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  1. 12 12月, 2009 22 次提交
  3. 11 12月, 2009 2 次提交
  5. 10 12月, 2009 11 次提交
    • J
      quota: Implement quota format with 64-bit space and inode limits · 498c6015
      由 Jan Kara 提交于 
      So far the maximum quota space limit was 4TB. Apparently this isn't enough
for Lustre guys anymore. So implement new quota format which raises block
limits to 2^64 bytes. Also store number of inodes and inode limits in
64-bit variables as 2^32 files isn't that insanely high anymore.

The first version of the patch has been developed by Andrew Perepechko
<Andrew.Perepechko@Sun.COM>.

CC: Andrew.Perepechko@Sun.COM
Signed-off-by: NJan Kara <jack@suse.cz>
      498c6015
    • J
      quota: Move definition of QFMT_OCFS2 to linux/quota.h · 30673930
      由 Jan Kara 提交于 
      Move definition of this constant to linux/quota.h so that it
cannot clash with other format IDs.

CC: Joel Becker <joel.becker@oracle.com>
Signed-off-by: NJan Kara <jack@suse.cz>
      30673930
    • A
      ext3: Unify log messages in ext3 · 4cf46b67
      由 Alexey Fisher 提交于 
      Make messages produced by ext3 more unified. It should be
easy to parse.

dmesg before patch:
[ 4893.684892] reservations ON
[ 4893.684896] xip option not supported
[ 4893.684964] EXT3-fs warning: maximal mount count reached, running
e2fsck is recommended

dmesg after patch:
[  873.300792] EXT3-fs (loop0): using internal journaln
[  873.300796] EXT3-fs (loop0): mounted filesystem with writeback data mode
[  924.163657] EXT3-fs (loop0): error: can't find ext3 filesystem on dev loop0.
[  723.755642] EXT3-fs (loop0): error: bad blocksize 8192
[  357.874687] EXT3-fs (loop0): error: no journal found. mounting ext3 over ext2?
[  873.300764] EXT3-fs (loop0): warning: maximal mount count reached, running e2fsck is recommended
[  924.163657] EXT3-fs (loop0): error: can't find ext3 filesystem on dev loop0.
Signed-off-by: NAlexey Fisher <bug-track@fisher-privat.net>
Signed-off-by: NJan Kara <jack@suse.cz>
      4cf46b67
    • J
      ext2: Explicitly assign values to on-disk enum of filetypes · ad888a1f
      由 Jan Blunck 提交于 
      It is somewhat dangerous to use a straight enum here, because this will
reassign values of later variables if one of the earlier ones is removed.
Signed-off-by: NJan Blunck <jblunck@suse.de>
Cc: Andreas Dilger <adilger@sun.com>
Signed-off-by: NJan Kara <jack@suse.cz>
      ad888a1f
    • A
      const: struct quota_format_ops · 1472da5f
      由 Alexey Dobriyan 提交于 
      Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NJan Kara <jack@suse.cz>
      1472da5f
    • C
      kill wait_on_page_writeback_range · 94004ed7
      由 Christoph Hellwig 提交于 
      All callers really want the more logical filemap_fdatawait_range interface,
so convert them to use it and merge wait_on_page_writeback_range into
filemap_fdatawait_range.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJan Kara <jack@suse.cz>
      94004ed7
    • H
      hrtimer: move timer stats helper functions to hrtimer.c · 5f201907
      由 Heiko Carstens 提交于 
      There is no reason to make timer_stats_hrtimer_set_start_info and
friends visible to the rest of the kernel. So move all of them to
hrtimer.c.  Also make timer_stats_hrtimer_set_start_info a static
inline function so it gets inlined and we avoid another function call.
Based on a patch by Thomas Gleixner.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
LKML-Reference: <20091210095629.GC4144@osiris.boeblingen.de.ibm.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      5f201907
    • T
      hrtimer: Tune hrtimer_interrupt hang logic · 41d2e494
      由 Thomas Gleixner 提交于 
      The hrtimer_interrupt hang logic adjusts min_delta_ns based on the
execution time of the hrtimer callbacks.

This is error-prone for virtual machines, where a guest vcpu can be
scheduled out during the execution of the callbacks (and the callbacks
themselves can do operations that translate to blocking operations in
the hypervisor), which in can lead to large min_delta_ns rendering the
system unusable.

Replace the current heuristics with something more reliable. Allow the
interrupt code to try 3 times to catch up with the lost time. If that
fails use the total time spent in the interrupt handler to defer the
next timer interrupt so the system can catch up with other things
which got delayed. Limit that deferment to 100ms.

The retry events and the maximum time spent in the interrupt handler
are recorded and exposed via /proc/timer_list

Inspired by a patch from Marcelo.
Reported-by: NMichael Tokarev <mjt@tls.msk.ru>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Tested-by: NMarcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org
      41d2e494
    • M
      sched: Mark sched_clock() as notrace · 1bbfa6f2
      由 Mike Frysinger 提交于 
      The core ftrace code (trace_clock_local) calls sched_clock()
directly, so we don't want to recurisvely trigger the ftrace
code.  Rather than update every sched_clock() definition, tag
the prototype for everyone as notrace.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1260407223-10900-1-git-send-email-vapier@gentoo.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      1bbfa6f2
    • J
      tracing: Add full state to trace_seq · d184b31c
      由 Johannes Berg 提交于 
      The trace_seq buffer might fill up, and right now one needs to check the
return value of each printf into the buffer to check for that.

Instead, have the buffer keep track of whether it is full or not, and
reject more input if it is full or would have overflowed with an input
that wasn't added.

Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
      d184b31c
    • S
      tracing: Buffer the output of seq_file in case of filled buffer · a63ce5b3
      由 Steven Rostedt 提交于 
      If the seq_read fills the buffer it will call s_start again on the next
itertation with the same position. This causes a problem with the
function_graph tracer because it consumes the iteration in order to
determine leaf functions.

What happens is that the iterator stores the entry, and the function
graph plugin will look at the next entry. If that next entry is a return
of the same function and task, then the function is a leaf and the
function_graph plugin calls ring_buffer_read which moves the ring buffer
iterator forward (the trace iterator still points to the function start
entry).

The copying of the trace_seq to the seq_file buffer will fail if the
seq_file buffer is full. The seq_read will not show this entry.
The next read by userspace will cause seq_read to again call s_start
which will reuse the trace iterator entry (the function start entry).
But the function return entry was already consumed. The function graph
plugin will think that this entry is a nested function and not a leaf.

To solve this, the trace code now checks the return status of the
seq_printf (trace_print_seq). If the writing to the seq_file buffer
fails, we set a flag in the iterator (leftover) and we do not reset
the trace_seq buffer. On the next call to s_start, we check the leftover
flag, and if it is set, we just reuse the trace_seq buffer and do not
call into the plugin print functions.

Before this patch:

 2)               |      fput() {
 2)               |        __fput() {
 2)   0.550 us    |          inotify_inode_queue_event();
 2)               |          __fsnotify_parent() {
 2)   0.540 us    |          inotify_dentry_parent_queue_event();

After the patch:

 2)               |      fput() {
 2)               |        __fput() {
 2)   0.550 us    |          inotify_inode_queue_event();
 2)   0.548 us    |          __fsnotify_parent();
 2)   0.540 us    |          inotify_dentry_parent_queue_event();

[
  Updated the patch to fix a missing return 0 from the trace_print_seq()
  stub when CONFIG_TRACING is disabled.
Reported-by: NIngo Molnar <mingo@elte.hu>
]
Reported-by: NJiri Olsa <jolsa@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
      a63ce5b3
  7. 09 12月, 2009 5 次提交