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@xxxxxxxxxxx>
Signed-off-by: Miao Wang <shankerwangmiao@xxxxxxxxx>
---
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,
--
Miao Wang <shankerwangmiao@xxxxxxxxx>
