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| author | Benny Halevy <bhalevy@panasas.com> | 2011-05-22 18:47:26 +0200 |
|---|---|---|
| committer | Boaz Harrosh <bharrosh@panasas.com> | 2011-05-29 19:52:32 +0200 |
| commit | fb3296eb4636763918edef2d22e45b85b15d4518 (patch) | |
| tree | 31c85255ccfa03cbca2d1e4e52028e489276a73b /mm/vmscan.c | |
| parent | SUNRPC: introduce xdr_init_decode_pages (diff) | |
| download | linux-fb3296eb4636763918edef2d22e45b85b15d4518.tar.xz linux-fb3296eb4636763918edef2d22e45b85b15d4518.zip | |
pnfs: Use byte-range for layoutget
Add offset and count parameters to pnfs_update_layout and use them to get
the layout in the pageio path.
Order cache layout segments in the following order:
* offset (ascending)
* length (descending)
* iomode (RW before READ)
Test byte range against the layout segment in use in pnfs_{read,write}_pg_test
so not to coalesce pages not using the same layout segment.
[fix lseg ordering]
[clean up pnfs_find_lseg lseg arg]
[remove unnecessary FIXME]
[fix ordering in pnfs_insert_layout]
[clean up pnfs_insert_layout]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Diffstat (limited to 'mm/vmscan.c')
0 files changed, 0 insertions, 0 deletions