pnfsblock: bl_write_pagelist

Note: When upper layer's read/write request cannot be fulfilled, the block
layout driver shouldn't silently mark the page as error. It should do
what can be done and  leave the rest to the upper layer. To do so, we
should set rdata/wdata->res.count properly.

When upper layer re-send the read/write request to finish the rest
part of the request, pgbase is the position where we should start at.

[pnfsblock: bl_write_pagelist support functions]
[pnfsblock: bl_write_pagelist adjust for missing PG_USE_PNFS]
Signed-off-by: Fred Isaman <[email protected]>
[pnfsblock: handle errors when read or write pagelist.]
Signed-off-by: Zhang Jingwang <[email protected]>
[pnfs-block: use new write_pagelist api]
Signed-off-by: Benny Halevy <[email protected]>
Signed-off-by: Benny Halevy <[email protected]>
Signed-off-by: Jim Rees <[email protected]>

[SQUASHME: pnfsblock: mds_offset is set in the generic layer]
Signed-off-by: Boaz Harrosh <[email protected]>
Signed-off-by: Benny Halevy <[email protected]>

[pnfsblock: mark IO error with NFS_LAYOUT_{RW|RO}_FAILED]
Signed-off-by: Peng Tao <[email protected]>
[pnfsblock: SQUASHME: adjust to API change]
Signed-off-by: Fred Isaman <[email protected]>
[pnfsblock: fixup blksize alignment in bl_setup_layoutcommit]
Signed-off-by: Benny Halevy <[email protected]>
Signed-off-by: Benny Halevy <[email protected]>
[pnfsblock: bl_write_pagelist adjust for missing PG_USE_PNFS]
Signed-off-by: Fred Isaman <[email protected]>
[pnfsblock: handle errors when read or write pagelist.]
Signed-off-by: Zhang Jingwang <[email protected]>
[pnfs-block: use new write_pagelist api]
Signed-off-by: Benny Halevy <[email protected]>
Signed-off-by: Benny Halevy <[email protected]>
Signed-off-by: Jim Rees <[email protected]>
Signed-off-by: Trond Myklebust <[email protected]>

0 files changed, 0 insertions, 0 deletions