diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-08-03 00:43:43 +0300 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2021-08-03 19:43:13 +0300 |
| commit | d0364f9490d7e098963ce4d146b51f9cd1199412 (patch) | |
| tree | af9058d464643e8651422bebe2477de36a786329 /fs/iomap | |
| parent | c500bee1c5b2f1d59b1081ac879d73268ab0ff17 (diff) | |
| download | linux-d0364f9490d7e098963ce4d146b51f9cd1199412.tar.xz | |
iomap: simplify iomap_readpage_actor
Now that the outstanding reads are counted in bytes, there is no need
to use the low-level __bio_try_merge_page API, we can switch back to
always using bio_add_page and simplify iomap_readpage_actor again.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Diffstat (limited to 'fs/iomap')
| -rw-r--r-- | fs/iomap/buffered-io.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 87ccb3438bec..712b6513a0c4 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -241,7 +241,6 @@ iomap_readpage_actor(struct inode *inode, loff_t pos, loff_t length, void *data, struct iomap_readpage_ctx *ctx = data; struct page *page = ctx->cur_page; struct iomap_page *iop; - bool same_page = false, is_contig = false; loff_t orig_pos = pos; unsigned poff, plen; sector_t sector; @@ -268,16 +267,10 @@ iomap_readpage_actor(struct inode *inode, loff_t pos, loff_t length, void *data, if (iop) atomic_add(plen, &iop->read_bytes_pending); - /* Try to merge into a previous segment if we can */ sector = iomap_sector(iomap, pos); - if (ctx->bio && bio_end_sector(ctx->bio) == sector) { - if (__bio_try_merge_page(ctx->bio, page, plen, poff, - &same_page)) - goto done; - is_contig = true; - } - - if (!is_contig || bio_full(ctx->bio, plen)) { + if (!ctx->bio || + bio_end_sector(ctx->bio) != sector || + bio_add_page(ctx->bio, page, plen, poff) != plen) { gfp_t gfp = mapping_gfp_constraint(page->mapping, GFP_KERNEL); gfp_t orig_gfp = gfp; unsigned int nr_vecs = DIV_ROUND_UP(length, PAGE_SIZE); @@ -301,9 +294,8 @@ iomap_readpage_actor(struct inode *inode, loff_t pos, loff_t length, void *data, ctx->bio->bi_iter.bi_sector = sector; bio_set_dev(ctx->bio, iomap->bdev); ctx->bio->bi_end_io = iomap_read_end_io; + __bio_add_page(ctx->bio, page, plen, poff); } - - bio_add_page(ctx->bio, page, plen, poff); done: /* * Move the caller beyond our range so that it keeps making progress. |