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-rw-r--r--xlators/storage/posix/src/posix.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c
index 92971551c83..cee4539d2e2 100644
--- a/xlators/storage/posix/src/posix.c
+++ b/xlators/storage/posix/src/posix.c
@@ -821,6 +821,7 @@ posix_do_zerofill (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
{
int32_t ret = -1;
int32_t op_errno = 0;
+ int32_t flags = 0;
struct posix_fd *pfd = NULL;
gf_boolean_t locked = _gf_false;
@@ -851,6 +852,14 @@ posix_do_zerofill (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
goto out;
}
+ /* See if we can use FALLOC_FL_ZERO_RANGE to perform the zero fill.
+ * If it fails, fall back to _posix_do_zerofill() and an optional fsync.
+ */
+ flags = FALLOC_FL_ZERO_RANGE;
+ ret = sys_fallocate (pfd->fd, flags, offset, len);
+ if (ret == 0)
+ goto done;
+
ret = _posix_do_zerofill (pfd->fd, offset, len, pfd->flags & O_DIRECT);
if (ret < 0) {
ret = -errno;
@@ -871,6 +880,7 @@ posix_do_zerofill (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
}
}
+done:
ret = posix_fdstat (this, pfd->fd, statpost);
if (ret == -1) {
ret = -errno;