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Btrfs: Fixes for 2.6.28-rc API changes

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* open/close_bdev_excl -> open/close_bdev_exclusive
* blkdev_issue_discard takes a GFP mask now
* Fix blkdev_issue_discard usage now that it is enabled

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-11-19 21:17:22 -05:00
parent ae20a6afec
commit 15916de835
7 changed files with 74 additions and 46 deletions
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27
fs/btrfs/extent-tree.c
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@@ -28,6 +28,7 @@
#include "volumes.h"
#include "locking.h"
#include "ref-cache.h"
#include "compat.h"
#define PENDING_EXTENT_INSERT 0
#define PENDING_EXTENT_DELETE 1
@@ -899,6 +900,17 @@ static int noinline remove_extent_backref(struct btrfs_trans_handle *trans,
return ret;
}
static void btrfs_issue_discard(struct block_device *bdev,
u64 start, u64 len)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_KERNEL);
#else
blkdev_issue_discard(bdev, start >> 9, len >> 9);
#endif
}
static int noinline free_extents(struct btrfs_trans_handle *trans,
struct btrfs_root *extent_root,
struct list_head *del_list)
@@ -1108,6 +1120,7 @@ search:
BUG_ON(ret);
#ifdef BIO_RW_DISCARD
map_length = tmp->num_bytes;
ret = btrfs_map_block(&info->mapping_tree, READ,
tmp->bytenr, &map_length, &multi,
0);
@@ -1115,16 +1128,16 @@ search:
struct btrfs_bio_stripe *stripe;
int i;
stripe = multi->stripe;
stripe = multi->stripes;
if (map_length > tmp->num_bytes)
map_length = tmp->num_bytes;
for (i = 0; i < multi->num_stripes;
i++, stripe++)
blkdev_issue_discard(stripe->dev->bdev,
stripe->physical >> 9,
map_length >> 9);
btrfs_issue_discard(stripe->dev->bdev,
stripe->physical,
map_length);
kfree(multi);
}
#endif
@@ -2498,9 +2511,9 @@ static int __free_extent(struct btrfs_trans_handle *trans,
map_length = num_bytes;
for (i = 0; i < multi->num_stripes; i++, stripe++) {
blkdev_issue_discard(stripe->dev->bdev,
stripe->physical >> 9,
map_length >> 9);
btrfs_issue_discard(stripe->dev->bdev,
stripe->physical,
map_length);
}
kfree(multi);
}