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* [PATCH 0/1] sha1-file: split OBJECT_INFO_FOR_PREFETCH
@ 2019-05-28 15:19 Derrick Stolee via GitGitGadget
  2019-05-28 15:19 ` [PATCH 1/1] " Derrick Stolee via GitGitGadget
  0 siblings, 1 reply; 5+ messages in thread
From: Derrick Stolee via GitGitGadget @ 2019-05-28 15:19 UTC (permalink / raw)
  To: git; +Cc: jonathantanmy, Junio C Hamano

I found this interaction while testing the VFS for Git fork rebasing onto
v2.22.0-rc1 [1]. It seems this new flag meant for partial clone prefetches
interacts poorly with the read-object hook we use in our fork.

The issue is that OBJECT_INFO_FOR_PREFETCH has multiple bits on, so testing
"flag & OBJECT_INFO_FOR_PREFETCH" can be true even if not all bits are on.
My fix simply splits the new bit into a special flag while keeping
OBJECT_INFO_FOR_PREFETCH as a union of flags.

Jury is out if this fixes our problem, but it definitely seems like a bug
waiting to happen in Git, too.

Thanks, -Stolee


Derrick Stolee (1):
  sha1-file: split OBJECT_INFO_FOR_PREFETCH

 object-store.h | 10 +++++++---
 sha1-file.c    |  2 +-
 2 files changed, 8 insertions(+), 4 deletions(-)

base-commit: 0f4a4fb1c4239a2aa46343add84ad6f99f6f3aae
Fetch-It-Via: git fetch pr-228/derrickstolee/object-info-prefetch-v1

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2019-05-29  0:29 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-05-28 15:19 [PATCH 0/1] sha1-file: split OBJECT_INFO_FOR_PREFETCH Derrick Stolee via GitGitGadget
2019-05-28 15:19 ` [PATCH 1/1] " Derrick Stolee via GitGitGadget
2019-05-28 20:31   ` Junio C Hamano
2019-05-28 20:54   ` Jeff King
2019-05-29  0:29     ` Derrick Stolee

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