHIFT - bsize_shift; - unsigned int readhead_blocks = BIO_MAX_PAGES << shift; + unsigned int max_blocks = 2 * 1024 * 1024 >> bsize_shift; struct gfs2_journal_extent *je; int sz, ret = 0; struct bio *bio = NULL; @@ -504,9 +518,9 @@ int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, since = filemap_sample_wb_err(mapping); list_for_each_entry(je, &jd->extent_list, list) { - for (; block < je->lblock + je->blocks; block++) { - u64 dblock; + u64 dblock = je->dblock; + for (; block < je->lblock + je->blocks; block++, dblock++) { if (!page) { page = find_or_create_page(mapping, block >> shift, GFP_NOFS); @@ -515,35 +529,41 @@ int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, done = true; goto out; } + off = 0; } - if (bio) { - unsigned int off; - - off = (block << bsize_shift) & ~PAGE_MASK; - sz = bio_add_page(bio, page, bsize, off); - if (sz == bsize) { /* block added */ - if (off + bsize == PAGE_SIZE) { - page = NULL; - goto page_added; - } - continue; + if (bio && (off || block < blocks_submitted + max_blocks)) { + sector_t sector = dblock << sdp->sd_fsb2bb_shift; + + if (bio_end_sector(bio) == sector) { + sz = bio_add_page(bio, page, bsize, off); + if (sz == bsize) + goto block_added; + } + if (off) { + unsigned int blocks = + (PAGE_SIZE - off) >> bsize_shift; + + bio = gfs2_chain_bio(bio, blocks); + goto add_block_to_new_bio; } - blocks_submitted = block + 1; + } + + if (bio) { + blocks_submitted = block; submit_bio(bio); - bio = NULL; } - dblock = je->dblock + (block - je->lblock); bio = gfs2_log_alloc_bio(sdp, dblock, gfs2_end_log_read); bio->bi_opf = REQ_OP_READ; - sz = bio_add_page(bio, page, bsize, 0); - gfs2_assert_warn(sdp, sz == bsize); - if (bsize == PAGE_SIZE) +add_block_to_new_bio: + sz = bio_add_page(bio, page, bsize, off); + BUG_ON(sz != bsize); +block_added: + off += bsize; + if (off == PAGE_SIZE) page = NULL; - -page_added: - if (blocks_submitted < blocks_read + readhead_blocks) { + if (blocks_submitted <= blocks_read + max_blocks) { /* Keep at least one bio in flight */ continue; } @@ -864,10 +884,7 @@ static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) bd = list_entry(head->next, struct gfs2_bufdata, bd_list); list_del_init(&bd->bd_list); gl = bd->bd_gl; - if (atomic_dec_return(&gl->gl_revokes) == 0) { - clear_bit(GLF_LFLUSH, &gl->gl_flags); - gfs2_glock_queue_put(gl); - } + gfs2_glock_remove_revoke(gl); kmem_cache_free(gfs2_bufdata_cachep, bd); } } |