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| author | Mike Kravetz <mike.kravetz@oracle.com> | 2015-09-09 01:01:35 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-09 01:35:28 +0300 |
| commit | c672c7f29f2fdb73e1f72911bf499675c81fcdbb (patch) | |
| tree | 5c1f29402791506a19e7d136a267ab407c886637 /include | |
| parent | feba16e25a578080af5aad5eb9e469b4e6c23eef (diff) | |
| download | linux-c672c7f29f2fdb73e1f72911bf499675c81fcdbb.tar.xz | |
mm/hugetlb: expose hugetlb fault mutex for use by fallocate
hugetlb page faults are currently synchronized by the table of mutexes
(htlb_fault_mutex_table). fallocate code will need to synchronize with
the page fault code when it allocates or deletes pages. Expose
interfaces so that fallocate operations can be synchronized with page
faults. Minor name changes to be more consistent with other global
hugetlb symbols.
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/hugetlb.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index e2d94960b38b..530cf6fc24c7 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -88,6 +88,11 @@ int dequeue_hwpoisoned_huge_page(struct page *page); bool isolate_huge_page(struct page *page, struct list_head *list); void putback_active_hugepage(struct page *page); void free_huge_page(struct page *page); +extern struct mutex *hugetlb_fault_mutex_table; +u32 hugetlb_fault_mutex_hash(struct hstate *h, struct mm_struct *mm, + struct vm_area_struct *vma, + struct address_space *mapping, + pgoff_t idx, unsigned long address); #ifdef CONFIG_ARCH_WANT_HUGE_PMD_SHARE pte_t *huge_pmd_share(struct mm_struct *mm, unsigned long addr, pud_t *pud); |