All of lore.kernel.org
 help / color / mirror / Atom feed
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 1/9] block: add block_device_operations methods to set and get reserved space
Date: Thu, 17 Mar 2016 10:30:29 -0400	[thread overview]
Message-ID: <1458225037-24155-2-git-send-email-bfoster@redhat.com> (raw)
In-Reply-To: <1458225037-24155-1-git-send-email-bfoster@redhat.com>

From: Mike Snitzer <snitzer@redhat.com>

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
 fs/block_dev.c         | 20 ++++++++++++++++++++
 include/linux/blkdev.h |  5 +++++
 2 files changed, 25 insertions(+)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 826b164..375a2e4 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -497,6 +497,26 @@ long bdev_direct_access(struct block_device *bdev, struct blk_dax_ctl *dax)
 }
 EXPORT_SYMBOL_GPL(bdev_direct_access);
 
+int blk_reserve_space(struct block_device *bdev, sector_t nr_sects)
+{
+	const struct block_device_operations *ops = bdev->bd_disk->fops;
+
+	if (!ops->reserve_space)
+		return -EOPNOTSUPP;
+	return ops->reserve_space(bdev, nr_sects);
+}
+EXPORT_SYMBOL_GPL(blk_reserve_space);
+
+int blk_get_reserved_space(struct block_device *bdev, sector_t *nr_sects)
+{
+	const struct block_device_operations *ops = bdev->bd_disk->fops;
+
+	if (!ops->get_reserved_space)
+		return -EOPNOTSUPP;
+	return ops->get_reserved_space(bdev, nr_sects);
+}
+EXPORT_SYMBOL_GPL(blk_get_reserved_space);
+
 /*
  * pseudo-fs
  */
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 413c84f..f212fe5 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1664,6 +1664,8 @@ struct block_device_operations {
 	int (*getgeo)(struct block_device *, struct hd_geometry *);
 	/* this callback is with swap_lock and sometimes page table lock held */
 	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 *);
 	struct module *owner;
 	const struct pr_ops *pr_ops;
 };
@@ -1674,6 +1676,9 @@ extern int bdev_read_page(struct block_device *, sector_t, struct page *);
 extern int bdev_write_page(struct block_device *, sector_t, struct page *,
 						struct writeback_control *);
 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 *);
 #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 1/9] block: add block_device_operations methods to set and get reserved space
Date: Thu, 17 Mar 2016 10:30:29 -0400	[thread overview]
Message-ID: <1458225037-24155-2-git-send-email-bfoster@redhat.com> (raw)
In-Reply-To: <1458225037-24155-1-git-send-email-bfoster@redhat.com>

From: Mike Snitzer <snitzer@redhat.com>

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
 fs/block_dev.c         | 20 ++++++++++++++++++++
 include/linux/blkdev.h |  5 +++++
 2 files changed, 25 insertions(+)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 826b164..375a2e4 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -497,6 +497,26 @@ long bdev_direct_access(struct block_device *bdev, struct blk_dax_ctl *dax)
 }
 EXPORT_SYMBOL_GPL(bdev_direct_access);
 
+int blk_reserve_space(struct block_device *bdev, sector_t nr_sects)
+{
+	const struct block_device_operations *ops = bdev->bd_disk->fops;
+
+	if (!ops->reserve_space)
+		return -EOPNOTSUPP;
+	return ops->reserve_space(bdev, nr_sects);
+}
+EXPORT_SYMBOL_GPL(blk_reserve_space);
+
+int blk_get_reserved_space(struct block_device *bdev, sector_t *nr_sects)
+{
+	const struct block_device_operations *ops = bdev->bd_disk->fops;
+
+	if (!ops->get_reserved_space)
+		return -EOPNOTSUPP;
+	return ops->get_reserved_space(bdev, nr_sects);
+}
+EXPORT_SYMBOL_GPL(blk_get_reserved_space);
+
 /*
  * pseudo-fs
  */
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 413c84f..f212fe5 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1664,6 +1664,8 @@ struct block_device_operations {
 	int (*getgeo)(struct block_device *, struct hd_geometry *);
 	/* this callback is with swap_lock and sometimes page table lock held */
 	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 *);
 	struct module *owner;
 	const struct pr_ops *pr_ops;
 };
@@ -1674,6 +1676,9 @@ extern int bdev_read_page(struct block_device *, sector_t, struct page *);
 extern int bdev_write_page(struct block_device *, sector_t, struct page *,
 						struct writeback_control *);
 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 *);
 #else /* CONFIG_BLOCK */
 
 struct block_device;
-- 
2.4.3

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

  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 ` Brian Foster [this message]
2016-03-17 14:30   ` [RFC PATCH 1/9] block: add block_device_operations methods to set and get reserved space Brian Foster
2016-03-21 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 ` [RFC PATCH 5/9] block: add a block_device_operations method to provision space Brian Foster
2016-03-17 14:30   ` 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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1458225037-24155-2-git-send-email-bfoster@redhat.com \
    --to=bfoster@redhat.com \
    --cc=dm-devel@redhat.com \
    --cc=linux-block@vger.kernel.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=xfs@oss.sgi.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.