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Date: Mon, 29 Mar 2010 10:09:21 +0400
From: Dmitry Monakhov <dmonakhov@...nvz.org>
To: linux-kernel@...r.kernel.org
Cc: jens.axboe@...cle.com, Dmitry Monakhov <dmonakhov@...nvz.org>
Subject: [PATCH 2/6] blkdev: generalize flags for blkdev_issue_fn functions
The patch just convert all blkdev_issue_xxx function to common
flags. Wait/allocation semantics not changed.
Signed-off-by: Dmitry Monakhov <dmonakhov@...nvz.org>
---
block/blk-barrier.c | 10 +++++-----
block/ioctl.c | 2 +-
fs/btrfs/extent-tree.c | 2 +-
fs/gfs2/rgrp.c | 5 +++--
include/linux/blkdev.h | 8 +++-----
mm/swapfile.c | 8 +++++---
6 files changed, 18 insertions(+), 17 deletions(-)
diff --git a/block/blk-barrier.c b/block/blk-barrier.c
index 7e6e810..56254b1 100644
--- a/block/blk-barrier.c
+++ b/block/blk-barrier.c
@@ -368,17 +368,17 @@ static void blkdev_discard_end_io(struct bio *bio, int err)
* @sector: start sector
* @nr_sects: number of sectors to discard
* @gfp_mask: memory allocation flags (for bio_alloc)
- * @flags: DISCARD_FL_* flags to control behaviour
+ * @flags: BLKDEV_IFL_* flags to control behaviour
*
* Description:
* Issue a discard request for the sectors in question.
*/
int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
- sector_t nr_sects, gfp_t gfp_mask, int flags)
+ sector_t nr_sects, gfp_t gfp_mask, unsigned long flags)
{
DECLARE_COMPLETION_ONSTACK(wait);
struct request_queue *q = bdev_get_queue(bdev);
- int type = flags & DISCARD_FL_BARRIER ?
+ int type = flags & BLKDEV_IFL_BARRIER ?
DISCARD_BARRIER : DISCARD_NOBARRIER;
struct bio *bio;
struct page *page;
@@ -401,7 +401,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
bio->bi_sector = sector;
bio->bi_end_io = blkdev_discard_end_io;
bio->bi_bdev = bdev;
- if (flags & DISCARD_FL_WAIT)
+ if (flags & BLKDEV_IFL_BARRIER)
bio->bi_private = &wait;
/*
@@ -432,7 +432,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
bio_get(bio);
submit_bio(type, bio);
- if (flags & DISCARD_FL_WAIT)
+ if (flags & BLKDEV_IFL_BARRIER)
wait_for_completion(&wait);
if (bio_flagged(bio, BIO_EOPNOTSUPP))
diff --git a/block/ioctl.c b/block/ioctl.c
index be48ea5..d803cac 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -125,7 +125,7 @@ static int blk_ioctl_discard(struct block_device *bdev, uint64_t start,
if (start + len > (bdev->bd_inode->i_size >> 9))
return -EINVAL;
return blkdev_issue_discard(bdev, start, len, GFP_KERNEL,
- DISCARD_FL_WAIT);
+ BLKDEV_IFL_WAIT);
}
static int put_ushort(unsigned long arg, unsigned short val)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 559f724..7453ac4 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1588,7 +1588,7 @@ static void btrfs_issue_discard(struct block_device *bdev,
u64 start, u64 len)
{
blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_KERNEL,
- DISCARD_FL_BARRIER);
+ BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
}
static int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr,
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 503b842..bf011dc 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -854,7 +854,8 @@ static void gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset,
if ((start + nr_sects) != blk) {
rv = blkdev_issue_discard(bdev, start,
nr_sects, GFP_NOFS,
- DISCARD_FL_BARRIER);
+ BLKDEV_IFL_WAIT |
+ BLKDEV_IFL_BARRIER);
if (rv)
goto fail;
nr_sects = 0;
@@ -869,7 +870,7 @@ start_new_extent:
}
if (nr_sects) {
rv = blkdev_issue_discard(bdev, start, nr_sects, GFP_NOFS,
- DISCARD_FL_BARRIER);
+ BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
if (rv)
goto fail;
}
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index c8ee5cf..84ec105 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1020,10 +1020,8 @@ enum{
#define BLKDEV_IFL_BARRIER (1 << __BLKDEV_IFL_BARRIER)
extern int blkdev_issue_flush(struct block_device *, gfp_t, sector_t *,
unsigned long);
-#define DISCARD_FL_WAIT 0x01 /* wait for completion */
-#define DISCARD_FL_BARRIER 0x02 /* issue DISCARD_BARRIER request */
-extern int blkdev_issue_discard(struct block_device *, sector_t sector,
- sector_t nr_sects, gfp_t, int flags);
+extern int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
+ sector_t nr_sects, gfp_t gfp_mask, unsigned long flags);
static inline int sb_issue_discard(struct super_block *sb,
sector_t block, sector_t nr_blocks)
@@ -1031,7 +1029,7 @@ static inline int sb_issue_discard(struct super_block *sb,
block <<= (sb->s_blocksize_bits - 9);
nr_blocks <<= (sb->s_blocksize_bits - 9);
return blkdev_issue_discard(sb->s_bdev, block, nr_blocks, GFP_KERNEL,
- DISCARD_FL_BARRIER);
+ BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
}
extern int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm);
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 6c0585b..6c48271 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -139,7 +139,8 @@ static int discard_swap(struct swap_info_struct *si)
nr_blocks = ((sector_t)se->nr_pages - 1) << (PAGE_SHIFT - 9);
if (nr_blocks) {
err = blkdev_issue_discard(si->bdev, start_block,
- nr_blocks, GFP_KERNEL, DISCARD_FL_BARRIER);
+ nr_blocks, GFP_KERNEL,
+ BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
if (err)
return err;
cond_resched();
@@ -150,7 +151,8 @@ static int discard_swap(struct swap_info_struct *si)
nr_blocks = (sector_t)se->nr_pages << (PAGE_SHIFT - 9);
err = blkdev_issue_discard(si->bdev, start_block,
- nr_blocks, GFP_KERNEL, DISCARD_FL_BARRIER);
+ nr_blocks, GFP_KERNEL,
+ BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
if (err)
break;
@@ -189,7 +191,7 @@ static void discard_swap_cluster(struct swap_info_struct *si,
start_block <<= PAGE_SHIFT - 9;
nr_blocks <<= PAGE_SHIFT - 9;
if (blkdev_issue_discard(si->bdev, start_block,
- nr_blocks, GFP_NOIO, DISCARD_FL_BARRIER))
+ nr_blocks, GFP_NOIO, BLKDEV_IFL_BARRIER))
break;
}
--
1.6.6.1
--
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