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hugetlb: allow bulk updating in hugetlb_*_quota()

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Add a second parameter 'delta' to hugetlb_get_quota and hugetlb_put_quota to
allow bulk updating of the sbinfo->free_blocks counter.  This will be used by
the next patch in the series.

Signed-off-by: Adam Litke <agl@us.ibm.com>
Cc: Ken Chen <kenchen@google.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: David Gibson <hermes@gibson.dropbear.id.au>
Cc: William Lee Irwin III <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Adam Litke
2007-11-14 16:59:41 -08:00
committed by Linus Torvalds
parent 2fc39cec6a
commit 9a119c056d
3 changed files with 9 additions and 9 deletions
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10
fs/hugetlbfs/inode.c
View File

@@ -858,15 +858,15 @@ out_free:
return -ENOMEM;
}
int hugetlb_get_quota(struct address_space *mapping)
int hugetlb_get_quota(struct address_space *mapping, long delta)
{
int ret = 0;
struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(mapping->host->i_sb);
if (sbinfo->free_blocks > -1) {
spin_lock(&sbinfo->stat_lock);
if (sbinfo->free_blocks > 0)
sbinfo->free_blocks--;
if (sbinfo->free_blocks - delta >= 0)
sbinfo->free_blocks -= delta;
else
ret = -ENOMEM;
spin_unlock(&sbinfo->stat_lock);
@@ -875,13 +875,13 @@ int hugetlb_get_quota(struct address_space *mapping)
return ret;
}
void hugetlb_put_quota(struct address_space *mapping)
void hugetlb_put_quota(struct address_space *mapping, long delta)
{
struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(mapping->host->i_sb);
if (sbinfo->free_blocks > -1) {
spin_lock(&sbinfo->stat_lock);
sbinfo->free_blocks++;
sbinfo->free_blocks += delta;
spin_unlock(&sbinfo->stat_lock);
}
}