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  1. 06 12月, 2009 30 次提交
  3. 03 12月, 2009 10 次提交
    • S
      GFS2: Fix glock refcount issues · 26bb7505
      由 Steven Whitehouse 提交于 
      This patch fixes some ref counting issues. Firstly by moving
the point at which we drop the ref count after a dlm lock
operation has completed we ensure that we never call
gfs2_glock_hold() on a lock with a zero ref count.

Secondly, by using atomic_dec_and_lock() in gfs2_glock_put()
we ensure that at no time will a glock with zero ref count
appear on the lru_list. That means that we can remove the
check for this in our shrinker (which was racy).
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      26bb7505
    • W
      writeback: remove unused nonblocking and congestion checks (gfs2) · c29cd900
      由 Wu Fengguang 提交于 
      No one is calling wb_writeback and write_cache_pages with
wbc.nonblocking=1 any more. And lumpy pageout will want to do
nonblocking writeback without the congestion wait.
Signed-off-by: NWu Fengguang <fengguang.wu@intel.com>
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      c29cd900
    • B
      GFS2: drop rindex glock to refresh rindex list · 9ae3c6de
      由 Benjamin Marzinski 提交于 
      When a gfs2 filesystem is grown, it needs to rebuild the rindex list to be able
to use the new space.  gfs2 does this when the rindex is marked not uptodate,
which happens when the rindex glock is dropped.  However, on a single node
setup, there is never any reason to drop the rindex glock, so gfs2 never
invalidates the the rindex. This patch makes gfs2 automatically drop the
rindex glock after filesystem grows, so it can refresh the rindex list.
Signed-off-by: NBenjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      9ae3c6de
    • S
      GFS2: Tag all metadata with jid · 0ab7d13f
      由 Steven Whitehouse 提交于 
      There are two spare field in the header common to all GFS2
metadata. One is just the right size to fit a journal id
in it, and this patch updates the journal code so that each
time a metadata block is modified, we tag it with the journal
id of the node which is performing the modification.

The reason for this is that it should make it much easier to
debug issues which arise if we can tell which node was the
last to modify a particular metadata block.

Since the field is updated before the block is written into
the journal, each journal should only contain metadata which
is tagged with its own journal id. The one exception to this
is the journal header block, which might have a different node's
id in it, if that journal was recovered by another node in the
cluster.

Thus each journal will contain a record of which nodes recovered
it, via the journal header.

The other field in the metadata header could potentially be
used to hold information about what kind of operation was
performed, but for the time being we just zero it on each
transaction so that if we use it for that in future, we'll
know that the information (where it exists) is reliable.

I did consider using the other field to hold the journal
sequence number, however since in GFS2's journaling we write
the modified data into the journal and not the original
data, this gives no information as to what action caused the
modification, so I think we can probably come up with a better
use for those 64 bits in the future.
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      0ab7d13f
    • S
      GFS2: Locking order fix in gfs2_check_blk_state · 2c776349
      由 Steven Whitehouse 提交于 
      In some cases we already have the rindex lock when
we enter this function.
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      2c776349
    • S
      GFS2: Remove dirent_first() function · 1579343a
      由 Steven Whitehouse 提交于 
      This function only had one caller left, and that caller only
called it for leaf blocks, hence one branch of the "if" was
never taken. In addition the call to get_left had already
verified the metadata type, so the function can be reduced
to a single line of code in its caller.
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      1579343a
    • S
      GFS2: Display nobarrier option in /proc/mounts · cdcfde62
      由 Steven Whitehouse 提交于 
      Since the default is barriers on, this only displays the
nobarrier option when that is active.
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      cdcfde62
    • C
      GFS2: add barrier/nobarrier mount options · f25934c5
      由 Christoph Hellwig 提交于 
      Currently gfs2 issues barrier unconditionally.  There are various reasons
to disable them, be that just for testing or for stupid devices flushing
large battert backed caches.  Add a nobarrier option that matches xfs and
btrfs for this.  Also add a symmetric barrier option to turn it back on
at remount time.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      f25934c5
    • B
      GFS2: remove division from new statfs code · c14f5735
      由 Benjamin Marzinski 提交于 
      It's not necessary to do any 64bit division for the statfs sync code, so
remove it.
Signed-off-by: NBenjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      c14f5735
    • B
      GFS2: Improve statfs and quota usability · 3d3c10f2
      由 Benjamin Marzinski 提交于 
      GFS2 now has three new mount options, statfs_quantum, quota_quantum and
statfs_percent.  statfs_quantum and quota_quantum simply allow you to
set the tunables of the same name.  Setting setting statfs_quantum to 0
will also turn on the statfs_slow tunable.  statfs_percent accepts an
integer between 0 and 100.  Numbers between 1 and 100 will cause GFS2 to
do any early sync when the local number of blocks free changes by at
least statfs_percent from the totoal number of blocks free.  Setting
statfs_percent to 0 disables this.
Signed-off-by: NBenjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
      3d3c10f2