[9p] Introduce client side TFSYNC/RFSYNC for dotl.
SYNOPSIS size[4] Tfsync tag[2] fid[4] size[4] Rfsync tag[2] DESCRIPTION The Tfsync transaction transfers ("flushes") all modified in-core data of file identified by fid to the disk device (or other permanent storage device) where that file resides. Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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@ -290,6 +290,20 @@ static int v9fs_file_fsync(struct file *filp, int datasync)
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return retval;
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return retval;
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}
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}
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static int v9fs_file_fsync_dotl(struct file *filp, int datasync)
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{
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struct p9_fid *fid;
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int retval;
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P9_DPRINTK(P9_DEBUG_VFS, "v9fs_file_fsync_dotl: filp %p datasync %x\n",
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filp, datasync);
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fid = filp->private_data;
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retval = p9_client_fsync(fid);
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return retval;
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}
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static const struct file_operations v9fs_cached_file_operations = {
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static const struct file_operations v9fs_cached_file_operations = {
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.llseek = generic_file_llseek,
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.llseek = generic_file_llseek,
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.read = do_sync_read,
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.read = do_sync_read,
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@ -311,7 +325,7 @@ static const struct file_operations v9fs_cached_file_operations_dotl = {
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.release = v9fs_dir_release,
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.release = v9fs_dir_release,
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.lock = v9fs_file_lock,
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.lock = v9fs_file_lock,
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.mmap = generic_file_readonly_mmap,
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.mmap = generic_file_readonly_mmap,
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.fsync = v9fs_file_fsync,
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.fsync = v9fs_file_fsync_dotl,
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};
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};
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const struct file_operations v9fs_file_operations = {
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const struct file_operations v9fs_file_operations = {
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@ -333,5 +347,5 @@ const struct file_operations v9fs_file_operations_dotl = {
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.release = v9fs_dir_release,
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.release = v9fs_dir_release,
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.lock = v9fs_file_lock,
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.lock = v9fs_file_lock,
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.mmap = generic_file_readonly_mmap,
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.mmap = generic_file_readonly_mmap,
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.fsync = v9fs_file_fsync,
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.fsync = v9fs_file_fsync_dotl,
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};
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};
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@ -163,6 +163,8 @@ enum p9_msg_t {
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P9_RXATTRCREATE,
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P9_RXATTRCREATE,
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P9_TREADDIR = 40,
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P9_TREADDIR = 40,
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P9_RREADDIR,
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P9_RREADDIR,
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P9_TFSYNC = 50,
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P9_RFSYNC,
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P9_TLINK = 70,
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P9_TLINK = 70,
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P9_RLINK,
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P9_RLINK,
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P9_TMKDIR = 72,
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P9_TMKDIR = 72,
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@ -229,6 +229,7 @@ int p9_client_symlink(struct p9_fid *fid, char *name, char *symname, gid_t gid,
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int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
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int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
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gid_t gid, struct p9_qid *qid);
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gid_t gid, struct p9_qid *qid);
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int p9_client_clunk(struct p9_fid *fid);
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int p9_client_clunk(struct p9_fid *fid);
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int p9_client_fsync(struct p9_fid *fid);
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int p9_client_remove(struct p9_fid *fid);
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int p9_client_remove(struct p9_fid *fid);
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int p9_client_read(struct p9_fid *fid, char *data, char __user *udata,
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int p9_client_read(struct p9_fid *fid, char *data, char __user *udata,
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u64 offset, u32 count);
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u64 offset, u32 count);
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@ -1162,6 +1162,31 @@ int p9_client_link(struct p9_fid *dfid, struct p9_fid *oldfid, char *newname)
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}
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}
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EXPORT_SYMBOL(p9_client_link);
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EXPORT_SYMBOL(p9_client_link);
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int p9_client_fsync(struct p9_fid *fid)
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{
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int err;
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struct p9_client *clnt;
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struct p9_req_t *req;
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P9_DPRINTK(P9_DEBUG_9P, ">>> TFSYNC fid %d\n", fid->fid);
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err = 0;
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clnt = fid->clnt;
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req = p9_client_rpc(clnt, P9_TFSYNC, "d", fid->fid);
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if (IS_ERR(req)) {
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err = PTR_ERR(req);
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goto error;
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}
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P9_DPRINTK(P9_DEBUG_9P, "<<< RFSYNC fid %d\n", fid->fid);
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p9_free_req(clnt, req);
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error:
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return err;
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}
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EXPORT_SYMBOL(p9_client_fsync);
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int p9_client_clunk(struct p9_fid *fid)
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int p9_client_clunk(struct p9_fid *fid)
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{
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{
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int err;
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int err;
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