[arvados] updated: 2.7.0-6271-g593917ad86

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Summary of changes:
 sdk/python/arvados/diskcache.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

       via  593917ad86ce138fd4735628a3437a920130b691 (commit)
      from  10564bc0d78545b71a5815c3332403f2e8a0d562 (commit)

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commit 593917ad86ce138fd4735628a3437a920130b691
Author: Peter Amstutz <peter.amstutz at curii.com>
Date:   Tue Apr 2 11:23:20 2024 -0400

    21639: Make sure it is a mmap object before calling madvise
    
    Arvados-DCO-1.1-Signed-off-by: Peter Amstutz <peter.amstutz at curii.com>

diff --git a/sdk/python/arvados/diskcache.py b/sdk/python/arvados/diskcache.py
index 2d85c11266..1e885c15e2 100644
--- a/sdk/python/arvados/diskcache.py
+++ b/sdk/python/arvados/diskcache.py
@@ -32,7 +32,7 @@ class DiskCacheSlot(object):
 
     def get(self):
         self.ready.wait()
-        if self.content is not None and len(self.content) > 0:
+        if isinstance(self.content, mmap.mmap):
             self.content.madvise(mmap.MADV_WILLNEED)
         return self.content
 

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