In cases where we can't (or haven't gotten around to) attempting
graceful handling of mmap failures, Linux users may benefit from
additional information on how to avoid the problem.
Signed-off-by: Eric Wong <e@xxxxxxxxx>
---
object-file.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/object-file.c b/object-file.c
index 4c043f1f3c..4139a5ebe6 100644
--- a/object-file.c
+++ b/object-file.c
@@ -1027,8 +1027,14 @@ void *xmmap(void *start, size_t length,
int prot, int flags, int fd, off_t offset)
{
void *ret = xmmap_gently(start, length, prot, flags, fd, offset);
- if (ret == MAP_FAILED)
+ if (ret == MAP_FAILED) {
+#if defined(__linux__)
+ if (errno == ENOMEM)
+ die_errno(_(
+"mmap failed, check sys.vm.max_map_count and/or RLIMIT_DATA"));
+#endif /* OS-specific bits */
die_errno(_("mmap failed"));
+ }
return ret;
}
