gfapi: revert several patchs that introduced pre/post attrs

Reverted the following:
  - 248152767b0599986bbb6bb35fc27197f6be6964
  - 09943beb499617212f2985ca8ea9ecd1ed1b470e
  - d01f7244e9d9f7e3ef84e0ba7b48ef1b1b09d809

The reverts are redone by hand, due to clang format changes
that made using git to revert the changes more tedious.

Change-Id: I96489638a2b641fb2206a110298543225783f7be
Updates: bz#1628620
Signed-off-by: ShyamsundarR <srangana@redhat.com>

5 files changed, 42 insertions, 225 deletions

diff --git a/api/src/gfapi.aliases b/api/src/gfapi.aliases
index a2c6077b6e4..9e097835a71 100644
--- a/api/src/gfapi.aliases
+++ b/api/src/gfapi.aliases
@@ -24,8 +24,8 @@ _pub_glfs_readv _glfs_readv$GFAPI_3.4.0
 _pub_glfs_writev _glfs_writev$GFAPI_3.4.0
 _pub_glfs_readv_async _glfs_readv_async$GFAPI_3.4.0
 _pub_glfs_writev_async _glfs_writev_async$GFAPI_3.4.0
-_pub_glfs_pread34 _glfs_pread$GFAPI_3.4.0
-_pub_glfs_pwrite34 _glfs_pwrite$GFAPI_3.4.0
+_pub_glfs_pread _glfs_pread$GFAPI_3.4.0
+_pub_glfs_pwrite _glfs_pwrite$GFAPI_3.4.0
 _pub_glfs_pread_async _glfs_pread_async$GFAPI_3.4.0
 _pub_glfs_pwrite_async _glfs_pwrite_async$GFAPI_3.4.0
 _pub_glfs_preadv _glfs_preadv$GFAPI_3.4.0
@@ -33,14 +33,14 @@ _pub_glfs_pwritev _glfs_pwritev$GFAPI_3.4.0
 _pub_glfs_preadv_async _glfs_preadv_async$GFAPI_3.4.0
 _pub_glfs_pwritev_async _glfs_pwritev_async$GFAPI_3.4.0
 _pub_glfs_lseek _glfs_lseek$GFAPI_3.4.0
-_pub_glfs_ftruncate34 _glfs_ftruncate$GFAPI_3.4.0
+_pub_glfs_ftruncate _glfs_ftruncate$GFAPI_3.4.0
 _pub_glfs_ftruncate_async _glfs_ftruncate_async$GFAPI_3.4.0
 _pub_glfs_lstat _glfs_lstat$GFAPI_3.4.0
 _pub_glfs_stat _glfs_stat$GFAPI_3.4.0
 _pub_glfs_fstat _glfs_fstat$GFAPI_3.4.0
-_pub_glfs_fsync34 _glfs_fsync$GFAPI_3.4.0
+_pub_glfs_fsync _glfs_fsync$GFAPI_3.4.0
 _pub_glfs_fsync_async _glfs_fsync_async$GFAPI_3.4.0
-_pub_glfs_fdatasync34 _glfs_fdatasync$GFAPI_3.4.0
+_pub_glfs_fdatasync _glfs_fdatasync$GFAPI_3.4.0
 _pub_glfs_fdatasync_async _glfs_fdatasync_async$GFAPI_3.4.0
 _pub_glfs_access _glfs_access$GFAPI_3.4.0
 _pub_glfs_symlink _glfs_symlink$GFAPI_3.4.0
@@ -178,8 +178,3 @@ _pub_glfs_h_lease _glfs_h_lease$GFAPI_4.0.0
 
 _pub_glfs_recall_lease_fd _glfs_recall_lease_fd$GFAPI_future
 _pub_glfs_recall_lease_upcall _glfs_recall_lease_upcall$GFAPI_future
-_pub_glfs_pread _glfs_pread$GFAPI_future
-_pub_glfs_pwrite _glfs_pwrite$GFAPI_future
-_pub_glfs_fsync _glfs_fsync$GFAPI_future
-_pub_glfs_fdatasync _glfs_fdatasync$GFAPI_future
-_pub_glfs_ftruncate _glfs_ftruncate$GFAPI_future
diff --git a/api/src/gfapi.map b/api/src/gfapi.map
index e1b37e6855a..8eeec71fb53 100644
--- a/api/src/gfapi.map
+++ b/api/src/gfapi.map
@@ -235,13 +235,3 @@ GFAPI_4.0.0 {
                 glfs_lease;
                 glfs_h_lease;
 } GFAPI_3.13.0;
-
-GFAPI_future {
-	global:
-                glfs_pread;
-                glfs_pwrite;
-                glfs_fsync;
-                glfs_fdatasync;
-                glfs_ftruncate;
-} GFAPI_4.0.0;
-
diff --git a/api/src/glfs-fops.c b/api/src/glfs-fops.c
index ed46ab44bea..574e341f57d 100644
--- a/api/src/glfs-fops.c
+++ b/api/src/glfs-fops.c
@@ -758,9 +758,9 @@ invalid_fs:
 
 GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_lseek, 3.4.0);
 
-static ssize_t
-glfs_preadv_common(struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
-                   off_t offset, int flags, struct stat *poststat)
+ssize_t
+pub_glfs_preadv(struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
+                off_t offset, int flags)
 {
     xlator_t *subvol = NULL;
     ssize_t ret = -1;
@@ -769,9 +769,6 @@ glfs_preadv_common(struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
     int cnt = 0;
     struct iobref *iobref = NULL;
     fd_t *fd = NULL;
-    struct iatt iatt = {
-        0,
-    };
     dict_t *fop_attr = NULL;
 
     DECLARE_OLD_THIS;
@@ -799,13 +796,10 @@ glfs_preadv_common(struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
     if (ret)
         gf_msg_debug("gfapi", 0, "Getting leaseid from thread failed");
 
-    ret = syncop_readv(subvol, fd, size, offset, 0, &iov, &cnt, &iobref, &iatt,
+    ret = syncop_readv(subvol, fd, size, offset, 0, &iov, &cnt, &iobref,
                        fop_attr, NULL);
     DECODE_SYNCOP_ERR(ret);
 
-    if (ret >= 0 && poststat)
-        glfs_iatt_to_stat(glfd->fs, &iatt, poststat);
-
     if (ret <= 0)
         goto out;
 
@@ -835,13 +829,6 @@ invalid_fs:
     return ret;
 }
 
-ssize_t
-pub_glfs_preadv(struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
-                off_t offset, int flags)
-{
-    return glfs_preadv_common(glfd, iovec, iovcnt, offset, flags, NULL);
-}
-
 GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_preadv, 3.4.0);
 
 ssize_t
@@ -863,27 +850,8 @@ pub_glfs_read(struct glfs_fd *glfd, void *buf, size_t count, int flags)
 GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_read, 3.4.0);
 
 ssize_t
-pub_glfs_pread34(struct glfs_fd *glfd, void *buf, size_t count, off_t offset,
-                 int flags)
-{
-    struct iovec iov = {
-        0,
-    };
-    ssize_t ret = 0;
-
-    iov.iov_base = buf;
-    iov.iov_len = count;
-
-    ret = pub_glfs_preadv(glfd, &iov, 1, offset, flags);
-
-    return ret;
-}
-
-GFAPI_SYMVER_PUBLIC(glfs_pread34, glfs_pread, 3.4.0);
-
-ssize_t
 pub_glfs_pread(struct glfs_fd *glfd, void *buf, size_t count, off_t offset,
-               int flags, struct stat *poststat)
+               int flags)
 {
     struct iovec iov = {
         0,
@@ -893,12 +861,12 @@ pub_glfs_pread(struct glfs_fd *glfd, void *buf, size_t count, off_t offset,
     iov.iov_base = buf;
     iov.iov_len = count;
 
-    ret = glfs_preadv_common(glfd, &iov, 1, offset, flags, poststat);
+    ret = pub_glfs_preadv(glfd, &iov, 1, offset, flags);
 
     return ret;
 }
 
-GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_pread, future);
+GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_pread, 3.4.0);
 
 ssize_t
 pub_glfs_readv(struct glfs_fd *glfd, const struct iovec *iov, int count,
@@ -1145,10 +1113,9 @@ pub_glfs_readv_async(struct glfs_fd *glfd, const struct iovec *iov, int count,
 
 GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_readv_async, 3.4.0);
 
-static ssize_t
-glfs_pwritev_common(struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
-                    off_t offset, int flags, struct stat *prestat,
-                    struct stat *poststat)
+ssize_t
+pub_glfs_pwritev(struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
+                 off_t offset, int flags)
 {
     xlator_t *subvol = NULL;
     int ret = -1;
@@ -1158,13 +1125,6 @@ glfs_pwritev_common(struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
         0,
     };
     fd_t *fd = NULL;
-    struct iatt preiatt =
-                    {
-                        0,
-                    },
-                postiatt = {
-                    0,
-                };
     dict_t *fop_attr = NULL;
 
     DECLARE_OLD_THIS;
@@ -1195,17 +1155,10 @@ glfs_pwritev_common(struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
     if (ret)
         gf_msg_debug("gfapi", 0, "Getting leaseid from thread failed");
 
-    ret = syncop_writev(subvol, fd, &iov, 1, offset, iobref, flags, &preiatt,
-                        &postiatt, fop_attr, NULL);
+    ret = syncop_writev(subvol, fd, &iov, 1, offset, iobref, flags, fop_attr,
+                        NULL);
     DECODE_SYNCOP_ERR(ret);
 
-    if (ret >= 0) {
-        if (prestat)
-            glfs_iatt_to_stat(glfd->fs, &preiatt, prestat);
-        if (poststat)
-            glfs_iatt_to_stat(glfd->fs, &postiatt, poststat);
-    }
-
     if (ret <= 0)
         goto out;
 
@@ -1230,13 +1183,6 @@ invalid_fs:
     return ret;
 }
 
-ssize_t
-pub_glfs_pwritev(struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
-                 off_t offset, int flags)
-{
-    return glfs_pwritev_common(glfd, iovec, iovcnt, offset, flags, NULL, NULL);
-}
-
 GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_pwritev, 3.4.0);
 
 ssize_t
@@ -1271,28 +1217,8 @@ pub_glfs_writev(struct glfs_fd *glfd, const struct iovec *iov, int count,
 GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_writev, 3.4.0);
 
 ssize_t
-pub_glfs_pwrite34(struct glfs_fd *glfd, const void *buf, size_t count,
-                  off_t offset, int flags)
-{
-    struct iovec iov = {
-        0,
-    };
-    ssize_t ret = 0;
-
-    iov.iov_base = (void *)buf;
-    iov.iov_len = count;
-
-    ret = pub_glfs_pwritev(glfd, &iov, 1, offset, flags);
-
-    return ret;
-}
-
-GFAPI_SYMVER_PUBLIC(glfs_pwrite34, glfs_pwrite, 3.4.0);
-
-ssize_t
 pub_glfs_pwrite(struct glfs_fd *glfd, const void *buf, size_t count,
-                off_t offset, int flags, struct stat *prestat,
-                struct stat *poststat)
+                off_t offset, int flags)
 {
     struct iovec iov = {
         0,
@@ -1302,12 +1228,12 @@ pub_glfs_pwrite(struct glfs_fd *glfd, const void *buf, size_t count,
     iov.iov_base = (void *)buf;
     iov.iov_len = count;
 
-    ret = glfs_pwritev_common(glfd, &iov, 1, offset, flags, prestat, poststat);
+    ret = pub_glfs_pwritev(glfd, &iov, 1, offset, flags);
 
     return ret;
 }
 
-GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_pwrite, future);
+GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_pwrite, 3.4.0);
 
 extern glfs_t *
 pub_glfs_from_glfd(glfs_fd_t *);
@@ -1478,20 +1404,12 @@ pub_glfs_writev_async(struct glfs_fd *glfd, const struct iovec *iov, int count,
 
 GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_writev_async, 3.4.0);
 
-static int
-glfs_fsync_common(struct glfs_fd *glfd, struct stat *prestat,
-                  struct stat *poststat)
+int
+pub_glfs_fsync(struct glfs_fd *glfd)
 {
     int ret = -1;
     xlator_t *subvol = NULL;
     fd_t *fd = NULL;
-    struct iatt preiatt =
-                    {
-                        0,
-                    },
-                postiatt = {
-                    0,
-                };
     dict_t *fop_attr = NULL;
 
     DECLARE_OLD_THIS;
@@ -1517,15 +1435,9 @@ glfs_fsync_common(struct glfs_fd *glfd, struct stat *prestat,
     if (ret)
         gf_msg_debug("gfapi", 0, "Getting leaseid from thread failed");
 
-    ret = syncop_fsync(subvol, fd, 0, &preiatt, &postiatt, fop_attr, NULL);
+    ret = syncop_fsync(subvol, fd, 0, fop_attr, NULL);
     DECODE_SYNCOP_ERR(ret);
 
-    if (ret >= 0) {
-        if (prestat)
-            glfs_iatt_to_stat(glfd->fs, &preiatt, prestat);
-        if (poststat)
-            glfs_iatt_to_stat(glfd->fs, &postiatt, poststat);
-    }
 out:
     if (fd)
         fd_unref(fd);
@@ -1542,22 +1454,7 @@ invalid_fs:
     return ret;
 }
 
-int
-pub_glfs_fsync34(struct glfs_fd *glfd)
-{
-    return glfs_fsync_common(glfd, NULL, NULL);
-}
-
-GFAPI_SYMVER_PUBLIC(glfs_fsync34, glfs_fsync, 3.4.0);
-
-int
-pub_glfs_fsync(struct glfs_fd *glfd, struct stat *prestat,
-               struct stat *poststat)
-{
-    return glfs_fsync_common(glfd, prestat, poststat);
-}
-
-GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_fsync, future);
+GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_fsync, 3.4.0);
 
 static int
 glfs_fsync_async_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
@@ -1655,20 +1552,12 @@ invalid_fs:
 
 GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_fsync_async, 3.4.0);
 
-static int
-glfs_fdatasync_common(struct glfs_fd *glfd, struct stat *prestat,
-                      struct stat *poststat)
+int
+pub_glfs_fdatasync(struct glfs_fd *glfd)
 {
     int ret = -1;
     xlator_t *subvol = NULL;
     fd_t *fd = NULL;
-    struct iatt preiatt =
-                    {
-                        0,
-                    },
-                postiatt = {
-                    0,
-                };
     dict_t *fop_attr = NULL;
 
     DECLARE_OLD_THIS;
@@ -1694,15 +1583,9 @@ glfs_fdatasync_common(struct glfs_fd *glfd, struct stat *prestat,
     if (ret)
         gf_msg_debug("gfapi", 0, "Getting leaseid from thread failed");
 
-    ret = syncop_fsync(subvol, fd, 1, &preiatt, &postiatt, fop_attr, NULL);
+    ret = syncop_fsync(subvol, fd, 1, fop_attr, NULL);
     DECODE_SYNCOP_ERR(ret);
 
-    if (ret >= 0) {
-        if (prestat)
-            glfs_iatt_to_stat(glfd->fs, &preiatt, prestat);
-        if (poststat)
-            glfs_iatt_to_stat(glfd->fs, &postiatt, poststat);
-    }
 out:
     if (fd)
         fd_unref(fd);
@@ -1719,22 +1602,7 @@ invalid_fs:
     return ret;
 }
 
-int
-pub_glfs_fdatasync34(struct glfs_fd *glfd)
-{
-    return glfs_fdatasync_common(glfd, NULL, NULL);
-}
-
-GFAPI_SYMVER_PUBLIC(glfs_fdatasync34, glfs_fdatasync, 3.4.0);
-
-int
-pub_glfs_fdatasync(struct glfs_fd *glfd, struct stat *prestat,
-                   struct stat *poststat)
-{
-    return glfs_fdatasync_common(glfd, prestat, poststat);
-}
-
-GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_fdatasync, future);
+GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_fdatasync, 3.4.0);
 
 int
 pub_glfs_fdatasync_async(struct glfs_fd *glfd, glfs_io_cbk fn, void *data)
@@ -1754,20 +1622,12 @@ invalid_fs:
 
 GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_fdatasync_async, 3.4.0);
 
-static int
-glfs_ftruncate_common(struct glfs_fd *glfd, off_t offset, struct stat *prestat,
-                      struct stat *poststat)
+int
+pub_glfs_ftruncate(struct glfs_fd *glfd, off_t offset)
 {
     int ret = -1;
     xlator_t *subvol = NULL;
     fd_t *fd = NULL;
-    struct iatt preiatt =
-                    {
-                        0,
-                    },
-                postiatt = {
-                    0,
-                };
     dict_t *fop_attr = NULL;
 
     DECLARE_OLD_THIS;
@@ -1793,16 +1653,9 @@ glfs_ftruncate_common(struct glfs_fd *glfd, off_t offset, struct stat *prestat,
     if (ret)
         gf_msg_debug("gfapi", 0, "Getting leaseid from thread failed");
 
-    ret = syncop_ftruncate(subvol, fd, offset, &preiatt, &postiatt, fop_attr,
-                           NULL);
+    ret = syncop_ftruncate(subvol, fd, offset, fop_attr, NULL);
     DECODE_SYNCOP_ERR(ret);
 
-    if (ret >= 0) {
-        if (prestat)
-            glfs_iatt_to_stat(glfd->fs, &preiatt, prestat);
-        if (poststat)
-            glfs_iatt_to_stat(glfd->fs, &postiatt, poststat);
-    }
 out:
     if (fd)
         fd_unref(fd);
@@ -1819,22 +1672,7 @@ invalid_fs:
     return ret;
 }
 
-int
-pub_glfs_ftruncate34(struct glfs_fd *glfd, off_t offset)
-{
-    return glfs_ftruncate_common(glfd, offset, NULL, NULL);
-}
-
-GFAPI_SYMVER_PUBLIC(glfs_ftruncate34, glfs_ftruncate, 3.4.0);
-
-int
-pub_glfs_ftruncate(struct glfs_fd *glfd, off_t offset, struct stat *prestat,
-                   struct stat *poststat)
-{
-    return glfs_ftruncate_common(glfd, offset, prestat, poststat);
-}
-
-GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_ftruncate, future);
+GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_ftruncate, 3.4.0);
 
 int
 pub_glfs_truncate(struct glfs *fs, const char *path, off_t length)
@@ -5237,8 +5075,7 @@ glfs_anonymous_pwritev(struct glfs *fs, struct glfs_object *object,
     iov.iov_len = size;
 
     /* TODO : set leaseid */
-    ret = syncop_writev(subvol, fd, &iov, 1, offset, iobref, flags, NULL, NULL,
-                        NULL, NULL);
+    ret = syncop_writev(subvol, fd, &iov, 1, offset, iobref, flags, NULL, NULL);
     DECODE_SYNCOP_ERR(ret);
 
     iobuf_unref(iobuf);
@@ -5308,7 +5145,7 @@ glfs_anonymous_preadv(struct glfs *fs, struct glfs_object *object,
 
     /* TODO : set leaseid */
     ret = syncop_readv(subvol, fd, size, offset, flags, &iov, &cnt, &iobref,
-                       NULL, NULL, NULL);
+                       NULL, NULL);
     DECODE_SYNCOP_ERR(ret);
     if (ret <= 0)
         goto out;
diff --git a/api/src/glfs-resolve.c b/api/src/glfs-resolve.c
index 34794b605e4..fc08311c59f 100644
--- a/api/src/glfs-resolve.c
+++ b/api/src/glfs-resolve.c
@@ -730,7 +730,7 @@ glfs_migrate_fd_safe(struct glfs *fs, xlator_t *newsubvol, fd_t *oldfd)
         return fd_ref(oldfd);
 
     if (!oldsubvol->switched) {
-        ret = syncop_fsync(oldsubvol, oldfd, 0, NULL, NULL, NULL, NULL);
+        ret = syncop_fsync(oldsubvol, oldfd, 0, NULL, NULL);
         DECODE_SYNCOP_ERR(ret);
         if (ret) {
             gf_msg(fs->volname, GF_LOG_WARNING, errno, API_MSG_FSYNC_FAILED,
diff --git a/api/src/glfs.h b/api/src/glfs.h
index 0673ca9505c..b54e050c9ed 100644
--- a/api/src/glfs.h
+++ b/api/src/glfs.h
@@ -551,13 +551,12 @@ glfs_writev_async(glfs_fd_t *fd, const struct iovec *iov, int count, int flags,
 // glfs_p{read,write}[_async]
 
 ssize_t
-glfs_pread(glfs_fd_t *fd, void *buf, size_t count, off_t offset, int flags,
-           struct stat *poststat) __THROW GFAPI_PUBLIC(glfs_pread, future);
+glfs_pread(glfs_fd_t *fd, void *buf, size_t count, off_t offset,
+           int flags) __THROW GFAPI_PUBLIC(glfs_pread, 3.4.0);
 
 ssize_t
 glfs_pwrite(glfs_fd_t *fd, const void *buf, size_t count, off_t offset,
-            int flags, struct stat *prestat, struct stat *poststat) __THROW
-    GFAPI_PUBLIC(glfs_pwrite, future);
+            int flags) __THROW GFAPI_PUBLIC(glfs_pwrite, 3.4.0);
 
 int
 glfs_pread_async(glfs_fd_t *fd, void *buf, size_t count, off_t offset,
@@ -598,9 +597,8 @@ glfs_truncate(glfs_t *fs, const char *path, off_t length) __THROW
     GFAPI_PUBLIC(glfs_truncate, 3.7.15);
 
 int
-glfs_ftruncate(glfs_fd_t *fd, off_t length, struct stat *prestat,
-               struct stat *poststat) __THROW
-    GFAPI_PUBLIC(glfs_ftruncate, future);
+glfs_ftruncate(glfs_fd_t *fd, off_t length) __THROW
+    GFAPI_PUBLIC(glfs_ftruncate, 3.4.0);
 
 int
 glfs_ftruncate_async(glfs_fd_t *fd, off_t length, glfs_io_cbk fn,
@@ -620,17 +618,14 @@ glfs_fstat(glfs_fd_t *fd, struct stat *buf) __THROW
     GFAPI_PUBLIC(glfs_fstat, 3.4.0);
 
 int
-glfs_fsync(glfs_fd_t *fd, struct stat *prestat, struct stat *poststat) __THROW
-    GFAPI_PUBLIC(glfs_fsync, future);
+glfs_fsync(glfs_fd_t *fd) __THROW GFAPI_PUBLIC(glfs_fsync, 3.4.0);
 
 int
 glfs_fsync_async(glfs_fd_t *fd, glfs_io_cbk fn, void *data) __THROW
     GFAPI_PUBLIC(glfs_fsync_async, 3.4.0);
 
 int
-glfs_fdatasync(glfs_fd_t *fd, struct stat *prestat,
-               struct stat *poststat) __THROW
-    GFAPI_PUBLIC(glfs_fdatasync, future);
+glfs_fdatasync(glfs_fd_t *fd) __THROW GFAPI_PUBLIC(glfs_fdatasync, 3.4.0);
 
 int
 glfs_fdatasync_async(glfs_fd_t *fd, glfs_io_cbk fn, void *data) __THROW