- 4.19.134

[packages/kernel.git] / kernel-small_fixes.patch

Move setting up operation and write hint to xfs_alloc_ioend, and\r
then just copy over all needed information from the previous bio\r
in xfs_chain_bio and stop passing various parameters to it.\r
\r
Signed-off-by: Christoph Hellwig <hch@lst.de>\r
---\r
 fs/xfs/xfs_aops.c | 35 +++++++++++++++++------------------\r
 1 file changed, 17 insertions(+), 18 deletions(-)\r
\r
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c\r
index a6f0f4761a37..9cceb90e77c5 100644\r
--- a/fs/xfs/xfs_aops.c\r
+++ b/fs/xfs/xfs_aops.c\r
@@ -665,7 +665,6 @@ xfs_submit_ioend(\r
 \r
 	ioend->io_bio->bi_private = ioend;\r
 	ioend->io_bio->bi_end_io = xfs_end_bio;\r
-	ioend->io_bio->bi_opf = REQ_OP_WRITE | wbc_to_write_flags(wbc);\r
 \r
 	/*\r
 	 * If we are failing the IO now, just mark the ioend with an\r
@@ -679,7 +678,6 @@ xfs_submit_ioend(\r
 		return status;\r
 	}\r
 \r
-	ioend->io_bio->bi_write_hint = ioend->io_inode->i_write_hint;\r
 	submit_bio(ioend->io_bio);\r
 	return 0;\r
 }\r
@@ -691,7 +689,8 @@ xfs_alloc_ioend(\r
 	xfs_exntst_t		state,\r
 	xfs_off_t		offset,\r
 	struct block_device	*bdev,\r
-	sector_t		sector)\r
+	sector_t		sector,\r
+	struct writeback_control *wbc)\r
 {\r
 	struct xfs_ioend	*ioend;\r
 	struct bio		*bio;\r
@@ -699,6 +698,8 @@ xfs_alloc_ioend(\r
 	bio = bio_alloc_bioset(GFP_NOFS, BIO_MAX_PAGES, &xfs_ioend_bioset);\r
 	bio_set_dev(bio, bdev);\r
 	bio->bi_iter.bi_sector = sector;\r
+	bio->bi_opf = REQ_OP_WRITE | wbc_to_write_flags(wbc);\r
+	bio->bi_write_hint = inode->i_write_hint;\r
 \r
 	ioend = container_of(bio, struct xfs_ioend, io_inline_bio);\r
 	INIT_LIST_HEAD(&ioend->io_list);\r
@@ -719,24 +720,22 @@ xfs_alloc_ioend(\r
  * so that the bi_private linkage is set up in the right direction for the\r
  * traversal in xfs_destroy_ioend().\r
  */\r
-static void\r
+static struct bio *\r
 xfs_chain_bio(\r
-	struct xfs_ioend	*ioend,\r
-	struct writeback_control *wbc,\r
-	struct block_device	*bdev,\r
-	sector_t		sector)\r
+	struct bio		*prev)\r
 {\r
 	struct bio *new;\r
 \r
 	new = bio_alloc(GFP_NOFS, BIO_MAX_PAGES);\r
-	bio_set_dev(new, bdev);\r
-	new->bi_iter.bi_sector = sector;\r
-	bio_chain(ioend->io_bio, new);\r
-	bio_get(ioend->io_bio);		/* for xfs_destroy_ioend */\r
-	ioend->io_bio->bi_opf = REQ_OP_WRITE | wbc_to_write_flags(wbc);\r
-	ioend->io_bio->bi_write_hint = ioend->io_inode->i_write_hint;\r
-	submit_bio(ioend->io_bio);\r
-	ioend->io_bio = new;\r
+	bio_copy_dev(new, prev);\r
+	new->bi_iter.bi_sector = bio_end_sector(prev);\r
+	new->bi_opf = prev->bi_opf;\r
+	new->bi_write_hint = prev->bi_write_hint;\r
+\r
+	bio_chain(prev, new);\r
+	bio_get(prev);		/* for xfs_destroy_ioend */\r
+	submit_bio(prev);\r
+	return new;\r
 }\r
 \r
 /*\r
@@ -614,14 +614,14 @@ xfs_add_to_ioend(\r
 		if (wpc->ioend)\r
 			list_add(&wpc->ioend->io_list, iolist);\r
 		wpc->ioend = xfs_alloc_ioend(inode, wpc->io_type, offset,\r
-				bdev, sector);\r
+				bdev, sector, wbc);\r
 	}\r
 \r
 	if (!__bio_try_merge_page(wpc->ioend->io_bio, page, len, poff)) {\r
 		if (iop)\r
 			atomic_inc(&iop->write_count);\r
 		if (bio_full(wpc->ioend->io_bio))\r
-			xfs_chain_bio(wpc->ioend, wbc, bdev, sector);\r
+			wpc->ioend->io_bio = xfs_chain_bio(wpc->ioend->io_bio);\r
 		__bio_add_page(wpc->ioend->io_bio, page, len, poff);\r
 	}\r
 \r
-- \r
2.20.1\r
\r
\r
Link every newly allocated writeback bio to cgroup pointed to by the\r
writeback control structure, and charge every byte written back to it.\r
\r
Tested-by: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>\r
Signed-off-by: Christoph Hellwig <hch@lst.de>\r
---\r
 fs/xfs/xfs_aops.c  | 4 +++-\r
 fs/xfs/xfs_super.c | 2 ++\r
 2 files changed, 5 insertions(+), 1 deletion(-)\r
\r
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c\r
index 9cceb90e77c5..73c291aeae17 100644\r
--- a/fs/xfs/xfs_aops.c\r
+++ b/fs/xfs/xfs_aops.c\r
@@ -700,6 +700,7 @@ xfs_alloc_ioend(\r
 	bio->bi_iter.bi_sector = sector;\r
 	bio->bi_opf = REQ_OP_WRITE | wbc_to_write_flags(wbc);\r
 	bio->bi_write_hint = inode->i_write_hint;\r
+	wbc_init_bio(wbc, bio);\r
 \r
 	ioend = container_of(bio, struct xfs_ioend, io_inline_bio);\r
 	INIT_LIST_HEAD(&ioend->io_list);\r
@@ -727,7 +728,7 @@ xfs_chain_bio(\r
 	struct bio *new;\r
 \r
 	new = bio_alloc(GFP_NOFS, BIO_MAX_PAGES);\r
-	bio_copy_dev(new, prev);\r
+	bio_copy_dev(new, prev);/* also copies over blkcg information */\r
 	new->bi_iter.bi_sector = bio_end_sector(prev);\r
 	new->bi_opf = prev->bi_opf;\r
 	new->bi_write_hint = prev->bi_write_hint;\r
@@ -782,6 +783,7 @@ xfs_add_to_ioend(\r
 	}\r
 \r
 	wpc->ioend->io_size += len;\r
+	wbc_account_io(wbc, page, len);\r
 }\r
 \r
 STATIC void\r
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c\r
index 594c119824cc..ee0df8f611ff 100644\r
--- a/fs/xfs/xfs_super.c\r
+++ b/fs/xfs/xfs_super.c\r
@@ -1685,6 +1685,8 @@ xfs_fs_fill_super(\r
 	sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);\r
 	sb->s_max_links = XFS_MAXLINK;\r
 	sb->s_time_gran = 1;\r
+	sb->s_iflags |= SB_I_CGROUPWB;\r
+\r
 	set_posix_acl_flag(sb);\r
 \r
 	/* version 5 superblocks support inode version counters. */\r
-- \r
2.20.1\r
\r