SGI-PV: 904196
SGI-Modid: xfs-linux-melb:xfs-kern:25509a
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25506a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25505a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25504a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25503a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25502a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25501a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25500a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25499a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25498a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25497a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25496a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25495a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25494a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25493a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25492a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25491a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25490a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25489a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25487a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25486a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25485a
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:25484a
Signed-off-by: Nathan Scott <nathans@sgi.com>

else we can hit a delalloc-extents-via-direct-io BUG.

SGI-PV: 949916
SGI-Modid: xfs-linux-melb:xfs-kern:25483a
Signed-off-by: Nathan Scott <nathans@sgi.com>

another ENOSPC condition.

SGI-PV: 950784
SGI-Modid: xfs-linux-melb:xfs-kern:25482a
Signed-off-by: Nathan Scott <nathans@sgi.com>

prep for nobh, someday, maybe).

SGI-PV: 904196
SGI-Modid: xfs-linux-melb:xfs-kern:25481a
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 904196
SGI-Modid: xfs-linux-melb:xfs-kern:25480a
Signed-off-by: Nathan Scott <nathans@sgi.com>

detected.  Thanks to Roger Willcocks.

SGI-PV: 951054
SGI-Modid: xfs-linux-melb:xfs-kern:25477a
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 904196
SGI-Modid: xfs-linux-melb:xfs-kern:25476a
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 947038
SGI-Modid: xfs-linux-melb:xfs-kern:25474a
Signed-off-by: Nathan Scott <nathans@sgi.com>

xfs_bmap_search_multi_extents() wrapper function that I introduced in mod
xfs-linux:xfs-kern:207393a. The function was added as a wrapper around
xfs_bmap_do_search_extents() to avoid breaking the top-of-tree CXFS
interface.  The idea of the function was basically to extract the target
extent buffer (if muli- level extent allocation mode), then call
xfs_bmap_do_search_extents() with either a pointer to the first extent in
the target buffer or a pointer to the first extent in the file, depending
on which extent mode was being used.  However, in addition to locating the
target extent record for block bno, xfs_bmap_do_search_extents() also sets
four parameters needed by the caller: *lastx, *eofp, *gotp, *prevp. 
Passing only the target extent buffer to xfs_bmap_do_search_extents()
causes *eofp to be set incorrectly if the extent is at the end of the
target list but there are actually more extents in the next er_extbuf.
Likewise, if the extent is the first one in the buffer but NOT the first
in the file, *prevp is incorrectly set to NULL.  Adding the needed
functionality to xfs_bmap_search_multi_extents() to re-set any incorrectly
set fields is redundant and makes the call to xfs_bmap_do_search_extents()
not make much sense when multi-level extent allocation mode is being used.
 This mod basically extracts the two functional components from
xfs_bmap_do_search_extents(), with the intent of obsoleting/removing
xfs_bmap_do_search_extents() after the CXFS mult-level in-core extent
changes are checked in.  The two components are:  1) The binary search to
locate the target extent record, and 2) Setting the four parameters needed
by the caller (*lastx, *eofp, *gotp, *prevp).  Component 1: I created a
new function in xfs_inode.c called xfs_iext_bno_to_ext(), which executes
the binary search to find the target extent record.
xfs_bmap_search_multi_extents() has been modified to call
xfs_iext_bno_to_ext() rather than xfs_bmap_do_search_extents().  Component
2: The parameter setting functionality has been added to
xfs_bmap_search_multi_extents(), eliminating the need for
xfs_bmap_do_search_extents().  These changes make the removal of
xfs_bmap_do_search_extents() trival once the CXFS changes are in place. 
They also allow us to maintain the current XFS interface, using the new
search function introduced in mod xfs-linux:xfs-kern:207393a.

SGI-PV: 928864
SGI-Modid: xfs-linux-melb:xfs-kern:207866a
Signed-off-by: Mandy Kirkconnell <alkirkco@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>

help here and vattr may be small enough.

SGI-PV: 947312
SGI-Modid: xfs-linux-melb:xfs-kern:25423a
Signed-off-by: Nathan Scott <nathans@sgi.com>

stack footprint in xfs_ialloc_ag_alloc.

SGI-PV: 947312
SGI-Modid: xfs-linux-melb:xfs-kern:25420a
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 950678
SGI-Modid: xfs-linux-melb:xfs-kern:207634a
Signed-off-by: Mandy Kirkconnell <alkirkco@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>

consistent naming.

SGI-PV: 950556
SGI-Modid: xfs-linux-melb:xfs-kern:25382a
Signed-off-by: Nathan Scott <nathans@sgi.com>

naming.

SGI-PV: 950556
SGI-Modid: xfs-linux-melb:xfs-kern:25381a
Signed-off-by: Nathan Scott <nathans@sgi.com>

naming.

SGI-PV: 950556
SGI-Modid: xfs-linux-melb:xfs-kern:25379a
Signed-off-by: Nathan Scott <nathans@sgi.com>

naming.

SGI-PV: 950556
SGI-Modid: xfs-linux-melb:xfs-kern:25378a
Signed-off-by: Nathan Scott <nathans@sgi.com>

SGI-PV: 950556
SGI-Modid: xfs-linux-melb:xfs-kern:25377a
Signed-off-by: Nathan Scott <nathans@sgi.com>

splitting realtime/btree allocators apart.  Based on Glens original
patches.

SGI-PV: 947312
SGI-Modid: xfs-linux-melb:xfs-kern:25372a
Signed-off-by: Nathan Scott <nathans@sgi.com>