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

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  net/9p: Fix the msize calculation.
  fs/9p: add 9P2000.L unlinkat operation
  fs/9p: add 9P2000.L renameat operation
  fs/9p: Always ask new inode in create
  fs/9p: Clean-up get_protocol_version() to use strcmp
  fs/9p: Fix invalid mount options/args
  fs/9p: When doing inode lookup compare qid details and inode mode bits.
  fs/9p: Fid is not valid after a failed clunk.
  net/9p: Remove structure not used in the code
  VirtIO can transfer VIRTQUEUE_NUM of pages.
  Fix the size of receive buffer packing onto VirtIO ring.
  9p: clean up packet dump code
  fs/9p: remove rename work around in 9p
  net/9p: fix client code to fail more gracefully on protocol error
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@torvalds
torvalds committed Jul 23, 2011
2 parents 807094c + c9ffb05 commit 9d1c021
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Showing 13 changed files with 370 additions and 332 deletions.
20 changes: 9 additions & 11 deletions fs/9p/cache.c
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Original file line number Diff line number Diff line change
Expand Up @@ -108,11 +108,10 @@ static uint16_t v9fs_cache_inode_get_key(const void *cookie_netfs_data,
void *buffer, uint16_t bufmax)
{
const struct v9fs_inode *v9inode = cookie_netfs_data;
memcpy(buffer, &v9inode->fscache_key->path,
sizeof(v9inode->fscache_key->path));
memcpy(buffer, &v9inode->qid.path, sizeof(v9inode->qid.path));
P9_DPRINTK(P9_DEBUG_FSC, "inode %p get key %llu", &v9inode->vfs_inode,
v9inode->fscache_key->path);
return sizeof(v9inode->fscache_key->path);
v9inode->qid.path);
return sizeof(v9inode->qid.path);
}

static void v9fs_cache_inode_get_attr(const void *cookie_netfs_data,
Expand All @@ -129,11 +128,10 @@ static uint16_t v9fs_cache_inode_get_aux(const void *cookie_netfs_data,
void *buffer, uint16_t buflen)
{
const struct v9fs_inode *v9inode = cookie_netfs_data;
memcpy(buffer, &v9inode->fscache_key->version,
sizeof(v9inode->fscache_key->version));
memcpy(buffer, &v9inode->qid.version, sizeof(v9inode->qid.version));
P9_DPRINTK(P9_DEBUG_FSC, "inode %p get aux %u", &v9inode->vfs_inode,
v9inode->fscache_key->version);
return sizeof(v9inode->fscache_key->version);
v9inode->qid.version);
return sizeof(v9inode->qid.version);
}

static enum
Expand All @@ -143,11 +141,11 @@ fscache_checkaux v9fs_cache_inode_check_aux(void *cookie_netfs_data,
{
const struct v9fs_inode *v9inode = cookie_netfs_data;

if (buflen != sizeof(v9inode->fscache_key->version))
if (buflen != sizeof(v9inode->qid.version))
return FSCACHE_CHECKAUX_OBSOLETE;

if (memcmp(buffer, &v9inode->fscache_key->version,
sizeof(v9inode->fscache_key->version)))
if (memcmp(buffer, &v9inode->qid.version,
sizeof(v9inode->qid.version)))
return FSCACHE_CHECKAUX_OBSOLETE;

return FSCACHE_CHECKAUX_OKAY;
Expand Down
9 changes: 0 additions & 9 deletions fs/9p/cache.h
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Original file line number Diff line number Diff line change
Expand Up @@ -93,15 +93,6 @@ static inline void v9fs_uncache_page(struct inode *inode, struct page *page)
BUG_ON(PageFsCache(page));
}

static inline void v9fs_fscache_set_key(struct inode *inode,
struct p9_qid *qid)
{
struct v9fs_inode *v9inode = V9FS_I(inode);
spin_lock(&v9inode->fscache_lock);
v9inode->fscache_key = qid;
spin_unlock(&v9inode->fscache_lock);
}

static inline void v9fs_fscache_wait_on_page_write(struct inode *inode,
struct page *page)
{
Expand Down
45 changes: 35 additions & 10 deletions fs/9p/v9fs.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,25 @@ static const match_table_t tokens = {
{Opt_err, NULL}
};

/* Interpret mount options for cache mode */
static int get_cache_mode(char *s)
{
int version = -EINVAL;

if (!strcmp(s, "loose")) {
version = CACHE_LOOSE;
P9_DPRINTK(P9_DEBUG_9P, "Cache mode: loose\n");
} else if (!strcmp(s, "fscache")) {
version = CACHE_FSCACHE;
P9_DPRINTK(P9_DEBUG_9P, "Cache mode: fscache\n");
} else if (!strcmp(s, "none")) {
version = CACHE_NONE;
P9_DPRINTK(P9_DEBUG_9P, "Cache mode: none\n");
} else
printk(KERN_INFO "9p: Unknown Cache mode %s.\n", s);
return version;
}

/**
* v9fs_parse_options - parse mount options into session structure
* @v9ses: existing v9fs session information
Expand All @@ -97,7 +116,7 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
/* setup defaults */
v9ses->afid = ~0;
v9ses->debug = 0;
v9ses->cache = 0;
v9ses->cache = CACHE_NONE;
#ifdef CONFIG_9P_FSCACHE
v9ses->cachetag = NULL;
#endif
Expand Down Expand Up @@ -171,13 +190,13 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
"problem allocating copy of cache arg\n");
goto free_and_return;
}
ret = get_cache_mode(s);
if (ret == -EINVAL) {
kfree(s);
goto free_and_return;
}

if (strcmp(s, "loose") == 0)
v9ses->cache = CACHE_LOOSE;
else if (strcmp(s, "fscache") == 0)
v9ses->cache = CACHE_FSCACHE;
else
v9ses->cache = CACHE_NONE;
v9ses->cache = ret;
kfree(s);
break;

Expand All @@ -200,9 +219,15 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
} else {
v9ses->flags |= V9FS_ACCESS_SINGLE;
v9ses->uid = simple_strtoul(s, &e, 10);
if (*e != '\0')
v9ses->uid = ~0;
if (*e != '\0') {
ret = -EINVAL;
printk(KERN_INFO "9p: Unknown access "
"argument %s.\n", s);
kfree(s);
goto free_and_return;
}
}

kfree(s);
break;

Expand Down Expand Up @@ -487,8 +512,8 @@ static void v9fs_inode_init_once(void *foo)
struct v9fs_inode *v9inode = (struct v9fs_inode *)foo;
#ifdef CONFIG_9P_FSCACHE
v9inode->fscache = NULL;
v9inode->fscache_key = NULL;
#endif
memset(&v9inode->qid, 0, sizeof(v9inode->qid));
inode_init_once(&v9inode->vfs_inode);
}

Expand Down
29 changes: 24 additions & 5 deletions fs/9p/v9fs.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -125,8 +125,8 @@ struct v9fs_inode {
#ifdef CONFIG_9P_FSCACHE
spinlock_t fscache_lock;
struct fscache_cookie *fscache;
struct p9_qid *fscache_key;
#endif
struct p9_qid qid;
unsigned int cache_validity;
struct p9_fid *writeback_fid;
struct mutex v_mutex;
Expand All @@ -153,13 +153,13 @@ extern void v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd,
void *p);
extern struct inode *v9fs_inode_from_fid(struct v9fs_session_info *v9ses,
struct p9_fid *fid,
struct super_block *sb);
struct super_block *sb, int new);
extern const struct inode_operations v9fs_dir_inode_operations_dotl;
extern const struct inode_operations v9fs_file_inode_operations_dotl;
extern const struct inode_operations v9fs_symlink_inode_operations_dotl;
extern struct inode *v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses,
struct p9_fid *fid,
struct super_block *sb);
struct super_block *sb, int new);

/* other default globals */
#define V9FS_PORT 564
Expand Down Expand Up @@ -201,8 +201,27 @@ v9fs_get_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid,
struct super_block *sb)
{
if (v9fs_proto_dotl(v9ses))
return v9fs_inode_from_fid_dotl(v9ses, fid, sb);
return v9fs_inode_from_fid_dotl(v9ses, fid, sb, 0);
else
return v9fs_inode_from_fid(v9ses, fid, sb);
return v9fs_inode_from_fid(v9ses, fid, sb, 0);
}

/**
* v9fs_get_new_inode_from_fid - Helper routine to populate an inode by
* issuing a attribute request
* @v9ses: session information
* @fid: fid to issue attribute request for
* @sb: superblock on which to create inode
*
*/
static inline struct inode *
v9fs_get_new_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid,
struct super_block *sb)
{
if (v9fs_proto_dotl(v9ses))
return v9fs_inode_from_fid_dotl(v9ses, fid, sb, 1);
else
return v9fs_inode_from_fid(v9ses, fid, sb, 1);
}

#endif
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