Boaz Harrosh fe0fe83585 pnfs-obj: Must return layout on IO error ... As mandated by the standard. In case of an IO error, a pNFS objects layout driver must return it's layout. This is because all device errors are reported to the server as part of the layout return buffer. This is implemented the same way PNFS_LAYOUTRET_ON_SETATTR is done, through a bit flag on the pnfs_layoutdriver_type->flags member. The flag is set by the layout driver that wants a layout_return preformed at pnfs_ld_{write,read}_done in case of an error. (Though I have not defined a wrapper like pnfs_ld_layoutret_on_setattr because this code is never called outside of pnfs.c and pnfs IO paths) Without this patch 3.[0-2] Kernels leak memory and have an annoying WARN_ON after every IO error utilizing the pnfs-obj driver. [This patch is for 3.2 Kernel. 3.1/0 Kernels need a different patch] CC: Stable Tree <stable@kernel.org> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>		2012-01-06 08:55:33 -05:00
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Kbuild	pnfs-obj: decode layout, alloc/free lseg	2011-05-29 20:53:06 +03:00
objio_osd.c	pnfs-obj: Must return layout on IO error	2012-01-06 08:55:33 -05:00
objlayout.c	pnfs-obj: pNFS errors are communicated on iodata->pnfs_error	2012-01-06 08:55:23 -05:00
objlayout.h	pnfs-obj: Rename objlayout_io_state => objlayout_io_res	2011-11-02 23:56:06 -04:00
pnfs_osd_xdr_cli.c	pnfs-obj: Fix the comp_index != 0 case	2011-08-04 11:54:48 -04:00