[PATCH] sha1_file.c: Round the mmap offset to half the window size.
From: Alexandre Julliard <hidden>
Date: 2016-06-15 22:42:54
Subsystem:
the rest · Maintainer:
Linus Torvalds
This ensures that a given area is mapped at most twice, and greatly reduces the virtual address space usage. Signed-off-by: Alexandre Julliard <redacted> --- sha1_file.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/sha1_file.c b/sha1_file.c
index 8ad7fad..a217c3c 100644
--- a/sha1_file.c
+++ b/sha1_file.c@@ -665,7 +665,7 @@ unsigned char* use_pack(struct packed_git *p, if (!page_size) page_size = getpagesize(); win = xcalloc(1, sizeof(*win)); - win->offset = (offset / page_size) * page_size; + win->offset = (offset / (packed_git_window_size/2)) * (packed_git_window_size/2); win->len = p->pack_size - win->offset; if (win->len > packed_git_window_size) win->len = packed_git_window_size;
--
1.5.0.7.g2fa71
--
Alexandre Julliard
julliard@winehq.org