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-rw-r--r--arch/um/os-Linux/file.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index c0197097c86e..f25b110d4e70 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -610,3 +610,13 @@ unsigned long long os_makedev(unsigned major, unsigned minor)
{
return makedev(major, minor);
}
+
+int os_falloc_punch(int fd, unsigned long long offset, int len)
+{
+ int n = fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, len);
+
+ if (n < 0)
+ return -errno;
+ return n;
+}
+