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| author |   Mike Kravetz <mike.kravetz@oracle.com> | 2021-02-24 12:09:54 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-24 13:38:35 -0800 |
| commit | 33b8f84a4ee78491a8f4f9e4c5520c9da4a10983 (patch) | |
| tree | ff122f4c9ba3a1a8f9d2fb8871e33353c499d3c6 /fs/hugetlbfs | |
| parent | mm, oom: fix a comment in dump_task() (diff) | |
| download | linux-dev-33b8f84a4ee78491a8f4f9e4c5520c9da4a10983.tar.xz linux-dev-33b8f84a4ee78491a8f4f9e4c5520c9da4a10983.zip | |
mm/hugetlb: change hugetlb_reserve_pages() to type bool
While reviewing a bug in hugetlb_reserve_pages, it was noticed that all
callers ignore the return value. Any failure is considered an ENOMEM
error by the callers.
Change the function to be of type bool. The function will return true if
the reservation was successful, false otherwise. Callers currently assume
a zero return code indicates success. Change the callers to look for true
to indicate success. No functional change, only code cleanup.
Link: https://lkml.kernel.org/r/20201221192542.15732-1-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/hugetlbfs')
| -rw-r--r-- | fs/hugetlbfs/inode.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 5a8ed6bd4f87..3eca85a4d940 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -171,7 +171,7 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma) file_accessed(file); ret = -ENOMEM; - if (hugetlb_reserve_pages(inode, + if (!hugetlb_reserve_pages(inode, vma->vm_pgoff >> huge_page_order(h), len >> huge_page_shift(h), vma, vma->vm_flags)) @@ -1493,7 +1493,7 @@ struct file *hugetlb_file_setup(const char *name, size_t size, inode->i_size = size; clear_nlink(inode); - if (hugetlb_reserve_pages(inode, 0, + if (!hugetlb_reserve_pages(inode, 0, size >> huge_page_shift(hstate_inode(inode)), NULL, acctflag)) file = ERR_PTR(-ENOMEM); |