[Virtio-fs] [PATCH v3 0/6] fuse: Implement FUSE_HANDLE_KILLPRIV_V2 and enable SB_NOSEC
Vivek Goyal
vgoyal at redhat.com
Fri Oct 9 18:15:06 UTC 2020
Hi All,
Please find attached V3 of the patches to enable SB_NOSEC for fuse. I
posted V1 and V2 here.
v2:
https://lore.kernel.org/linux-fsdevel/20200916161737.38028-1-vgoyal@redhat.com/
v1:
https://lore.kernel.org/linux-fsdevel/20200724183812.19573-1-vgoyal@redhat.com/
Changes since v2:
- Based on Miklos's feedback, dropped a patch where we send ATTR_MODE as
that's racy. To help the case of writeback_cache with killpriv_v2, I
fallback to a synchronous WRITE if suid/sgid is set on file.
I have generated these patches on top of.
https://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git/log/?h=for-nex
+t
I have taken care of feedback from last round. For the case of random
write peformance has jumped from 50MB/s to 250MB/s. So I am really
looking forward to these changes so that fuse/virtiofs performance
can be improved for direct random writes.
Thanks
Vivek
Vivek Goyal (6):
fuse: Introduce the notion of FUSE_HANDLE_KILLPRIV_V2
fuse: Set FUSE_WRITE_KILL_PRIV in cached write path
fuse: setattr should set FATTR_KILL_PRIV upon size change
fuse: Don't send ATTR_MODE to kill suid/sgid for handle_killpriv_v2
fuse: Add a flag FUSE_OPEN_KILL_PRIV for open() request
fuse: Support SB_NOSEC flag to improve direct write performance
fs/fuse/dir.c | 4 +++-
fs/fuse/file.c | 16 +++++++++++++++-
fs/fuse/fuse_i.h | 6 ++++++
fs/fuse/inode.c | 17 ++++++++++++++++-
include/uapi/linux/fuse.h | 18 +++++++++++++++++-
5 files changed, 57 insertions(+), 4 deletions(-)
--
2.25.4
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