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Blame 0103-virtiofsd-do-not-always-set-FUSE_FLOCK_LOCKS.patch

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From: Peng Tao <tao.peng@linux.alibaba.com>
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Date: Mon, 27 Jan 2020 19:02:12 +0000
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Subject: [PATCH] virtiofsd: do not always set FUSE_FLOCK_LOCKS
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Right now we always enable it regardless of given commandlines.
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Fix it by setting the flag relying on the lo->flock bit.
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Signed-off-by: Peng Tao <tao.peng@linux.alibaba.com>
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Reviewed-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
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Reviewed-by: Sergio Lopez <slp@redhat.com>
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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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(cherry picked from commit e468d4af5f5192ab33283464a9f6933044ce47f7)
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---
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 tools/virtiofsd/passthrough_ll.c | 11 ++++++++---
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 1 file changed, 8 insertions(+), 3 deletions(-)
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diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
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index ab1613586e..ccbbec18b0 100644
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--- a/tools/virtiofsd/passthrough_ll.c
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+++ b/tools/virtiofsd/passthrough_ll.c
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@@ -546,9 +546,14 @@ static void lo_init(void *userdata, struct fuse_conn_info *conn)
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         fuse_log(FUSE_LOG_DEBUG, "lo_init: activating writeback\n");
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         conn->want |= FUSE_CAP_WRITEBACK_CACHE;
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     }
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-    if (lo->flock && conn->capable & FUSE_CAP_FLOCK_LOCKS) {
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-        fuse_log(FUSE_LOG_DEBUG, "lo_init: activating flock locks\n");
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-        conn->want |= FUSE_CAP_FLOCK_LOCKS;
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+    if (conn->capable & FUSE_CAP_FLOCK_LOCKS) {
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+        if (lo->flock) {
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+            fuse_log(FUSE_LOG_DEBUG, "lo_init: activating flock locks\n");
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+            conn->want |= FUSE_CAP_FLOCK_LOCKS;
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+        } else {
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+            fuse_log(FUSE_LOG_DEBUG, "lo_init: disabling flock locks\n");
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+            conn->want &= ~FUSE_CAP_FLOCK_LOCKS;
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+        }
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     }
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     if (conn->capable & FUSE_CAP_POSIX_LOCKS) {