Speeds up reading from a RAM disk via ib_srpt by about 30%.
Tested with iSCSI-SCST, ib_srpt and scst_local.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
In it:
- Fixed NULLIO, which the original patch breaks
- Changed on all fast paths sBUG_ON() on EXTRACHECKS_BUG_ON()
- Fixed errors path in non_fileio_exec() and fileio_alloc_data_buf().
- Renamed zero_copy_read to just zero_copy.
- Docs and change log updated
- Some cleanups
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@4213 d57e44dd-8a1f-0410-8b47-8ef2f437770f
- Docs updated
- Returning of DIRECT contexts by scst_estimate_context() disabled (see comment in the patch why)
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@3203 d57e44dd-8a1f-0410-8b47-8ef2f437770f
- Zero-copy feature, introduced by put_page_callback patch, made kernel compile time configurable via CONFIG_TCP_ZERO_COPY_TRANSFER_COMPLETION_NOTIFICATION option. If you upgrade from earlier versions, see the corresponding "[CAUTION]" e-mail in scst-devel mailing list about possible compatibility problems.
- SRP target temporary removed from "all" and "install" the main Makefile targets, since it isn't compiled on 2.6.26
- Minor fixes and cleanups
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@475 d57e44dd-8a1f-0410-8b47-8ef2f437770f
