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From: Brian Foster <bfoster@redhat.com>
To: xfs@oss.sgi.com
Cc: dm-devel@redhat.com, linux-block@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
Subject: [RFC PATCH 5/9] block: add a block_device_operations method to provision space
Date: Thu, 17 Mar 2016 10:30:33 -0400	[thread overview]
Message-ID: <1458225037-24155-6-git-send-email-bfoster@redhat.com> (raw)
In-Reply-To: <1458225037-24155-1-git-send-email-bfoster@redhat.com>

Signed-off-by: Brian Foster <bfoster@redhat.com>
---
 fs/block_dev.c         | 10 ++++++++++
 include/linux/blkdev.h |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 375a2e4..73e57b9 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -517,6 +517,16 @@ int blk_get_reserved_space(struct block_device *bdev, sector_t *nr_sects)
 }
 EXPORT_SYMBOL_GPL(blk_get_reserved_space);
 
+int blk_provision_space(struct block_device *bdev, sector_t offset, sector_t len)
+{
+	const struct block_device_operations *ops = bdev->bd_disk->fops;
+
+	if (!ops->provision_space)
+		return -EOPNOTSUPP;
+	return ops->provision_space(bdev, offset, len);
+}
+EXPORT_SYMBOL_GPL(blk_provision_space);
+
 /*
  * pseudo-fs
  */
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f212fe5..d0fa8a35 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1666,6 +1666,7 @@ struct block_device_operations {
 	void (*swap_slot_free_notify) (struct block_device *, unsigned long);
 	int (*reserve_space) (struct block_device *, sector_t);
 	int (*get_reserved_space) (struct block_device *, sector_t *);
+	int (*provision_space) (struct block_device *, sector_t, sector_t);
 	struct module *owner;
 	const struct pr_ops *pr_ops;
 };
@@ -1679,6 +1680,7 @@ extern long bdev_direct_access(struct block_device *, struct blk_dax_ctl *);
 
 extern int blk_reserve_space(struct block_device *, sector_t);
 extern int blk_get_reserved_space(struct block_device *, sector_t *);
+extern int blk_provision_space(struct block_device *, sector_t, sector_t);
 #else /* CONFIG_BLOCK */
 
 struct block_device;
-- 
2.4.3


WARNING: multiple messages have this Message-ID (diff)
From: Brian Foster <bfoster@redhat.com>
To: xfs@oss.sgi.com
Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	dm-devel@redhat.com
Subject: [RFC PATCH 5/9] block: add a block_device_operations method to provision space
Date: Thu, 17 Mar 2016 10:30:33 -0400	[thread overview]
Message-ID: <1458225037-24155-6-git-send-email-bfoster@redhat.com> (raw)
In-Reply-To: <1458225037-24155-1-git-send-email-bfoster@redhat.com>

Signed-off-by: Brian Foster <bfoster@redhat.com>
---
 fs/block_dev.c         | 10 ++++++++++
 include/linux/blkdev.h |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 375a2e4..73e57b9 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -517,6 +517,16 @@ int blk_get_reserved_space(struct block_device *bdev, sector_t *nr_sects)
 }
 EXPORT_SYMBOL_GPL(blk_get_reserved_space);
 
+int blk_provision_space(struct block_device *bdev, sector_t offset, sector_t len)
+{
+	const struct block_device_operations *ops = bdev->bd_disk->fops;
+
+	if (!ops->provision_space)
+		return -EOPNOTSUPP;
+	return ops->provision_space(bdev, offset, len);
+}
+EXPORT_SYMBOL_GPL(blk_provision_space);
+
 /*
  * pseudo-fs
  */
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f212fe5..d0fa8a35 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1666,6 +1666,7 @@ struct block_device_operations {
 	void (*swap_slot_free_notify) (struct block_device *, unsigned long);
 	int (*reserve_space) (struct block_device *, sector_t);
 	int (*get_reserved_space) (struct block_device *, sector_t *);
+	int (*provision_space) (struct block_device *, sector_t, sector_t);
 	struct module *owner;
 	const struct pr_ops *pr_ops;
 };
@@ -1679,6 +1680,7 @@ extern long bdev_direct_access(struct block_device *, struct blk_dax_ctl *);
 
 extern int blk_reserve_space(struct block_device *, sector_t);
 extern int blk_get_reserved_space(struct block_device *, sector_t *);
+extern int blk_provision_space(struct block_device *, sector_t, sector_t);
 #else /* CONFIG_BLOCK */
 
 struct block_device;
-- 
2.4.3

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  parent reply	other threads:[~2016-03-17 14:30 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-17 14:30 [RFC PATCH 0/9] dm-thin/xfs: prototype a block reservation allocation model Brian Foster
2016-03-17 14:30 ` Brian Foster
2016-03-17 14:30 ` [RFC PATCH 1/9] block: add block_device_operations methods to set and get reserved space Brian Foster
2016-03-17 14:30   ` Brian Foster
2016-03-21 12:08   ` Carlos Maiolino
2016-03-21 12:08     ` Carlos Maiolino
2016-03-21 21:53     ` Dave Chinner
2016-03-21 21:53       ` Dave Chinner
2016-03-22 12:05       ` Brian Foster
2016-03-22 12:05         ` Brian Foster
2016-03-17 14:30 ` [RFC PATCH 2/9] dm: add " Brian Foster
2016-03-17 14:30   ` Brian Foster
2016-03-21 12:17   ` Carlos Maiolino
2016-03-21 12:17     ` Carlos Maiolino
2016-03-17 14:30 ` [RFC PATCH 3/9] dm thin: " Brian Foster
2016-03-17 14:30   ` Brian Foster
2016-03-17 14:30 ` [RFC PATCH 4/9] dm thin: update reserve space func to allow reduction Brian Foster
2016-03-17 14:30   ` Brian Foster
2016-03-17 14:30 ` Brian Foster [this message]
2016-03-17 14:30   ` [RFC PATCH 5/9] block: add a block_device_operations method to provision space Brian Foster
2016-03-17 14:30 ` [RFC PATCH 6/9] dm: add " Brian Foster
2016-03-17 14:30   ` Brian Foster
2016-03-17 14:30 ` [RFC PATCH 7/9] dm thin: " Brian Foster
2016-03-17 14:30   ` Brian Foster
2016-03-17 14:30 ` [RFC PATCH 8/9] xfs: thin block device reservation mechanism Brian Foster
2016-03-17 14:30   ` Brian Foster
2016-03-17 14:30 ` [RFC PATCH 9/9] xfs: adopt a reserved allocation model on dm-thin devices Brian Foster
2016-03-17 14:30   ` Brian Foster
2016-03-21 13:33 ` [RFC PATCH 0/9] dm-thin/xfs: prototype a block reservation allocation model Carlos Maiolino
2016-03-21 13:33   ` Carlos Maiolino
2016-03-21 22:36   ` Dave Chinner
2016-03-21 22:36     ` Dave Chinner
2016-03-22 12:06     ` Brian Foster
2016-03-22 12:06       ` Brian Foster

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