linux-kernel - [RFC v3 0/4] fs: Add generic file system event notifications

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Message-id: <1434460173-18427-1-git-send-email-b.michalska@samsung.com>
Date:	Tue, 16 Jun 2015 15:09:29 +0200
From:	Beata Michalska <b.michalska@...sung.com>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-api@...r.kernel.org
Cc:	greg@...ah.com, jack@...e.cz, tytso@....edu,
	adilger.kernel@...ger.ca, hughd@...gle.com, lczerner@...hat.com,
	hch@...radead.org, linux-ext4@...r.kernel.org, linux-mm@...ck.org,
	kyungmin.park@...sung.com, kmpark@...radead.org
Subject: [RFC v3 0/4] fs: Add generic file system event notifications

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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