|
 |
ddf19c |
From f09f13f9a001a50ee3465c165f4bbaf870fcadb9 Mon Sep 17 00:00:00 2001
|
|
|
ddf19c |
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
|
|
|
ddf19c |
Date: Mon, 27 Jan 2020 19:00:53 +0100
|
|
|
ddf19c |
Subject: [PATCH 022/116] virtiofsd: Make fsync work even if only inode is
|
|
|
ddf19c |
passed in
|
|
|
ddf19c |
MIME-Version: 1.0
|
|
|
ddf19c |
Content-Type: text/plain; charset=UTF-8
|
|
|
ddf19c |
Content-Transfer-Encoding: 8bit
|
|
|
ddf19c |
|
|
|
ddf19c |
RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
|
|
|
ddf19c |
Message-id: <20200127190227.40942-19-dgilbert@redhat.com>
|
|
|
ddf19c |
Patchwork-id: 93472
|
|
|
ddf19c |
O-Subject: [RHEL-AV-8.2 qemu-kvm PATCH 018/112] virtiofsd: Make fsync work even if only inode is passed in
|
|
|
ddf19c |
Bugzilla: 1694164
|
|
|
ddf19c |
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
|
|
|
ddf19c |
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
|
|
|
ddf19c |
RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>
|
|
|
ddf19c |
|
|
|
ddf19c |
From: Vivek Goyal <vgoyal@redhat.com>
|
|
|
ddf19c |
|
|
|
ddf19c |
If caller has not sent file handle in request, then using inode, retrieve
|
|
|
ddf19c |
the fd opened using O_PATH and use that to open file again and issue
|
|
|
ddf19c |
fsync. This will be needed when dax_flush() calls fsync. At that time
|
|
|
ddf19c |
we only have inode information (and not file).
|
|
|
ddf19c |
|
|
|
ddf19c |
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
|
|
|
ddf19c |
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
|
|
|
ddf19c |
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
|
|
|
ddf19c |
(cherry picked from commit 1b209805f8159c3f4d89ddb9390a5f64887cebff)
|
|
|
ddf19c |
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
|
|
|
ddf19c |
---
|
|
|
ddf19c |
tools/virtiofsd/fuse_lowlevel.c | 6 +++++-
|
|
|
ddf19c |
tools/virtiofsd/passthrough_ll.c | 28 ++++++++++++++++++++++++++--
|
|
|
ddf19c |
2 files changed, 31 insertions(+), 3 deletions(-)
|
|
|
ddf19c |
|
|
|
ddf19c |
diff --git a/tools/virtiofsd/fuse_lowlevel.c b/tools/virtiofsd/fuse_lowlevel.c
|
|
|
ddf19c |
index 514d79c..8552cfb 100644
|
|
|
ddf19c |
--- a/tools/virtiofsd/fuse_lowlevel.c
|
|
|
ddf19c |
+++ b/tools/virtiofsd/fuse_lowlevel.c
|
|
|
ddf19c |
@@ -1075,7 +1075,11 @@ static void do_fsync(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
|
|
|
ddf19c |
fi.fh = arg->fh;
|
|
|
ddf19c |
|
|
|
ddf19c |
if (req->se->op.fsync) {
|
|
|
ddf19c |
- req->se->op.fsync(req, nodeid, datasync, &fi);
|
|
|
ddf19c |
+ if (fi.fh == (uint64_t)-1) {
|
|
|
ddf19c |
+ req->se->op.fsync(req, nodeid, datasync, NULL);
|
|
|
ddf19c |
+ } else {
|
|
|
ddf19c |
+ req->se->op.fsync(req, nodeid, datasync, &fi);
|
|
|
ddf19c |
+ }
|
|
|
ddf19c |
} else {
|
|
|
ddf19c |
fuse_reply_err(req, ENOSYS);
|
|
|
ddf19c |
}
|
|
|
ddf19c |
diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
|
|
|
ddf19c |
index 6c4da18..26ac870 100644
|
|
|
ddf19c |
--- a/tools/virtiofsd/passthrough_ll.c
|
|
|
ddf19c |
+++ b/tools/virtiofsd/passthrough_ll.c
|
|
|
ddf19c |
@@ -903,10 +903,34 @@ static void lo_fsync(fuse_req_t req, fuse_ino_t ino, int datasync,
|
|
|
ddf19c |
{
|
|
|
ddf19c |
int res;
|
|
|
ddf19c |
(void)ino;
|
|
|
ddf19c |
+ int fd;
|
|
|
ddf19c |
+ char *buf;
|
|
|
ddf19c |
+
|
|
|
ddf19c |
+ fuse_log(FUSE_LOG_DEBUG, "lo_fsync(ino=%" PRIu64 ", fi=0x%p)\n", ino,
|
|
|
ddf19c |
+ (void *)fi);
|
|
|
ddf19c |
+
|
|
|
ddf19c |
+ if (!fi) {
|
|
|
ddf19c |
+ res = asprintf(&buf, "/proc/self/fd/%i", lo_fd(req, ino));
|
|
|
ddf19c |
+ if (res == -1) {
|
|
|
ddf19c |
+ return (void)fuse_reply_err(req, errno);
|
|
|
ddf19c |
+ }
|
|
|
ddf19c |
+
|
|
|
ddf19c |
+ fd = open(buf, O_RDWR);
|
|
|
ddf19c |
+ free(buf);
|
|
|
ddf19c |
+ if (fd == -1) {
|
|
|
ddf19c |
+ return (void)fuse_reply_err(req, errno);
|
|
|
ddf19c |
+ }
|
|
|
ddf19c |
+ } else {
|
|
|
ddf19c |
+ fd = fi->fh;
|
|
|
ddf19c |
+ }
|
|
|
ddf19c |
+
|
|
|
ddf19c |
if (datasync) {
|
|
|
ddf19c |
- res = fdatasync(fi->fh);
|
|
|
ddf19c |
+ res = fdatasync(fd);
|
|
|
ddf19c |
} else {
|
|
|
ddf19c |
- res = fsync(fi->fh);
|
|
|
ddf19c |
+ res = fsync(fd);
|
|
|
ddf19c |
+ }
|
|
|
ddf19c |
+ if (!fi) {
|
|
|
ddf19c |
+ close(fd);
|
|
|
ddf19c |
}
|
|
|
ddf19c |
fuse_reply_err(req, res == -1 ? errno : 0);
|
|
|
ddf19c |
}
|
|
|
ddf19c |
--
|
|
|
ddf19c |
1.8.3.1
|
|
|
ddf19c |
|