The patch titled Subject: hugetlbfs: fix inaccurate comment in hugetlbfs_statfs() has been added to the -mm mm-unstable branch. Its filename is hugetlbfs-fix-inaccurate-comment-in-hugetlbfs_statfs.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/hugetlbfs-fix-inaccurate-comment-in-hugetlbfs_statfs.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Miaohe Lin <linmiaohe@xxxxxxxxxx> Subject: hugetlbfs: fix inaccurate comment in hugetlbfs_statfs() Date: Tue, 26 Jul 2022 22:29:18 +0800 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@xxxxxxxxxx Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> Cc: <songmuchun@xxxxxxxxxxxxx> Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/hugetlbfs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/hugetlbfs/inode.c~hugetlbfs-fix-inaccurate-comment-in-hugetlbfs_statfs +++ a/fs/hugetlbfs/inode.c @@ -1090,7 +1090,7 @@ static int hugetlbfs_statfs(struct dentr buf->f_bsize = huge_page_size(h); if (sbinfo) { spin_lock(&sbinfo->stat_lock); - /* If no limits set, just report 0 for max/free/used + /* If no limits set, just report 0 or -1 for max/free/used * blocks, like simple_statfs() */ if (sbinfo->spool) { long free_pages; _ Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are mm-hugetlb-avoid-corrupting-page-mapping-in-hugetlb_mcopy_atomic_pte.patch mm-page_alloc-minor-clean-up-for-memmap_init_compound.patch mm-mmapc-fix-missing-call-to-vm_unacct_memory-in-mmap_region.patch filemap-minor-cleanup-for-filemap_write_and_wait_range.patch mm-remove-obsolete-comment-in-do_fault_around.patch mm-remove-unneeded-pageanon-check-in-restore_exclusive_pte.patch mm-mempolicy-remove-unneeded-out-label.patch hugetlb_cgroup-fix-wrong-hugetlb-cgroup-numa-stat.patch hugetlbfs-use-helper-macro-sz_1km.patch hugetlbfs-remove-unneeded-hugetlbfs_ops-forward-declaration.patch hugetlbfs-remove-unneeded-header-file.patch hugetlbfs-cleanup-some-comments-in-inodec.patch hugetlbfs-fix-inaccurate-comment-in-hugetlbfs_statfs.patch