Commit 0ef625bba6fb ("vfs: support statx(..., NULL, AT_EMPTY_PATH, ...)") added support for passing in NULL when AT_EMPTY_PATH is given, improving performance when statx is used for fetching stat informantion from a given fd, which is especially important for 32-bit platforms. This commit also improved the performance when an empty string is given by short-circuiting the handling of such paths.
This series is based on the commits in the Linus’ tree. Modifications are applied to vfs_statx_path(). In the original patch, vfs_statx_path() was created to warp around the call to vfs_getattr() after filename_lookup() in vfs_statx(). Since the coresponding code is different in 6.6, the content of vfs_statx_path() is modified to match this.
Tested-by: Xi Ruoyao xry111@xry111.site Signed-off-by: Miao Wang shankerwangmiao@gmail.com --- Christian Brauner (3): file: add fd_raw cleanup class fs: new helper vfs_empty_path() stat: use vfs_empty_path() helper
Mateusz Guzik (1): vfs: support statx(..., NULL, AT_EMPTY_PATH, ...)
fs/internal.h | 14 +++++++ fs/namespace.c | 13 ------ fs/stat.c | 113 ++++++++++++++++++++++++++++++++++++--------------- include/linux/file.h | 1 + include/linux/fs.h | 17 ++++++++ 5 files changed, 112 insertions(+), 46 deletions(-) --- base-commit: 6d1dc55b5bab93ef868d223b740d527ee7501063 change-id: 20240918-statx-stable-linux-6-6-y-02566b94440d
Best regards,