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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  net/9p: nwname should be an unsigned int
  9p: Fix sparse error
  fs/9p: Fix error reported by coccicheck
  9p: revert tsyncfs related changes
  fs/9p: Use write_inode for data sync on server
  fs/9p: Fix revalidate to return correct value
This commit is contained in:
Linus Torvalds 2011-04-15 20:31:15 -07:00
parent e82e6f16a8 b76225e22a
commit 0ebc115da3
11 changed files with 84 additions and 78 deletions
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15
fs/9p/fid.c
View File

@ -286,11 +286,9 @@ static struct p9_fid *v9fs_fid_clone_with_uid(struct dentry *dentry, uid_t uid)
struct p9_fid *v9fs_writeback_fid(struct dentry *dentry)
{
int err, flags;
int err;
struct p9_fid *fid;
struct v9fs_session_info *v9ses;
v9ses = v9fs_dentry2v9ses(dentry);
fid = v9fs_fid_clone_with_uid(dentry, 0);
if (IS_ERR(fid))
goto error_out;
@ -299,17 +297,8 @@ struct p9_fid *v9fs_writeback_fid(struct dentry *dentry)
* dirty pages. We always request for the open fid in read-write
* mode so that a partial page write which result in page
* read can work.
*
* we don't have a tsyncfs operation for older version
* of protocol. So make sure the write back fid is
* opened in O_SYNC mode.
*/
if (!v9fs_proto_dotl(v9ses))
flags = O_RDWR | O_SYNC;
else
flags = O_RDWR;
err = p9_client_open(fid, flags);
err = p9_client_open(fid, O_RDWR);
if (err < 0) {
p9_client_clunk(fid);
fid = ERR_PTR(err);

1
fs/9p/v9fs.h
View File

@ -116,7 +116,6 @@ struct v9fs_session_info {
struct list_head slist; /* list of sessions registered with v9fs */
struct backing_dev_info bdi;
struct rw_semaphore rename_sem;
struct p9_fid *root_fid; /* Used for file system sync */
};
/* cache_validity flags */

4
fs/9p/vfs_dentry.c
View File

@ -126,7 +126,9 @@ static int v9fs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
retval = v9fs_refresh_inode_dotl(fid, inode);
else
retval = v9fs_refresh_inode(fid, inode);
if (retval <= 0)
if (retval == -ENOENT)
return 0;
if (retval < 0)
return retval;
}
out_valid:

2
fs/9p/vfs_inode_dotl.c
View File

@ -811,7 +811,7 @@ v9fs_vfs_follow_link_dotl(struct dentry *dentry, struct nameidata *nd)
fid = v9fs_fid_lookup(dentry);
if (IS_ERR(fid)) {
__putname(link);
link = ERR_PTR(PTR_ERR(fid));
link = ERR_CAST(fid);
goto ndset;
}
retval = p9_client_readlink(fid, &target);

80
fs/9p/vfs_super.c
View File

@ -154,6 +154,7 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
retval = PTR_ERR(inode);
goto release_sb;
}
root = d_alloc_root(inode);
if (!root) {
iput(inode);
@ -185,21 +186,10 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
p9stat_free(st);
kfree(st);
}
v9fs_fid_add(root, fid);
retval = v9fs_get_acl(inode, fid);
if (retval)
goto release_sb;
/*
* Add the root fid to session info. This is used
* for file system sync. We want a cloned fid here
* so that we can do a sync_filesystem after a
* shrink_dcache_for_umount
*/
v9ses->root_fid = v9fs_fid_clone(root);
if (IS_ERR(v9ses->root_fid)) {
retval = PTR_ERR(v9ses->root_fid);
goto release_sb;
}
v9fs_fid_add(root, fid);
P9_DPRINTK(P9_DEBUG_VFS, " simple set mount, return 0\n");
return dget(sb->s_root);
@ -210,11 +200,15 @@ close_session:
v9fs_session_close(v9ses);
kfree(v9ses);
return ERR_PTR(retval);
release_sb:
/*
* we will do the session_close and root dentry
* release in the below call.
* we will do the session_close and root dentry release
* in the below call. But we need to clunk fid, because we haven't
* attached the fid to dentry so it won't get clunked
* automatically.
*/
p9_client_clunk(fid);
deactivate_locked_super(sb);
return ERR_PTR(retval);
}
@ -232,7 +226,7 @@ static void v9fs_kill_super(struct super_block *s)
P9_DPRINTK(P9_DEBUG_VFS, " %p\n", s);
kill_anon_super(s);
p9_client_clunk(v9ses->root_fid);
v9fs_session_cancel(v9ses);
v9fs_session_close(v9ses);
kfree(v9ses);
@ -285,14 +279,6 @@ done:
return res;
}
static int v9fs_sync_fs(struct super_block *sb, int wait)
{
struct v9fs_session_info *v9ses = sb->s_fs_info;
P9_DPRINTK(P9_DEBUG_VFS, "v9fs_sync_fs: super_block %p\n", sb);
return p9_client_sync_fs(v9ses->root_fid);
}
static int v9fs_drop_inode(struct inode *inode)
{
struct v9fs_session_info *v9ses;
@ -307,6 +293,51 @@ static int v9fs_drop_inode(struct inode *inode)
return 1;
}
static int v9fs_write_inode(struct inode *inode,
struct writeback_control *wbc)
{
int ret;
struct p9_wstat wstat;
struct v9fs_inode *v9inode;
/*
* send an fsync request to server irrespective of
* wbc->sync_mode.
*/
P9_DPRINTK(P9_DEBUG_VFS, "%s: inode %p\n", __func__, inode);
v9inode = V9FS_I(inode);
if (!v9inode->writeback_fid)
return 0;
v9fs_blank_wstat(&wstat);
ret = p9_client_wstat(v9inode->writeback_fid, &wstat);
if (ret < 0) {
__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
return ret;
}
return 0;
}
static int v9fs_write_inode_dotl(struct inode *inode,
struct writeback_control *wbc)
{
int ret;
struct v9fs_inode *v9inode;
/*
* send an fsync request to server irrespective of
* wbc->sync_mode.
*/
P9_DPRINTK(P9_DEBUG_VFS, "%s: inode %p\n", __func__, inode);
v9inode = V9FS_I(inode);
if (!v9inode->writeback_fid)
return 0;
ret = p9_client_fsync(v9inode->writeback_fid, 0);
if (ret < 0) {
__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
return ret;
}
return 0;
}
static const struct super_operations v9fs_super_ops = {
.alloc_inode = v9fs_alloc_inode,
.destroy_inode = v9fs_destroy_inode,
@ -314,17 +345,18 @@ static const struct super_operations v9fs_super_ops = {
.evict_inode = v9fs_evict_inode,
.show_options = generic_show_options,
.umount_begin = v9fs_umount_begin,
.write_inode = v9fs_write_inode,
};
static const struct super_operations v9fs_super_ops_dotl = {
.alloc_inode = v9fs_alloc_inode,
.destroy_inode = v9fs_destroy_inode,
.sync_fs = v9fs_sync_fs,
.statfs = v9fs_statfs,
.drop_inode = v9fs_drop_inode,
.evict_inode = v9fs_evict_inode,
.show_options = generic_show_options,
.umount_begin = v9fs_umount_begin,
.write_inode = v9fs_write_inode_dotl,
};
struct file_system_type v9fs_fs_type = {

2
include/net/9p/9p.h
View File

@ -139,8 +139,6 @@ do { \
*/
enum p9_msg_t {
P9_TSYNCFS = 0,
P9_RSYNCFS,
P9_TLERROR = 6,
P9_RLERROR,
P9_TSTATFS = 8,

5
include/net/9p/client.h
View File

@ -218,8 +218,8 @@ void p9_client_disconnect(struct p9_client *clnt);
void p9_client_begin_disconnect(struct p9_client *clnt);
struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
char *uname, u32 n_uname, char *aname);
struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames,
int clone);
struct p9_fid *p9_client_walk(struct p9_fid *oldfid, uint16_t nwname,
char **wnames, int clone);
int p9_client_open(struct p9_fid *fid, int mode);
int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode,
char *extension);
@ -230,7 +230,6 @@ int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
gid_t gid, struct p9_qid *qid);
int p9_client_clunk(struct p9_fid *fid);
int p9_client_fsync(struct p9_fid *fid, int datasync);
int p9_client_sync_fs(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,
u64 offset, u32 count);

29
net/9p/client.c
View File

@ -929,15 +929,15 @@ error:
}
EXPORT_SYMBOL(p9_client_attach);
struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames,
int clone)
struct p9_fid *p9_client_walk(struct p9_fid *oldfid, uint16_t nwname,
char **wnames, int clone)
{
int err;
struct p9_client *clnt;
struct p9_fid *fid;
struct p9_qid *wqids;
struct p9_req_t *req;
int16_t nwqids, count;
uint16_t nwqids, count;
err = 0;
wqids = NULL;
@ -955,7 +955,7 @@ struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames,
fid = oldfid;
P9_DPRINTK(P9_DEBUG_9P, ">>> TWALK fids %d,%d nwname %d wname[0] %s\n",
P9_DPRINTK(P9_DEBUG_9P, ">>> TWALK fids %d,%d nwname %ud wname[0] %s\n",
oldfid->fid, fid->fid, nwname, wnames ? wnames[0] : NULL);
req = p9_client_rpc(clnt, P9_TWALK, "ddT", oldfid->fid, fid->fid,
@ -1220,27 +1220,6 @@ error:
}
EXPORT_SYMBOL(p9_client_fsync);
int p9_client_sync_fs(struct p9_fid *fid)
{
int err = 0;
struct p9_req_t *req;
struct p9_client *clnt;
P9_DPRINTK(P9_DEBUG_9P, ">>> TSYNC_FS fid %d\n", fid->fid);
clnt = fid->clnt;
req = p9_client_rpc(clnt, P9_TSYNCFS, "d", fid->fid);
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto error;
}
P9_DPRINTK(P9_DEBUG_9P, "<<< RSYNCFS fid %d\n", fid->fid);
p9_free_req(clnt, req);
error:
return err;
}
EXPORT_SYMBOL(p9_client_sync_fs);
int p9_client_clunk(struct p9_fid *fid)
{
int err;

7
net/9p/protocol.c
View File

@ -265,7 +265,7 @@ p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt,
}
break;
case 'T':{
int16_t *nwname = va_arg(ap, int16_t *);
uint16_t *nwname = va_arg(ap, uint16_t *);
char ***wnames = va_arg(ap, char ***);
errcode = p9pdu_readf(pdu, proto_version,
@ -468,7 +468,8 @@ p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt,
case 'E':{
int32_t cnt = va_arg(ap, int32_t);
const char *k = va_arg(ap, const void *);
const char *u = va_arg(ap, const void *);
const char __user *u = va_arg(ap,
const void __user *);
errcode = p9pdu_writef(pdu, proto_version, "d",
cnt);
if (!errcode && pdu_write_urw(pdu, k, u, cnt))
@ -495,7 +496,7 @@ p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt,
}
break;
case 'T':{
int16_t nwname = va_arg(ap, int);
uint16_t nwname = va_arg(ap, int);
const char **wnames = va_arg(ap, const char **);
errcode = p9pdu_writef(pdu, proto_version, "w",

2
net/9p/trans_common.c
View File

@ -66,7 +66,7 @@ p9_payload_gup(struct p9_req_t *req, size_t *pdata_off, int *pdata_len,
uint32_t pdata_mapped_pages;
struct trans_rpage_info *rpinfo;
*pdata_off = (size_t)req->tc->pubuf & (PAGE_SIZE-1);
*pdata_off = (__force size_t)req->tc->pubuf & (PAGE_SIZE-1);
if (*pdata_off)
first_page_bytes = min(((size_t)PAGE_SIZE - *pdata_off),

15
net/9p/trans_virtio.c
View File

@ -326,8 +326,11 @@ req_retry_pinned:
outp = pack_sg_list_p(chan->sg, out, VIRTQUEUE_NUM,
pdata_off, rpinfo->rp_data, pdata_len);
} else {
char *pbuf = req->tc->pubuf ? req->tc->pubuf :
req->tc->pkbuf;
char *pbuf;
if (req->tc->pubuf)
pbuf = (__force char *) req->tc->pubuf;
else
pbuf = req->tc->pkbuf;
outp = pack_sg_list(chan->sg, out, VIRTQUEUE_NUM, pbuf,
req->tc->pbuf_size);
}
@ -352,8 +355,12 @@ req_retry_pinned:
in = pack_sg_list_p(chan->sg, out+inp, VIRTQUEUE_NUM,
pdata_off, rpinfo->rp_data, pdata_len);
} else {
char *pbuf = req->tc->pubuf ? req->tc->pubuf :
req->tc->pkbuf;
char *pbuf;
if (req->tc->pubuf)
pbuf = (__force char *) req->tc->pubuf;
else
pbuf = req->tc->pkbuf;
in = pack_sg_list(chan->sg, out+inp, VIRTQUEUE_NUM,
pbuf, req->tc->pbuf_size);
}