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authorLibravatar Junio C Hamano <gitster@pobox.com>2015-07-13 14:00:26 -0700
committerLibravatar Junio C Hamano <gitster@pobox.com>2015-07-13 14:00:26 -0700
commit43f23b09bffed2ab8852725e26f746d1f762cc85 (patch)
tree0de5057d26f8c47b326869f698856a4ac42adeeb /Makefile
parentMerge branch 'js/rebase-i-clean-up-upon-continue-to-skip' (diff)
parentMakefile / racy-git.txt: clarify USE_NSEC prerequisites (diff)
downloadtgif-43f23b09bffed2ab8852725e26f746d1f762cc85.tar.xz
Merge branch 'kb/use-nsec-doc'
Clarify in the Makefile a guideline to decide use of USE_NSEC. * kb/use-nsec-doc: Makefile / racy-git.txt: clarify USE_NSEC prerequisites
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile9
1 files changed, 5 insertions, 4 deletions
diff --git a/Makefile b/Makefile
index 149f1c7c37..895f002869 100644
--- a/Makefile
+++ b/Makefile
@@ -217,10 +217,11 @@ all::
# as the compiler can crash (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49299)
#
# Define USE_NSEC below if you want git to care about sub-second file mtimes
-# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
-# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
-# randomly break unless your underlying filesystem supports those sub-second
-# times (my ext3 doesn't).
+# and ctimes. Note that you need recent glibc (at least 2.2.4) for this. On
+# Linux, kernel 2.6.11 or newer is required for reliable sub-second file times
+# on file systems with exactly 1 ns or 1 s resolution. If you intend to use Git
+# on other file systems (e.g. CEPH, CIFS, NTFS, UDF), don't enable USE_NSEC. See
+# Documentation/technical/racy-git.txt for details.
#
# Define USE_ST_TIMESPEC if your "struct stat" uses "st_ctimespec" instead of
# "st_ctim"