Lustre devel - Feb 2007 - [Bug 11647] patchless client for 2.6.20

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Created an attachment (id=9505)
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fixes for work lustre with 2.6.20

changes in kernel api
1) INIT_WORK need only 2 arguments
2) SLAB_ defines removed from kernel
3) truncate_compleate_page need cancel_dirty_page instead of clear_dirty_page.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #9505|review?(adilger@clusterfs.co|review+
               Flag|m)                          |


(From update of attachment 9505)
>+LB_LINUX_TRY_COMPILE([
>+        #include <linux/slab.h>
>+],[
>+	#ifndef SLAB_KERNEL
>+	#error SLAB_KERNEL do not defined
>+        #endif
>+],[
Please fix indenting.
>+],[
>+        struct writeback_control wb;
>+
>+	wb.range_start = 0;
>+],[
Indenting.
>+LB_LINUX_TRY_COMPILE([
>+	#include <linux/page-flags.h>
>+],[
>+	cancel_dirty_page(NULL, 0);
>+],[
>+        AC_MSG_RESULT(yes)
Indenting
>+# 2.6.20
>+LC_SLAB_KERNEL
>+LC_SLAB_NOFS
>+LC_WB_RANGE_START
>+LC_CANCEL_DIRTY_PAGE
Ah, good.  It is very useful to know what kernel version each configure check
applies to, so we can eventually remove some of them.
>diff -u -p -r1.1.6.3 lustre_patchless_compat.h
>--- lustre/include/linux/lustre_patchless_compat.h	11 Dec 2006 11:18:15
-0000	1.1.6.3
>+++ lustre/include/linux/lustre_patchless_compat.h	5 Feb 2007 13:43:38 -0000
>@@ -46,7 +46,11 @@ truncate_complete_page(struct address_sp
>         if (PagePrivate(page))
>                 page->mapping->a_ops->invalidatepage(page, 0);
> 
>-        clear_page_dirty(page);
>+#ifdef HAVE_CANCEL_DIRTY_PAGE
>+        cancel_dirty_page(page, PAGE_SIZE);
>+#else
>+	clear_page_dirty(page);
>+#endif
Indenting, and this could also be a compat macro in lustre_compat25.h.	Make
the code look like the 2.6.20 function (cancel_dirty_page()) and eventually the
old code will go away.

Unfortunately, I don''t think this can land on b1_4 for a while, if at
all.
Instead email pmg@ and ask for a target date to land on b1_5.

Please don''t reply to lustre-devel. Instead, comment in Bugzilla by
using the following link:
https://bugzilla.lustre.org/show_bug.cgi?id=11647

           What    |Removed                     |Added
----------------------------------------------------------------------------
Attachment #9505 is|0                           |1
           obsolete|                            |


Created an attachment (id=9548)
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using the following link:
 --> (https://bugzilla.lustre.org/attachment.cgi?id=9548&action=view)
fix minor errors add support for RHEL5 kernel.

fix indenting, add RHEL5 beta2 (and fc6 with 2.6.18 kernel) support.