On 2/12/07, Dave McCracken <[EMAIL PROTECTED]> wrote:
This patch enables the full functionality of truncate for hugetlbfs files. Truncate was originally limited to reducing the file size because page faults were not supported for hugetlbfs. Now that page faults have been implemented it is now possible to fully support truncate.
ye!
--- 2.6.20/./fs/hugetlbfs/inode.c 2007-02-04 12:44:54.000000000 -0600 +++ 2.6.20-htrunc/./fs/hugetlbfs/inode.c 2007-02-05 13:02:00.000000000 -0600 + if (hugetlb_reserve_pages(inode, inode->i_size >> HPAGE_SHIFT, + offset >> HPAGE_SHIFT)) + goto out_mem; + i_size_write(inode, offset);
hugetlb_reserve_pages() is used to reserve pages for shared mapping and is used only for the size of mapping at the time of mmap(). We shouldn't call this function when expanding hugetlb file. - Ken - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/