diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-10-12 19:11:23 +0530 |
|---|---|---|
| committer | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-10-12 19:11:23 +0530 |
| commit | d3ab98e6919e9491f8ed7ffe37af73d35a55e1ca (patch) | |
| tree | 0e805d6c9a58229dbc51f92b3ff3ee9d430e1c02 /fsdev | |
| parent | 5745e38afeaa15153c2209674fe37e1cbdd65707 (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 'fsdev')
| -rw-r--r-- | fsdev/file-op-9p.h | 4 | ||||
| -rw-r--r-- | fsdev/qemu-fsdev.c | 10 | ||||
| -rw-r--r-- | fsdev/qemu-fsdev.h | 1 |
3 files changed, 13 insertions, 2 deletions
diff --git a/fsdev/file-op-9p.h b/fsdev/file-op-9p.h index 8de8abfd5..af3ecbecb 100644 --- a/fsdev/file-op-9p.h +++ b/fsdev/file-op-9p.h @@ -53,12 +53,16 @@ struct xattr_operations; /* FsContext flag values */ #define PATHNAME_FSCONTEXT 0x1 +/* export flags */ +#define V9FS_IMMEDIATE_WRITEOUT 0x1 + typedef struct FsContext { int flags; char *fs_root; SecModel fs_sm; uid_t uid; + int export_flags; struct xattr_operations **xops; /* fs driver specific data */ void *private; diff --git a/fsdev/qemu-fsdev.c b/fsdev/qemu-fsdev.c index 768819f57..946bad799 100644 --- a/fsdev/qemu-fsdev.c +++ b/fsdev/qemu-fsdev.c @@ -34,6 +34,8 @@ int qemu_fsdev_add(QemuOpts *opts) const char *fstype = qemu_opt_get(opts, "fstype"); const char *path = qemu_opt_get(opts, "path"); const char *sec_model = qemu_opt_get(opts, "security_model"); + const char *writeout = qemu_opt_get(opts, "writeout"); + if (!fsdev_id) { fprintf(stderr, "fsdev: No id specified\n"); @@ -72,10 +74,14 @@ int qemu_fsdev_add(QemuOpts *opts) fsle->fse.path = g_strdup(path); fsle->fse.security_model = g_strdup(sec_model); fsle->fse.ops = FsTypes[i].ops; - + fsle->fse.export_flags = 0; + if (writeout) { + if (!strcmp(writeout, "immediate")) { + fsle->fse.export_flags = V9FS_IMMEDIATE_WRITEOUT; + } + } QTAILQ_INSERT_TAIL(&fstype_entries, fsle, next); return 0; - } FsTypeEntry *get_fsdev_fsentry(char *id) diff --git a/fsdev/qemu-fsdev.h b/fsdev/qemu-fsdev.h index e04931a58..3b2feb464 100644 --- a/fsdev/qemu-fsdev.h +++ b/fsdev/qemu-fsdev.h @@ -41,6 +41,7 @@ typedef struct FsTypeEntry { char *fsdev_id; char *path; char *security_model; + int export_flags; FileOperations *ops; } FsTypeEntry; |