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From: "mcermak at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug runtime/29766] New: kernel.function("__set_page_dirty_buffers")
 not found in tapset/linux/vfs.stp
Date: Wed, 09 Nov 2022 14:00:34 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29766

            Bug ID: 29766
           Summary: kernel.function("__set_page_dirty_buffers") not found
                    in tapset/linux/vfs.stp
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
          Assignee: systemtap at sourceware dot org
          Reporter: mcermak at redhat dot com
  Target Milestone: ---

The new 5.14.0-186.kpq1.el9 seems to be missing
kernel.function("__set_page_dirty_buffers").  Suspectedly the following ker=
nel
commit is related:

commit e621900ad28b748e058b81d6078a5d5eb37b3973
Author: Matthew Wilcox (Oracle) <willy@infradead.org>
Date:   Wed Feb 9 20:22:12 2022 +0000

    fs: Convert __set_page_dirty_buffers to block_dirty_folio

    Convert all callers; mostly this is just changing the aops to point
    at it, but a few implementations need a little more work.

    Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
    Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
    Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
    Tested-by: Mike Marshall <hubcap@omnibond.com> # orangefs
    Tested-by: David Howells <dhowells@redhat.com> # afs


Reproducer:
# stap -P -w -p4 /root/systemtap/testsuite/buildok/vfs-all-probes.stp
semantic error: while resolving probe point: identifier 'kernel' at
/usr/local/share/systemtap/tapset/linux/vfs.stp:825:38
        source: probe vfs.__set_page_dirty_buffers =3D
kernel.function("__set_page_dirty_buffers")
                                                     ^

semantic error: no match (similar functions: __set_page_dirty_nobuffers,
write_dirty_buffer, __set_page_dirty, __sync_dirty_buffer, set_page_dirty_l=
ock)

Pass 2: analysis failed.  [man error::pass2]
Number of similar error messages suppressed: 1.
Rerun with -v to see them.
#

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