linux.git/fs/ocfs2/suballoc.c, branch v3.11

ocfs2: remove duplicated mlog_errno() in ocfs2_relink_block_group

2013-07-03T23:07:24+00:00

Cc: Jie Liu 
Cc: Joel Becker 
Cc: Mark Fasheh 
Cc: Sunil Mushran 
Cc: Younger Liu 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ocfs2: rework transaction rollback in ocfs2_relink_block_group()

2013-07-03T23:07:24+00:00

In ocfs2_relink_block_group(), we roll back all those changes if notify
intent to modify buffers for metadata update failed even if the relevant
buffer has not yet been modified/got dirty at that point, that are not
quite right because of:

 - None buffer has been modified/dirty if failed to call
   ocfs2_journal_access_gd() against the previous block group buffer

 - Only the previous block group buffer has got dirty if failed to call
   ocfs2_journal_access_gd() against the block group buffer

 - There is no need to roll back the change for file entry buffer at all

Those problems will not cause anything wrong but unnecessary.  This
patch fix them and kill the useless bg_ptr variable as well.

Signed-off-by: Jie Liu 
Cc: Younger Liu 
Cc: Sunil Mushran 
Cc: Mark Fasheh 
Cc: Joel Becker 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ocfs2: ac->ac_allow_chain_relink=0 won't disable group relink

2013-02-28T03:10:09+00:00

ocfs2_block_group_alloc_discontig() disables chain relink by setting
ac->ac_allow_chain_relink = 0 because it grabs clusters from multiple
cluster groups.

It doesn't keep the credits for all chain relink,but
ocfs2_claim_suballoc_bits overrides this in this call trace:
ocfs2_block_group_claim_bits()->ocfs2_claim_clusters()->
__ocfs2_claim_clusters()->ocfs2_claim_suballoc_bits()
ocfs2_claim_suballoc_bits set ac->ac_allow_chain_relink = 1; then call
ocfs2_search_chain() one time and disable it again, and then we run out
of credits.

Fix is to allow relink by default and disable it in
ocfs2_block_group_alloc_discontig.

Without this patch, End-users will run into a crash due to run out of
credits, backtrace like this:

  RIP: 0010:[]  []
  jbd2_journal_dirty_metadata+0x164/0x170 [jbd2]
  RSP: 0018:ffff8801b919b5b8  EFLAGS: 00010246
  RAX: 0000000000000000 RBX: ffff88022139ddc0 RCX: ffff880159f652d0
  RDX: ffff880178aa3000 RSI: ffff880159f652d0 RDI: ffff880087f09bf8
  RBP: ffff8801b919b5e8 R08: 0000000000000000 R09: 0000000000000000
  R10: 0000000000001e00 R11: 00000000000150b0 R12: ffff880159f652d0
  R13: ffff8801a0cae908 R14: ffff880087f09bf8 R15: ffff88018d177800
  FS:  00007fc9b0b6b6e0(0000) GS:ffff88022fd40000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
  CR2: 000000000040819c CR3: 0000000184017000 CR4: 00000000000006e0
  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  Process dd (pid: 9945, threadinfo ffff8801b919a000, task ffff880149a264c0)
  Call Trace:
    ocfs2_journal_dirty+0x2f/0x70 [ocfs2]
    ocfs2_relink_block_group+0x111/0x480 [ocfs2]
    ocfs2_search_chain+0x455/0x9a0 [ocfs2]
    ...

Signed-off-by: Xiaowei.Hu 
Reviewed-by: Srinivas Eeda 
Cc: Mark Fasheh 
Cc: Joel Becker 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ocfs2: ->e_leaf_clusters endianness breakage

2012-04-13T16:31:43+00:00

le16, not le32...

Signed-off-by: Al Viro

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

ocfs2: Remove DISK_ALLOC from masklog.

2011-02-22T00:01:27+00:00

Since all 4 files, localalloc.c, suballoc.c, alloc.c and
resize.c, which use DISK_ALLOC are changed to trace events,
Remove masklog DISK_ALLOC totally.

Signed-off-by: Tao Ma

ocfs2: Remove mlog(0) from fs/ocfs2/suballoc.c

2011-02-22T00:22:33+00:00

This is the 3rd step to remove the debug info of DISK_ALLOC.

Signed-off-by: Tao Ma

ocfs2: Remove EXIT from masklog.

2011-03-07T08:43:21+00:00

mlog_exit is used to record the exit status of a function.
But because it is added in so many functions, if we enable it,
the system logs get filled up quickly and cause too much I/O.
So actually no one can open it for a production system or even
for a test.

This patch just try to remove it or change it. So:
1. if all the error paths already use mlog_errno, it is just removed.
   Otherwise, it will be replaced by mlog_errno.
2. if it is used to print some return value, it is replaced with
   mlog(0,...).
mlog_exit_ptr is changed to mlog(0.
All those mlog(0,...) will be replaced with trace events later.

Signed-off-by: Tao Ma

ocfs2: Remove ENTRY from masklog.

2011-02-21T03:10:44+00:00

ENTRY is used to record the entry of a function.
But because it is added in so many functions, if we enable it,
the system logs get filled up quickly and cause too much I/O.
So actually no one can open it for a production system or even
for a test.

So for mlog_entry_void, we just remove it.
for mlog_entry(...), we replace it with mlog(0,...), and they
will be replace by trace event later.

Signed-off-by: Tao Ma

tree-wide: fix comment/printk typos

2010-11-01T19:38:34+00:00

"gadget", "through", "command", "maintain", "maintain", "controller", "address",
"between", "initiali[zs]e", "instead", "function", "select", "already",
"equal", "access", "management", "hierarchy", "registration", "interest",
"relative", "memory", "offset", "already",

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Jiri Kosina