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From: Christoph Hellwig <hch@lst.de>
To: Shaohua Li <shli@fb.com>, neilb@suse.de
Cc: dan.j.williams@intel.com, Kernel-team@fb.com, linux-raid@vger.kernel.org
Subject: [PATCH 08/11] raid5-cache: inline r5l_alloc_io_unit into r5l_new_meta
Date: Mon,  5 Oct 2015 09:31:13 +0200	[thread overview]
Message-ID: <1444030276-30850-9-git-send-email-hch@lst.de> (raw)
In-Reply-To: <1444030276-30850-1-git-send-email-hch@lst.de>

This is the only user, and keeping all code initializing the io_unit
structure together improves readbility.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/md/raid5-cache.c | 26 ++++++++------------------
 1 file changed, 8 insertions(+), 18 deletions(-)

diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index f3958e5..b716c41 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -150,23 +150,6 @@ static bool r5l_has_free_space(struct r5l_log *log, sector_t size)
 	return log->device_size > used_size + size;
 }
 
-static struct r5l_io_unit *r5l_alloc_io_unit(struct r5l_log *log)
-{
-	struct r5l_io_unit *io;
-	/* We can't handle memory allocate failure so far */
-	gfp_t gfp = GFP_NOIO | __GFP_NOFAIL;
-
-	io = kmem_cache_zalloc(log->io_kc, gfp);
-	io->log = log;
-	io->meta_page = alloc_page(gfp | __GFP_ZERO);
-
-	bio_list_init(&io->bios);
-	INIT_LIST_HEAD(&io->log_sibling);
-	INIT_LIST_HEAD(&io->stripe_list);
-	io->state = IO_UNIT_RUNNING;
-	return io;
-}
-
 static void r5l_free_io_unit(struct r5l_log *log, struct r5l_io_unit *io)
 {
 	__free_page(io->meta_page);
@@ -295,8 +278,15 @@ static struct r5l_io_unit *r5l_new_meta(struct r5l_log *log)
 	struct r5l_io_unit *io;
 	struct r5l_meta_block *block;
 
-	io = r5l_alloc_io_unit(log);
+	/* We can't handle memory allocate failure so far */
+	io = kmem_cache_zalloc(log->io_kc, GFP_NOIO | __GFP_NOFAIL);
+	io->log = log;
+	bio_list_init(&io->bios);
+	INIT_LIST_HEAD(&io->log_sibling);
+	INIT_LIST_HEAD(&io->stripe_list);
+	io->state = IO_UNIT_RUNNING;
 
+	io->meta_page = alloc_page(GFP_NOIO | __GFP_NOFAIL | __GFP_ZERO);
 	block = page_address(io->meta_page);
 	block->magic = cpu_to_le32(R5LOG_MAGIC);
 	block->version = R5LOG_VERSION;
-- 
1.9.1


  parent reply	other threads:[~2015-10-05  7:31 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-05  7:31 raid5-cache I/O path improvements V3 Christoph Hellwig
2015-10-05  7:31 ` [PATCH 01/11] raid5-cache: free I/O units earlier Christoph Hellwig
2015-10-05  7:31 ` [PATCH 02/11] raid5-cache: rename flushed_ios to finished_ios Christoph Hellwig
2015-10-05  7:31 ` [PATCH 03/11] raid5-cache: factor out a helper to run all stripes for an I/O unit Christoph Hellwig
2015-10-05  7:31 ` [PATCH 04/11] raid5-cache: simplify state machine when caches flushes are not needed Christoph Hellwig
2015-10-05  7:31 ` [PATCH 05/11] raid5-cache: clean up r5l_get_meta Christoph Hellwig
2015-10-05  7:31 ` [PATCH 06/11] raid5-cache: refactor bio allocation Christoph Hellwig
2015-10-05  7:31 ` [PATCH 07/11] raid5-cache: take rdev->data_offset into account early on Christoph Hellwig
2015-10-05  7:31 ` Christoph Hellwig [this message]
2015-10-05  7:31 ` [PATCH 09/11] raid5-cache: new helper: r5_reserve_log_entry Christoph Hellwig
2015-10-05  7:31 ` [PATCH 10/11] raid5-cache: small log->seq cleanup Christoph Hellwig
2015-10-05  7:31 ` [PATCH 11/11] raid5-cache: use bio chaining Christoph Hellwig
2015-10-06 18:14 ` raid5-cache I/O path improvements V3 Shaohua Li
2015-10-08  2:45   ` Neil Brown

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