[Bug 216007] XFS hangs in iowait when extracting large number of files

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216007

--- Comment #11 from Peter Pavlisko (bugzkernelorg8392@araxon.sk) ---
I bisected the issue again, double checking every step, and I arrived at
another commit. This looks more promising:

c9fa563072e13337713a441cf30171feb4e96e6d is the first bad commit
commit c9fa563072e13337713a441cf30171feb4e96e6d
Author: Dave Chinner <dchinner@redhat.com>
Date:   Tue Jun 1 13:40:36 2021 +1000

    xfs: use alloc_pages_bulk_array() for buffers

    Because it's more efficient than allocating pages one at a time in a
    loop.

    Signed-off-by: Dave Chinner <dchinner@redhat.com>
    Reviewed-by: Darrick J. Wong <djwong@kernel.org>

 fs/xfs/xfs_buf.c | 62 ++++++++++++++++++++++----------------------------------
 1 file changed, 24 insertions(+), 38 deletions(-)

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