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Commit 920e65dc authored by Venkateswararao Jujjuri (JV)'s avatar Venkateswararao Jujjuri (JV) Committed by Eric Van Hensbergen
Browse files

[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: default avatarVenkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>
parent b04faaf3

fs/9p/vfs_file.c

+16 −2
Original line number Original line Diff line number Diff line
@@ -290,6 +290,20 @@ static int v9fs_file_fsync(struct file *filp, int datasync) 
	return retval;

	return retval;

}

}





static int v9fs_file_fsync_dotl(struct file *filp, int datasync)

{

	struct p9_fid *fid;

	int retval;



	P9_DPRINTK(P9_DEBUG_VFS, "v9fs_file_fsync_dotl: filp %p datasync %x\n",

			filp, datasync);



	fid = filp->private_data;



	retval = p9_client_fsync(fid);

	return retval;

}



static const struct file_operations v9fs_cached_file_operations = {

static const struct file_operations v9fs_cached_file_operations = {

	.llseek = generic_file_llseek,

	.llseek = generic_file_llseek,

	.read = do_sync_read,

	.read = do_sync_read,
@@ -311,7 +325,7 @@ static const struct file_operations v9fs_cached_file_operations_dotl = { 
	.release = v9fs_dir_release,

	.release = v9fs_dir_release,

	.lock = v9fs_file_lock,

	.lock = v9fs_file_lock,

	.mmap = generic_file_readonly_mmap,

	.mmap = generic_file_readonly_mmap,

	.fsync = v9fs_file_fsync,

	.fsync = v9fs_file_fsync_dotl,

};

};





const struct file_operations v9fs_file_operations = {

const struct file_operations v9fs_file_operations = {
@@ -333,5 +347,5 @@ const struct file_operations v9fs_file_operations_dotl = { 
	.release = v9fs_dir_release,

	.release = v9fs_dir_release,

	.lock = v9fs_file_lock,

	.lock = v9fs_file_lock,

	.mmap = generic_file_readonly_mmap,

	.mmap = generic_file_readonly_mmap,

	.fsync = v9fs_file_fsync,

	.fsync = v9fs_file_fsync_dotl,

};
 
};

include/net/9p/9p.h

+2 −0
Original line number Original line Diff line number Diff line
@@ -163,6 +163,8 @@ enum p9_msg_t { 
	P9_RXATTRCREATE,

	P9_RXATTRCREATE,

	P9_TREADDIR = 40,

	P9_TREADDIR = 40,

	P9_RREADDIR,

	P9_RREADDIR,

	P9_TFSYNC = 50,

	P9_RFSYNC,

	P9_TLINK = 70,

	P9_TLINK = 70,

	P9_RLINK,

	P9_RLINK,

	P9_TMKDIR = 72,

	P9_TMKDIR = 72,

include/net/9p/client.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -229,6 +229,7 @@ int p9_client_symlink(struct p9_fid *fid, char *name, char *symname, gid_t gid, 
int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,

int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,

		gid_t gid, struct p9_qid *qid);

		gid_t gid, struct p9_qid *qid);

int p9_client_clunk(struct p9_fid *fid);

int p9_client_clunk(struct p9_fid *fid);

int p9_client_fsync(struct p9_fid *fid);

int p9_client_remove(struct p9_fid *fid);

int p9_client_remove(struct p9_fid *fid);

int p9_client_read(struct p9_fid *fid, char *data, char __user *udata,

int p9_client_read(struct p9_fid *fid, char *data, char __user *udata,

							u64 offset, u32 count);

							u64 offset, u32 count);

net/9p/client.c

+25 −0
Original line number Original line Diff line number Diff line
@@ -1162,6 +1162,31 @@ int p9_client_link(struct p9_fid *dfid, struct p9_fid *oldfid, char *newname) 
}

}

EXPORT_SYMBOL(p9_client_link);

EXPORT_SYMBOL(p9_client_link);





int p9_client_fsync(struct p9_fid *fid)

{

	int err;

	struct p9_client *clnt;

	struct p9_req_t *req;



	P9_DPRINTK(P9_DEBUG_9P, ">>> TFSYNC fid %d\n", fid->fid);

	err = 0;

	clnt = fid->clnt;



	req = p9_client_rpc(clnt, P9_TFSYNC, "d", fid->fid);

	if (IS_ERR(req)) {

		err = PTR_ERR(req);

		goto error;

	}



	P9_DPRINTK(P9_DEBUG_9P, "<<< RFSYNC fid %d\n", fid->fid);



	p9_free_req(clnt, req);



error:

	return err;

}

EXPORT_SYMBOL(p9_client_fsync);



int p9_client_clunk(struct p9_fid *fid)

int p9_client_clunk(struct p9_fid *fid)

{

{

	int err;

	int err;