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| author | Ackerley Tng <ackerleytng@google.com> | 2023-05-02 23:56:22 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-06-09 16:25:17 -0700 |
| commit | adef080382637f207c68e8ad633481d9b9332b63 (patch) | |
| tree | 0a0db08f206a56058a6e8b43978250d918b7d563 /fs | |
| parent | 88537aac0b3840314d3a5cc401a7fc400c069bc9 (diff) | |
| download | lwn-adef080382637f207c68e8ad633481d9b9332b63.tar.gz lwn-adef080382637f207c68e8ad633481d9b9332b63.zip | |
fs: hugetlbfs: set vma policy only when needed for allocating folio
Calling hugetlb_set_vma_policy() later avoids setting the vma policy
and then dropping it on a page cache hit.
Link: https://lkml.kernel.org/r/20230502235622.3652586-1-ackerleytng@google.com
Signed-off-by: Ackerley Tng <ackerleytng@google.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Vishal Annapurve <vannapurve@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/hugetlbfs/inode.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index ecfdfb2529a3..90361a922cec 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -834,9 +834,6 @@ static long hugetlbfs_fallocate(struct file *file, int mode, loff_t offset, break; } - /* Set numa allocation policy based on index */ - hugetlb_set_vma_policy(&pseudo_vma, inode, index); - /* addr is the offset within the file (zero based) */ addr = index * hpage_size; @@ -850,7 +847,6 @@ static long hugetlbfs_fallocate(struct file *file, int mode, loff_t offset, rcu_read_unlock(); if (present) { mutex_unlock(&hugetlb_fault_mutex_table[hash]); - hugetlb_drop_vma_policy(&pseudo_vma); continue; } @@ -862,6 +858,7 @@ static long hugetlbfs_fallocate(struct file *file, int mode, loff_t offset, * folios in these areas, we need to consume the reserves * to keep reservation accounting consistent. */ + hugetlb_set_vma_policy(&pseudo_vma, inode, index); folio = alloc_hugetlb_folio(&pseudo_vma, addr, 0); hugetlb_drop_vma_policy(&pseudo_vma); if (IS_ERR(folio)) { |