linux-toradex.git/fs/xfs/xfs_log.c, branch v3.2.37

xfs: fix the logspace waiting algorithm

2011-12-06T20:19:47+00:00

Apply the scheme used in log_regrant_write_log_space to wake up any other
threads waiting for log space before the newly added one to
log_regrant_write_log_space as well, and factor the code into readable
helpers.  For each of the queues we have add two helpers:

 - one to try to wake up all waiting threads.  This helper will also be
   usable by xfs_log_move_tail once we remove the current opportunistic
   wakeups in it.
 - one to sleep on t_wait until enough log space is available, loosely
   modelled after Linux waitqueues.
 
And use them to reimplement the guts of log_regrant_write_log_space and
log_regrant_write_log_space.  These two function now use one and the same
algorithm for waiting on log space instead of subtly different ones before,
with an option to completely unify them in the near future.

Also move the filesystem shutdown handling to the common caller given
that we had to touch it anyway.

Based on hard debugging and an earlier patch from
Chandra Seetharaman .

Signed-off-by: Christoph Hellwig 
Reviewed-by: Chandra Seetharaman 
Tested-by: Chandra Seetharaman 
Signed-off-by: Ben Myers

xfs: constify xfs_item_ops

2011-11-08T16:48:23+00:00

The log item ops aren't nessecarily the biggest exploit vector, but marking
them const is easy enough.  Also remove the unused xfs_item_ops_t typedef
while we're at it.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Dave Chinner 
Reviewed-by: Alex Elder

xfs: clean up xfs_ioerror_alert

2011-10-12T02:15:10+00:00

Instead of passing the block number and mount structure explicitly
get them off the bp and fix make the argument order more natural.

Also move it to xfs_buf.c and stop printing the device name given
that we already get the fs name as part of xfs_alert, and we know
what device is operates on because of the caller that gets printed,
finally rename it to xfs_buf_ioerror_alert and pass __func__ as
argument where it makes sense.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Dave Chinner 
Signed-off-by: Alex Elder

xfs: clean up buffer allocation

2011-10-12T02:15:10+00:00

Change _xfs_buf_initialize to allocate the buffer directly and rename it to
xfs_buf_alloc now that is the only buffer allocation routine.  Also remove
the xfs_buf_deallocate wrapper around the kmem_zone_free calls for buffers.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Dave Chinner 
Signed-off-by: Alex Elder

xfs: remove XFS_BUF_STALE and XFS_BUF_SUPER_STALE

2011-10-12T02:15:10+00:00

Signed-off-by: Christoph Hellwig 
Reviewed-by: Dave Chinner 
Signed-off-by: Alex Elder

xfs: Remove the macro XFS_BUF_SET_PTR

2011-07-25T20:03:17+00:00

Remove the definition and usages of the macro XFS_BUF_SET_PTR.

Signed-off-by: Chandra Seetharaman 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Alex Elder

xfs: Remove the macro XFS_BUF_PTR

2011-07-25T20:03:13+00:00

Remove the definition and usages of the macro XFS_BUF_PTR.

Signed-off-by: Chandra Seetharaman 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Alex Elder

xfs: Remove macro XFS_BUF_BUSY and family

2011-07-25T20:03:00+00:00

Remove the definitions and uses of the macros XFS_BUF_BUSY,
XFS_BUF_UNBUSY, and XFS_BUF_ISBUSY.

Signed-off-by: Chandra Seetharaman 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Alex Elder

xfs: Remove the macro XFS_BUF_ERROR and family

2011-07-25T19:57:46+00:00

Remove the definitions and usage of the macros XFS_BUF_ERROR,
XFS_BUF_GETERROR and XFS_BUF_ISERROR.

Signed-off-by: Chandra Seetharaman 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Alex Elder

xfs: remove wrappers around b_iodone

2011-07-13T11:43:49+00:00

Signed-off-by: Christoph Hellwig 
Reviewed-by: Alex Elder 
Reviewed-by: Dave Chinner