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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2011-10-12 19:11:23 +0530
committerAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2011-10-12 19:11:23 +0530
commitd3ab98e6919e9491f8ed7ffe37af73d35a55e1ca (patch)
tree0e805d6c9a58229dbc51f92b3ff3ee9d430e1c02 /qemu-options.hx
parent5745e38afeaa15153c2209674fe37e1cbdd65707 (diff)
hw/9pfs: Add new virtfs option writeout=immediate skip host page cache
writeout=immediate implies the after pwritev we do a sync_file_range. Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Diffstat (limited to 'qemu-options.hx')
-rw-r--r--qemu-options.hx17
1 files changed, 12 insertions, 5 deletions
diff --git a/qemu-options.hx b/qemu-options.hx
index dfbabd0088..20fd7b506f 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -525,7 +525,8 @@ ETEXI
DEFHEADING(File system options:)
DEF("fsdev", HAS_ARG, QEMU_OPTION_fsdev,
- "-fsdev local,id=id,path=path,security_model=[mapped|passthrough|none]\n",
+ "-fsdev local,id=id,path=path,security_model=[mapped|passthrough|none]\n"
+ " [,writeout=immediate]\n",
QEMU_ARCH_ALL)
STEXI
@@ -541,7 +542,7 @@ The specific Fstype will determine the applicable options.
Options to each backend are described below.
-@item -fsdev local ,id=@var{id} ,path=@var{path} ,security_model=@var{security_model}
+@item -fsdev local ,id=@var{id} ,path=@var{path} ,security_model=@var{security_model}[,writeout=@var{writeout}]
Create a file-system-"device" for local-filesystem.
@@ -552,13 +553,17 @@ Create a file-system-"device" for local-filesystem.
@option{security_model} specifies the security model to be followed.
@option{security_model} is required.
+@option{writeout} specifies whether to skip the host page cache.
+@option{writeout} is an optional argument.
+
@end table
ETEXI
DEFHEADING(Virtual File system pass-through options:)
DEF("virtfs", HAS_ARG, QEMU_OPTION_virtfs,
- "-virtfs local,path=path,mount_tag=tag,security_model=[mapped|passthrough|none]\n",
+ "-virtfs local,path=path,mount_tag=tag,security_model=[mapped|passthrough|none]\n"
+ " [,writeout=immediate]\n",
QEMU_ARCH_ALL)
STEXI
@@ -574,7 +579,7 @@ The specific Fstype will determine the applicable options.
Options to each backend are described below.
-@item -virtfs local ,path=@var{path} ,mount_tag=@var{mount_tag} ,security_model=@var{security_model}
+@item -virtfs local ,path=@var{path} ,mount_tag=@var{mount_tag} ,security_model=@var{security_model}[,writeout=@var{writeout}]
Create a Virtual file-system-pass through for local-filesystem.
@@ -585,10 +590,12 @@ Create a Virtual file-system-pass through for local-filesystem.
@option{security_model} specifies the security model to be followed.
@option{security_model} is required.
-
@option{mount_tag} specifies the tag with which the exported file is mounted.
@option{mount_tag} is required.
+@option{writeout} specifies whether to skip the host page cache.
+@option{writeout} is an optional argument.
+
@end table
ETEXI