[PATCH xfstests 4/5] fstress: add fallocate write zeroes support

[Zhang Yi]

From: Zhang Yi <yi.zh...@huawei.com>

Add fstress to suppoet fallocate FALLOC_FL_WRITE_ZEROES command by
introducing OP_WZERO operation.

Signed-off-by: Zhang Yi <yi.zh...@huawei.com>
---
 ltp/fsstress.c | 12 ++++++++++++
 src/global.h   |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/ltp/fsstress.c b/ltp/fsstress.c
index 3d248ee2..ed2a54ab 100644
--- a/ltp/fsstress.c
+++ b/ltp/fsstress.c
@@ -114,6 +114,7 @@ typedef enum {
        OP_MWRITE,
        OP_PUNCH,
        OP_ZERO,
+       OP_WZERO,
        OP_COLLAPSE,
        OP_INSERT,
        OP_READ,
@@ -245,6 +246,7 @@ void        mread_f(opnum_t, long);
 void   mwrite_f(opnum_t, long);
 void   punch_f(opnum_t, long);
 void   zero_f(opnum_t, long);
+void   wzero_f(opnum_t, long);
 void   collapse_f(opnum_t, long);
 void   insert_f(opnum_t, long);
 void   unshare_f(opnum_t, long);
@@ -312,6 +314,7 @@ struct opdesc       ops[OP_LAST]    = {
        [OP_MWRITE]        = {"mwrite",        mwrite_f,        2, 1 },
        [OP_PUNCH]         = {"punch",         punch_f,         1, 1 },
        [OP_ZERO]          = {"zero",          zero_f,          1, 1 },
+       [OP_WZERO]         = {"wzero",         wzero_f,         1, 1 },
        [OP_COLLAPSE]      = {"collapse",      collapse_f,      1, 1 },
        [OP_INSERT]        = {"insert",        insert_f,        1, 1 },
        [OP_READ]          = {"read",          read_f,          1, 0 },
@@ -3758,6 +3761,7 @@ struct print_flags falloc_flags [] = {
        { FALLOC_FL_NO_HIDE_STALE, "NO_HIDE_STALE"},
        { FALLOC_FL_COLLAPSE_RANGE, "COLLAPSE_RANGE"},
        { FALLOC_FL_ZERO_RANGE, "ZERO_RANGE"},
+       { FALLOC_FL_WRITE_ZEROES, "WRITE_ZEROES"},
        { FALLOC_FL_INSERT_RANGE, "INSERT_RANGE"},
        { FALLOC_FL_UNSHARE_RANGE, "UNSHARE_RANGE"},
        { -1, NULL}
@@ -4446,6 +4450,14 @@ zero_f(opnum_t opno, long r)
 #endif
 }
 
+void
+wzero_f(opnum_t opno, long r)
+{
+#ifdef HAVE_LINUX_FALLOC_H
+       do_fallocate(opno, r, FALLOC_FL_WRITE_ZEROES);
+#endif
+}
+
 void
 collapse_f(opnum_t opno, long r)
 {
diff --git a/src/global.h b/src/global.h
index fbc0a0b5..6b1e30c9 100644
--- a/src/global.h
+++ b/src/global.h
@@ -175,6 +175,10 @@
 #define FALLOC_FL_ZERO_RANGE           0x10
 #endif
 
+#ifndef FALLOC_FL_WRITE_ZEROES
+#define FALLOC_FL_WRITE_ZEROES         0x80
+#endif
+
 #ifndef FALLOC_FL_INSERT_RANGE
 #define FALLOC_FL_INSERT_RANGE         0x20
 #endif
-- 
2.46.1