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hugetlbfs: fix inaccurate comment in hugetlbfs_statfs()
In some cases, e.g. when size option is not specified, f_blocks, f_bavail and f_bfree will be set to -1 instead of 0. Likewise, when nr_inodes isn't specified, f_files and f_ffree will be set to -1 too. Update the comment to make this clear. Link: https://lkml.kernel.org/r/20220726142918.51693-6-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Reviewed-by: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -1090,7 +1090,7 @@ static int hugetlbfs_statfs(struct dentry *dentry, struct kstatfs *buf)
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buf->f_bsize = huge_page_size(h);
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if (sbinfo) {
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spin_lock(&sbinfo->stat_lock);
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/* If no limits set, just report 0 for max/free/used
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/* If no limits set, just report 0 or -1 for max/free/used
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* blocks, like simple_statfs() */
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if (sbinfo->spool) {
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long free_pages;
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