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[PATCH 1/3] SQUASH? Mention that `snapshot::buf` can be NULL for empty files

From
Michael Haggerty <mhagger@alum.mit.edu>
Date
Jan 15, 2018, 12:17 UTC
Message-ID
<131281e13bd6c25246e0e0ab263fc9a2f364d6e0.1516017331.git.mhagger@alum.mit.edu>
In-Reply-To
<20180114191416.2368-1-kgybels@infogroep.be>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 refs/packed-backend.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/refs/packed-backend.c b/refs/packed-backend.c
index 01a13cb817..f20f05b4df 100644
--- a/refs/packed-backend.c
+++ b/refs/packed-backend.c
@@ -69,11 +69,11 @@ struct snapshot {
 
 	/*
 	 * The contents of the `packed-refs` file. If the file was
-	 * already sorted, this points at the mmapped contents of the
-	 * file. If not, this points at heap-allocated memory
-	 * containing the contents, sorted. If there were no contents
-	 * (e.g., because the file didn't exist), `buf` and `eof` are
-	 * both NULL.
+	 * already sorted and if mmapping is allowed, this points at
+	 * the mmapped contents of the file. If not, this points at
+	 * heap-allocated memory containing the contents, sorted. If
+	 * there were no contents (e.g., because the file didn't exist
+	 * or was empty), `buf` and `eof` are both NULL.
 	 */
 	char *buf, *eof;
 
-- 
2.14.2
Previous: Junio C HamanoNext: Michael Haggerty
Message 7 of 33 in “packed_ref_cache: don't use mmap() for small files”
  1. packed_ref_cache: don't use mmap() for small filesKim Gybels, Jan 13, 2018
  2. Johannes SchindelinJan 13, 2018
  3. packed_ref_cache: don't use mmap() for small filesKim Gybels, Jan 14, 2018
  4. 0/3 Supplements to "packed_ref_cache: don't use mmap() for small files"Michael Haggerty, Jan 15, 2018
  5. Johannes SchindelinJan 17, 2018
  6. Junio C HamanoJan 17, 2018
  7. 1/3 SQUASH? Mention that `snapshot::buf` can be NULL for empty filesMichael Haggerty, Jan 15, 2018
  8. 2/3 create_snapshot(): exit early if the file was emptyMichael Haggerty, Jan 15, 2018
  9. 3/3 find_reference_location(): don't invoke if `snapshot->buf` is NULLMichael Haggerty, Jan 15, 2018
  10. Jeff KingJan 15, 2018
  11. Kim GybelsJan 15, 2018
  12. Jeff KingJan 15, 2018
  13. packed_ref_cache: don't use mmap() for small filesKim Gybels, Jan 16, 2018
  14. Jeff KingJan 17, 2018
  15. Michael HaggertyJan 21, 2018
  16. Junio C HamanoJan 22, 2018
  17. Michael HaggertyJan 24, 2018
  18. 0/6 Yet another approach to handling empty snapshotsMichael Haggerty, Jan 24, 2018
  19. Jeff KingJan 24, 2018
  20. Junio C HamanoJan 24, 2018
  21. Johannes SchindelinFeb 15, 2018
  22. 1/6 struct snapshot: store `start` rather than `header_len`Michael Haggerty, Jan 24, 2018
  23. Jeff KingJan 24, 2018
  24. 3/6 find_reference_location(): make function safe for empty snapshotsMichael Haggerty, Jan 24, 2018
  25. Jeff KingJan 24, 2018
  26. Junio C HamanoJan 24, 2018
  27. Jeff KingJan 24, 2018
  28. 2/6 create_snapshot(): use `xmemdupz()` rather than a strbufMichael Haggerty, Jan 24, 2018
  29. 5/6 load_contents(): don't try to mmap an empty fileMichael Haggerty, Jan 24, 2018
  30. 4/6 packed_ref_iterator_begin(): make optimization more generalMichael Haggerty, Jan 24, 2018
  31. Jeff KingJan 24, 2018
  32. 6/6 packed_ref_cache: don't use mmap() for small filesMichael Haggerty, Jan 24, 2018
  33. Junio C HamanoJan 24, 2018

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