X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/6d2010ae8f7a6078e10b361c6962983bab233e0f..4bd07ac2140668789aa3ee8ec4dde4a3e0a3bba5:/bsd/man/man2/fcntl.2?ds=sidebyside

diff --git a/bsd/man/man2/fcntl.2 b/bsd/man/man2/fcntl.2
index b53a38be1..ce2daefe5 100644
--- a/bsd/man/man2/fcntl.2
+++ b/bsd/man/man2/fcntl.2
@@ -184,7 +184,10 @@ turns data caching on.
 Get disk device information.
 Currently this only includes the
 disk device address that corresponds
-to the current file offset.
+to the current file offset. Note that if the
+file offset is not backed by physical blocks
+we can return -1 as the offset. This is subject
+to change.
 .It Dv F_LOG2PHYS_EXT
 Variant of F_LOG2PHYS that uses the passed in
 file offset and length.