Hi All,
First of all, apologies for the delay: illness ruled out my plans
for having this out for a review as intended.
Anyway this is an updated version of the patchset for generic filesystem
events interface [1][2], hopefully handling issues raised during the previous
run.
Changes from v2:
- Switched to kref for reference counting
- Support for the events has been made optional (config option)
- Use dynamically assigned id for multicast group instead of
using static one
- Verify if there are any net listeners prior to sending the msg
- Make the interface more namespace-aware (handling mount dropped
and showing the content of config file). As for the network
namespaces - as before only the init net namespace is being
supported.
Changes from v1:
- Improved synchronization: switched to RCU accompanied with
ref counting mechanism
- Limiting scope of supported event types along with default
event codes
- Slightly modified configuration (event types followed by arguments
where required)
- Updated documentation
- Unified naming for netlink attributes
- Updated netlink message format to include dev minor:major numbers
despite the filesystem type
- Switched to single cmd id for messages
- Removed the per-config-entry ids
---
[1] https://lkml.org/lkml/2015/4/15/46
[2] https://lkml.org/lkml/2015/4/27/244
---
Beata Michalska (4):
fs: Add generic file system event notifications
ext4: Add helper function to mark group as corrupted
ext4: Add support for generic FS events
shmem: Add support for generic FS events
Documentation/filesystems/events.txt | 232 ++++++++++
fs/Kconfig | 2 +
fs/Makefile | 1 +
fs/events/Kconfig | 7 +
fs/events/Makefile | 5 +
fs/events/fs_event.c | 809 ++++++++++++++++++++++++++++++++++
fs/events/fs_event.h | 22 +
fs/events/fs_event_netlink.c | 104 +++++
fs/ext4/balloc.c | 25 +-
fs/ext4/ext4.h | 10 +
fs/ext4/ialloc.c | 5 +-
fs/ext4/inode.c | 2 +-
fs/ext4/mballoc.c | 17 +-
fs/ext4/resize.c | 1 +
fs/ext4/super.c | 39 ++
fs/namespace.c | 1 +
include/linux/fs.h | 6 +-
include/linux/fs_event.h | 72 +++
include/uapi/linux/Kbuild | 1 +
include/uapi/linux/fs_event.h | 58 +++
mm/shmem.c | 33 +-
21 files changed, 1419 insertions(+), 33 deletions(-)
create mode 100644 Documentation/filesystems/events.txt
create mode 100644 fs/events/Kconfig
create mode 100644 fs/events/Makefile
create mode 100644 fs/events/fs_event.c
create mode 100644 fs/events/fs_event.h
create mode 100644 fs/events/fs_event_netlink.c
create mode 100644 include/linux/fs_event.h
create mode 100644 include/uapi/linux/fs_event.h
--
1.7.9.5
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