Remove sizing of logbuf size & count based on physical memory; this was
never a very good gauge as it's looking at global memory, but deciding on
sizing per-filesystem; no account is made of the total number of
filesystems, for example.

For now just take the largest "default" case, as was set for machines with
>400MB - 8 x 32k buffers. This can always be tuned higher or lower with
mount options if necessary. Removes one more user of xfs_physmem.

SGI-PV: 968563
SGI-Modid: xfs-linux-melb:xfs-kern:29323a
Signed-off-by: NEric Sandeen <sandeen@sandeen.net>
Signed-off-by: NDavid Chinner <dgc@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>

space for the unmount record - which becomes a problem in the freeze/thaw
scenario.

SGI-PV: 942533
SGI-Modid: xfs-linux-melb:xfs-kern:26815a
Signed-off-by: NTim Shimmin <tes@sgi.com>

SGI-PV: 955302
SGI-Modid: xfs-linux-melb:xfs-kern:26749a
Signed-off-by: NEric Sandeen <sandeen@sandeen.net>
Signed-off-by: NNathan Scott <nathans@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>

get more useful error info on space for trans items

SGI-PV: 947110
SGI-Modid: xfs-linux-melb:xfs-kern:24886a
Signed-off-by: NTim Shimmin <tes@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 946205
SGI-Modid: xfs-linux-melb:xfs-kern:203360a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 946611
SGI-Modid: xfs-linux-melb:xfs-kern:203307a
Signed-off-by: NEric Sandeen <sandeen@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 946205
SGI-Modid: xfs-linux-melb:xfs-kern:24567a
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 944821
SGI-Modid: xfs-linux:xfs-kern:24213a
Signed-off-by: NNathan Scott <nathans@sgi.com>

boilerplate.

SGI-PV: 913862
SGI-Modid: xfs-linux:xfs-kern:23903a
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 943122
SGI-Modid: xfs-linux:xfs-kern:23901a
Signed-off-by: NNathan Scott <nathans@sgi.com>

Christoph).

SGI-PV: 942400
SGI-Modid: xfs-linux-melb:xfs-kern:23771a
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 931456
SGI-Modid: xfs-linux:xfs-kern:23155a
Signed-off-by: NTim Shimmin <tes@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 936255
SGI-Modid: xfs-linux:xfs-kern:192760a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!