From: Zhi Yong Wu <wu...@linux.vnet.ibm.com> HI, folks
It's time to post out the first formal version, welcome to any constructive comment, thanks. If anyone is interested in playing with it, you can get this patchset from my dev git on github: git://github.com/wuzhy/kernel.git xfs_tmpfile The patchset was tests agaist the code snippet from Andy Lutomirski and other test cases: http://lwn.net/Articles/562296/ If you have any other better test cases, please let me know, thanks. #include <stdio.h> #include <err.h> #include <fcntl.h> #include <unistd.h> #include <string.h> #define __O_TMPFILE 020000000 #define O_DIRECTORY 0200000 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY) #define AT_EMPTY_PATH 0x1000 int main(int argc, char **argv) { char buf[128]; if (argc != 3) errx(1, "Usage: flinktest PATH linkat|proc"); int fd = open(".", O_TMPFILE | O_RDWR, 0600); if (fd == -1) err(1, "O_TMPFILE"); else printf("fd #: %d\n", fd); write(fd, "test", 4); if (!strcmp(argv[2], "linkat")) { if (linkat(fd, "", AT_FDCWD, argv[1], AT_EMPTY_PATH) != 0) err(1, "linkat"); } else if (!strcmp(argv[2], "proc")) { sprintf(buf, "/proc/self/fd/%d", fd); if (linkat(AT_FDCWD, buf, AT_FDCWD, argv[1], AT_SYMLINK_FOLLOW) != 0) err(1, "linkat"); } else { errx(1, "invalid mode"); } return 0; } Changelog from rfc: - Addressed the comments from Dave Chinner and Christoph Hellwig. Zhi Yong Wu (5): xfs: factor prid related codes into xfs_get_initial_prid() xfs: adjust the interface of xfs_qm_vop_dqalloc() xfs: add xfs_create_tmpfile() for O_TMPFILE support xfs: add a new method xfs_vn_tmpfile() xfs: allow linkat() on O_TMPFILE files fs/xfs/xfs_inode.c | 142 ++++++++++++++++++++++++++++++++++++++++++++--- fs/xfs/xfs_inode.h | 2 + fs/xfs/xfs_ioctl.c | 2 +- fs/xfs/xfs_iops.c | 25 ++++++++- fs/xfs/xfs_qm.c | 50 ++++++++++------ fs/xfs/xfs_quota.h | 6 +- fs/xfs/xfs_shared.h | 4 +- fs/xfs/xfs_symlink.c | 2 +- fs/xfs/xfs_trans_resv.c | 51 +++++++++++++++++ fs/xfs/xfs_trans_resv.h | 4 + 10 files changed, 255 insertions(+), 33 deletions(-) -- 1.7.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
