(split) LDP: Update original to LDP v3.63

[linuxjm/LDP_man-pages.git] / original / man2 / fallocate.2

diff --git a/original/man2/fallocate.2 b/original/man2/fallocate.2
index f5c395d..b31bbde 100644 (file)
--- a/original/man2/fallocate.2
+++ b/original/man2/fallocate.2
@@ -8,7 +8,7 @@
 .\" 2011-09-19: Added FALLOC_FL_PUNCH_HOLE
 .\" 2011-09-19: Substantial restructuring of the page
 .\"
-.TH FALLOCATE 2 2013-06-10 "Linux" "Linux Programmer's Manual"
+.TH FALLOCATE 2 2014-01-24 "Linux" "Linux Programmer's Manual"
 .SH NAME
 fallocate \- manipulate file space
 .SH SYNOPSIS
@@ -44,8 +44,7 @@ The default operation (i.e.,
 .I mode
 is zero) of
 .BR fallocate ()
-allocates and initializes to zero the disk space
-within the range specified by
+allocates the disk space within the range specified by
 .I offset
 and
 .IR len .
@@ -54,6 +53,11 @@ The file size (as reported by
 will be changed if
 .IR offset + len
 is greater than the file size.
+Any subregion within the range specified by
+.I offset
+and
+.IR len
+that did not contain data before the call will be initialized to zero.
 This default behavior closely resembles the behavior of the
 .BR posix_fallocate (3)
 library function,
@@ -109,6 +113,17 @@ does not change.
 Not all filesystems support
 .BR FALLOC_FL_PUNCH_HOLE ;
 if a filesystem doesn't support the operation, an error is returned.
+The operation is supported on at least the following filesystems
+.IP * 3
+XFS (since Linux 2.6.38)
+.IP *
+ext4 (since Linux 3.0)
+.\" commit a4bb6b64e39abc0e41ca077725f2a72c868e7622
+.IP *
+Btrfs (since Linux 3.7)
+.IP *
+tmpfs (since Linux 3.5)
+.\" commit 83e4fa9c16e4af7122e31be3eca5d57881d236fe
 .SH RETURN VALUE
 On success,
 .BR fallocate ()