xfs_io: add RWF_DSYNC support to pwrite

Enable testing write behaviour with the per-io RWF_DSYNC flag.

Signed-Off-By: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/io/pwrite.c b/io/pwrite.c
index afbe4284418fa60972ddc21314905e8261494c2e..d06af4b3c1776094548c94d713075c5a29222601 100644 (file)
--- a/io/pwrite.c
+++ b/io/pwrite.c
@@ -56,6 +56,7 @@ pwrite_help(void)
 #endif
 #ifdef HAVE_PWRITEV2
 " -N   -- Perform the pwritev2() with RWF_NOWAIT\n"
+" -D   -- Perform the pwritev2() with RWF_DSYNC\n"
 #endif
 "\n"));
 }
@@ -301,7 +302,7 @@ pwrite_f(
        init_cvtnum(&fsblocksize, &fssectsize);
        bsize = fsblocksize;
 
-       while ((c = getopt(argc, argv, "b:BCdf:Fi:NqRs:OS:uV:wWZ:")) != EOF) {
+       while ((c = getopt(argc, argv, "b:BCdDf:Fi:NqRs:OS:uV:wWZ:")) != EOF) {
                switch (c) {
                case 'b':
                        tmp = cvtnum(fsblocksize, fssectsize, optarg);
@@ -337,6 +338,9 @@ pwrite_f(
                case 'N':
                        pwritev2_flags |= RWF_NOWAIT;
                        break;
+               case 'D':
+                       pwritev2_flags |= RWF_DSYNC;
+                       break;
 #endif
                case 's':
                        skip = cvtnum(fsblocksize, fssectsize, optarg);
@@ -471,7 +475,7 @@ pwrite_init(void)
        pwrite_cmd.argmax = -1;
        pwrite_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
        pwrite_cmd.args =
-_("[-i infile [-dwNOW] [-s skip]] [-b bs] [-S seed] [-FBR [-Z N]] [-V N] off len");
+_("[-i infile [-dDwNOW] [-s skip]] [-b bs] [-S seed] [-FBR [-Z N]] [-V N] off len");
        pwrite_cmd.oneline =
                _("writes a number of bytes at a specified offset");
        pwrite_cmd.help = pwrite_help;

diff --git a/man/man8/xfs_io.8 b/man/man8/xfs_io.8
index 364088c82cc6115ee7163b8e1ade901725f8522b..c3ab532da03f7d3cb90d3db058fe1977b0d01c32 100644 (file)
--- a/man/man8/xfs_io.8
+++ b/man/man8/xfs_io.8
@@ -222,7 +222,7 @@ See the
 .B pread
 command.
 .TP
-.BI "pwrite [ \-i " file " ] [ \-dwNOW ] [ \-s " skip " ] [ \-b " size " ] [ \-S " seed " ] [ \-FBR [ \-Z " zeed " ] ] [ \-V " vectors " ] " "offset length"
+.BI "pwrite [ \-i " file " ] [ \-dDwNOW ] [ \-s " skip " ] [ \-b " size " ] [ \-S " seed " ] [ \-FBR [ \-Z " zeed " ] ] [ \-V " vectors " ] " "offset length"
 Writes a range of bytes in a specified blocksize from the given
 .IR offset .
 The bytes written can be either a set pattern or read in from another
@@ -248,7 +248,13 @@ once all writes are complete (included in timing results)
 Perform the
 .BR pwritev2 (2)
 call with
-.I RWF_NOWAIT.
+.IR RWF_NOWAIT .
+.TP
+.B \-D
+Perform the
+.BR pwritev2 (2)
+call with
+.IR RWF_DSYNC .
 .TP
 .B \-O
 perform pwrite once and return the (maybe partial) bytes written.