linux-kernel - [PATCH 0/8] [GIT PULL] seq_file: Add seq_has

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Date:	Wed, 05 Nov 2014 14:24:26 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	linux-kernel@...r.kernel.org
Cc:	Al Viro <viro@...IV.linux.org.uk>, Joe Perches <joe@...ches.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 0/8] [GIT PULL] seq_file: Add seq_has_overflowed() and start using it


Al,

I'm looking to clean up the seq_file code and to eventually merge the
trace_seq code with seq_file as well, since they basically do the same thing.

Part of this process is to remove the return code of seq_printf() and friends
as they are rather inconsistent. It is better to use the new function
seq_has_overflowed() if you want to stop processing when the buffer
is full. Note, if the buffer is full, the seq_file code will throw away
the contents, allocate a bigger buffer, and then call your code again
to fill in the data. The only thing that breaking out of the function
early does is to save a little time which is probably never noticed.

I started with patches from Joe Perches and modified them as well.
There's many more places that need to be updated before we can convert
seq_printf() and friends to return void. But this patch set introduces
the seq_has_overflowed() and does some initial updates.

Please pull the latest trace-seq-file-cleanup tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-seq-file-cleanup

Tag SHA1: d82a9bf9340e6ede47454c8a7d849adf140a30b1
Head SHA1: 9761536e1d9e9e1f325fb04d4ad46b15a39eb94a


Joe Perches (6):
      seq_file: Rename seq_overflow() to seq_has_overflowed() and make public
      netfilter: Convert print_tuple functions to return void
      dlm: Remove seq_printf() return checks and use seq_has_overflowed()
      dlm: Use seq_puts() instead of seq_printf() for constant strings
      fs: Convert show_fdinfo functions to void
      debugfs: Have debugfs_print_regs32() return void

Steven Rostedt (Red Hat) (2):
      netfilter: Remove return values for print_conntrack callbacks
      netfilter: Remove checks of seq_printf() return values

----
 Documentation/filesystems/debugfs.txt              |   2 +-
 Documentation/filesystems/seq_file.txt             |  22 +-
 Documentation/filesystems/vfs.txt                  |   2 +-
 drivers/net/tun.c                                  |   4 +-
 fs/debugfs/file.c                                  |  15 +-
 fs/dlm/debug_fs.c                                  | 263 ++++++++++-----------
 fs/eventfd.c                                       |   9 +-
 fs/eventpoll.c                                     |  13 +-
 fs/notify/fdinfo.c                                 |  78 +++---
 fs/notify/fdinfo.h                                 |   4 +-
 fs/proc/fd.c                                       |   3 +-
 fs/seq_file.c                                      |  15 +-
 fs/signalfd.c                                      |   4 +-
 fs/timerfd.c                                       |  27 ++-
 include/linux/debugfs.h                            |   7 +-
 include/linux/fs.h                                 |   2 +-
 include/linux/seq_file.h                           |  15 ++
 include/net/netfilter/nf_conntrack_core.h          |   2 +-
 include/net/netfilter/nf_conntrack_l3proto.h       |   4 +-
 include/net/netfilter/nf_conntrack_l4proto.h       |   6 +-
 net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c     |   6 +-
 .../netfilter/nf_conntrack_l3proto_ipv4_compat.c   |  53 +++--
 net/ipv4/netfilter/nf_conntrack_proto_icmp.c       |  10 +-
 net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c     |   6 +-
 net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c     |  10 +-
 net/netfilter/nf_conntrack_l3proto_generic.c       |   5 +-
 net/netfilter/nf_conntrack_proto_dccp.c            |  14 +-
 net/netfilter/nf_conntrack_proto_generic.c         |   5 +-
 net/netfilter/nf_conntrack_proto_gre.c             |  18 +-
 net/netfilter/nf_conntrack_proto_sctp.c            |  14 +-
 net/netfilter/nf_conntrack_proto_tcp.c             |  14 +-
 net/netfilter/nf_conntrack_proto_udp.c             |  10 +-
 net/netfilter/nf_conntrack_proto_udplite.c         |  10 +-
 net/netfilter/nf_conntrack_standalone.c            |  77 +++---
 net/netfilter/nf_log.c                             |  30 +--
 net/netfilter/nfnetlink_queue_core.c               |  13 +-
 net/netfilter/x_tables.c                           |  19 +-
 net/netfilter/xt_hashlimit.c                       |  36 ++-
 38 files changed, 410 insertions(+), 437 deletions(-)
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