Jan,
Even since we did the FMODE_NONOTIFY optimization, it really bothered me
that we do not optimize out FAN_ACCESS_PERM, which I consider to be
unused baggage of the legacy API.
I finally figured out a way to get rid of this unneeded overhead of
all the read APIs.
Along the way, also added a trivial optimization for non-applicable
FAN_ACCESS_PERM on readdir and prepared the code towards adding
pre-dir-content events.
This passes the LTP tests, but please take a good look to see if I
missed anything.
Thanks,
Amir.
Amir Goldstein (2):
fsnotify: merge file_set_fsnotify_mode_from_watchers() with open perm
hook
fsnotify: optimize FMODE_NONOTIFY_PERM for the common cases
fs/file_table.c | 2 +-
fs/notify/fsnotify.c | 97 +++++++++++++++++++++-----------
fs/open.c | 6 +-
include/linux/fs.h | 6 +-
include/linux/fsnotify.h | 35 ++----------
include/linux/fsnotify_backend.h | 6 +-
6 files changed, 80 insertions(+), 72 deletions(-)
--
2.43.0
