[PATCH 0/5] vfs: track the dentry name length in name_snapshot

Jeff Layton
2019-04-26T18:28:53Z

name_snapshot will snapshot the current contents of a dentry's name for
later consumption. Several of those users end up needing to do a strlen
on the resulting string later. We already have that info in the original
dentry though, so we can do this a bit more efficiently by stuffing the
name length into the name_snapshot as well.

This is not well tested, but it built and booted. Do we have a testsuite
that exercises the fsnotify code, in particular?

Jeff Layton (5):
dcache: track the length of the string in struct name_snapshot
fsnotify: have fsnotify_move take a struct qstr instead of a string
fsnotify: have fsnotify() take a qstr instead of a string
fsnotify: change ->handle_event and send_to_group to take a qstr
audit: fix audit_compare_dname_path to take a qstr

fs/dcache.c | 11 +++++++----
fs/debugfs/inode.c | 2 +-
fs/kernfs/file.c | 6 ++++--
fs/namei.c | 4 ++--
fs/notify/dnotify/dnotify.c | 2 +-
fs/notify/fanotify/fanotify.c | 2 +-
fs/notify/fsnotify.c | 8 ++++----
fs/notify/inotify/inotify.h | 2 +-
fs/notify/inotify/inotify_fsnotify.c | 6 +++---
fs/overlayfs/export.c | 2 +-
include/linux/dcache.h | 2 +-
include/linux/fsnotify.h | 17 ++++++++---------
include/linux/fsnotify_backend.h | 6 +++---
kernel/audit.h | 3 ++-
kernel/audit_fsnotify.c | 5 +++--
kernel/audit_tree.c | 2 +-
kernel/audit_watch.c | 4 ++--
kernel/auditfilter.c | 7 ++++---
kernel/auditsc.c | 7 +++----
19 files changed, 52 insertions(+), 46 deletions(-)

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2.20.1