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path: root/fs/9p/vfs_inode_dotl.c
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Diffstat (limited to 'fs/9p/vfs_inode_dotl.c')
-rw-r--r--fs/9p/vfs_inode_dotl.c198
1 files changed, 133 insertions, 65 deletions
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index fe3ffa9..67c138e 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -86,40 +86,63 @@ static struct dentry *v9fs_dentry_from_dir_inode(struct inode *inode)
return dentry;
}
+static struct inode *v9fs_qid_iget_dotl(struct super_block *sb,
+ struct p9_qid *qid,
+ struct p9_fid *fid,
+ struct p9_stat_dotl *st)
+{
+ int retval;
+ unsigned long i_ino;
+ struct inode *inode;
+ struct v9fs_session_info *v9ses = sb->s_fs_info;
+
+ i_ino = v9fs_qid2ino(qid);
+ inode = iget_locked(sb, i_ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
+ /*
+ * initialize the inode with the stat info
+ * FIXME!! we may need support for stale inodes
+ * later.
+ */
+ retval = v9fs_init_inode(v9ses, inode, st->st_mode);
+ if (retval)
+ goto error;
+
+ v9fs_stat2inode_dotl(st, inode);
+#ifdef CONFIG_9P_FSCACHE
+ v9fs_fscache_set_key(inode, &st->qid);
+ v9fs_cache_inode_get_cookie(inode);
+#endif
+ retval = v9fs_get_acl(inode, fid);
+ if (retval)
+ goto error;
+
+ unlock_new_inode(inode);
+ return inode;
+error:
+ unlock_new_inode(inode);
+ iput(inode);
+ return ERR_PTR(retval);
+
+}
+
struct inode *
-v9fs_inode_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid,
- struct super_block *sb)
+v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid,
+ struct super_block *sb)
{
- struct inode *ret = NULL;
- int err;
struct p9_stat_dotl *st;
+ struct inode *inode = NULL;
st = p9_client_getattr_dotl(fid, P9_STATS_BASIC);
if (IS_ERR(st))
return ERR_CAST(st);
- ret = v9fs_get_inode(sb, st->st_mode);
- if (IS_ERR(ret)) {
- err = PTR_ERR(ret);
- goto error;
- }
-
- v9fs_stat2inode_dotl(st, ret);
- ret->i_ino = v9fs_qid2ino(&st->qid);
-#ifdef CONFIG_9P_FSCACHE
- v9fs_vcookie_set_qid(ret, &st->qid);
- v9fs_cache_inode_get_cookie(ret);
-#endif
- err = v9fs_get_acl(ret, fid);
- if (err) {
- iput(ret);
- goto error;
- }
- kfree(st);
- return ret;
-error:
+ inode = v9fs_qid_iget_dotl(sb, &st->qid, fid, st);
kfree(st);
- return ERR_PTR(err);
+ return inode;
}
/**
@@ -136,16 +159,17 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
struct nameidata *nd)
{
int err = 0;
- char *name = NULL;
gid_t gid;
int flags;
mode_t mode;
- struct v9fs_session_info *v9ses;
- struct p9_fid *fid = NULL;
- struct p9_fid *dfid, *ofid;
+ char *name = NULL;
struct file *filp;
struct p9_qid qid;
struct inode *inode;
+ struct p9_fid *fid = NULL;
+ struct v9fs_inode *v9inode;
+ struct p9_fid *dfid, *ofid, *inode_fid;
+ struct v9fs_session_info *v9ses;
struct posix_acl *pacl = NULL, *dacl = NULL;
v9ses = v9fs_inode2v9ses(dir);
@@ -196,6 +220,7 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
err);
goto error;
}
+ v9fs_invalidate_inode_attr(dir);
/* instantiate inode and assign the unopened fid to the dentry */
fid = p9_client_walk(dfid, 1, &name, 1);
@@ -205,7 +230,7 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
fid = NULL;
goto error;
}
- inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb);
+ inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err);
@@ -219,6 +244,22 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
/* Now set the ACL based on the default value */
v9fs_set_create_acl(dentry, dacl, pacl);
+ v9inode = V9FS_I(inode);
+ if (v9ses->cache && !v9inode->writeback_fid) {
+ /*
+ * clone a fid and add it to writeback_fid
+ * we do it during open time instead of
+ * page dirty time via write_begin/page_mkwrite
+ * because we want write after unlink usecase
+ * to work.
+ */
+ inode_fid = v9fs_writeback_fid(dentry);
+ if (IS_ERR(inode_fid)) {
+ err = PTR_ERR(inode_fid);
+ goto error;
+ }
+ v9inode->writeback_fid = (void *) inode_fid;
+ }
/* Since we are opening a file, assign the open fid to the file */
filp = lookup_instantiate_filp(nd, dentry, generic_file_open);
if (IS_ERR(filp)) {
@@ -226,6 +267,10 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
return PTR_ERR(filp);
}
filp->private_data = ofid;
+#ifdef CONFIG_9P_FSCACHE
+ if (v9ses->cache)
+ v9fs_cache_inode_set_cookie(inode, filp);
+#endif
return 0;
error:
@@ -300,7 +345,7 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir,
goto error;
}
- inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb);
+ inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n",
@@ -327,7 +372,8 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir,
}
/* Now set the ACL based on the default value */
v9fs_set_create_acl(dentry, dacl, pacl);
-
+ inc_nlink(dir);
+ v9fs_invalidate_inode_attr(dir);
error:
if (fid)
p9_client_clunk(fid);
@@ -346,9 +392,10 @@ v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry,
P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry);
err = -EPERM;
v9ses = v9fs_inode2v9ses(dentry->d_inode);
- if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
- return simple_getattr(mnt, dentry, stat);
-
+ if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
+ generic_fillattr(dentry->d_inode, stat);
+ return 0;
+ }
fid = v9fs_fid_lookup(dentry);
if (IS_ERR(fid))
return PTR_ERR(fid);
@@ -406,16 +453,20 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
if (IS_ERR(fid))
return PTR_ERR(fid);
- retval = p9_client_setattr(fid, &p9attr);
- if (retval < 0)
- return retval;
-
if ((iattr->ia_valid & ATTR_SIZE) &&
iattr->ia_size != i_size_read(dentry->d_inode)) {
retval = vmtruncate(dentry->d_inode, iattr->ia_size);
if (retval)
return retval;
}
+ /* Write all dirty data */
+ if (S_ISREG(dentry->d_inode->i_mode))
+ filemap_write_and_wait(dentry->d_inode->i_mapping);
+
+ retval = p9_client_setattr(fid, &p9attr);
+ if (retval < 0)
+ return retval;
+ v9fs_invalidate_inode_attr(dentry->d_inode);
setattr_copy(dentry->d_inode, iattr);
mark_inode_dirty(dentry->d_inode);
@@ -439,6 +490,7 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
void
v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode)
{
+ struct v9fs_inode *v9inode = V9FS_I(inode);
if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) {
inode->i_atime.tv_sec = stat->st_atime_sec;
@@ -497,20 +549,21 @@ v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode)
/* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION
* because the inode structure does not have fields for them.
*/
+ v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR;
}
static int
v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
const char *symname)
{
- struct v9fs_session_info *v9ses;
- struct p9_fid *dfid;
- struct p9_fid *fid = NULL;
- struct inode *inode;
- struct p9_qid qid;
- char *name;
int err;
gid_t gid;
+ char *name;
+ struct p9_qid qid;
+ struct inode *inode;
+ struct p9_fid *dfid;
+ struct p9_fid *fid = NULL;
+ struct v9fs_session_info *v9ses;
name = (char *) dentry->d_name.name;
P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_symlink_dotl : %lu,%s,%s\n",
@@ -534,6 +587,7 @@ v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
goto error;
}
+ v9fs_invalidate_inode_attr(dir);
if (v9ses->cache) {
/* Now walk from the parent so we can get an unopened fid. */
fid = p9_client_walk(dfid, 1, &name, 1);
@@ -546,7 +600,7 @@ v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
}
/* instantiate inode and assign the unopened fid to dentry */
- inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb);
+ inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n",
@@ -588,10 +642,10 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir,
struct dentry *dentry)
{
int err;
- struct p9_fid *dfid, *oldfid;
char *name;
- struct v9fs_session_info *v9ses;
struct dentry *dir_dentry;
+ struct p9_fid *dfid, *oldfid;
+ struct v9fs_session_info *v9ses;
P9_DPRINTK(P9_DEBUG_VFS, "dir ino: %lu, old_name: %s, new_name: %s\n",
dir->i_ino, old_dentry->d_name.name,
@@ -616,29 +670,17 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir,
return err;
}
+ v9fs_invalidate_inode_attr(dir);
if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
/* Get the latest stat info from server. */
struct p9_fid *fid;
- struct p9_stat_dotl *st;
-
fid = v9fs_fid_lookup(old_dentry);
if (IS_ERR(fid))
return PTR_ERR(fid);
- st = p9_client_getattr_dotl(fid, P9_STATS_BASIC);
- if (IS_ERR(st))
- return PTR_ERR(st);
-
- v9fs_stat2inode_dotl(st, old_dentry->d_inode);
-
- kfree(st);
- } else {
- /* Caching disabled. No need to get upto date stat info.
- * This dentry will be released immediately. So, just hold the
- * inode
- */
- ihold(old_dentry->d_inode);
+ v9fs_refresh_inode_dotl(fid, old_dentry->d_inode);
}
+ ihold(old_dentry->d_inode);
d_instantiate(dentry, old_dentry->d_inode);
return err;
@@ -657,12 +699,12 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode,
dev_t rdev)
{
int err;
+ gid_t gid;
char *name;
mode_t mode;
struct v9fs_session_info *v9ses;
struct p9_fid *fid = NULL, *dfid = NULL;
struct inode *inode;
- gid_t gid;
struct p9_qid qid;
struct dentry *dir_dentry;
struct posix_acl *dacl = NULL, *pacl = NULL;
@@ -699,6 +741,7 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode,
if (err < 0)
goto error;
+ v9fs_invalidate_inode_attr(dir);
/* instantiate inode and assign the unopened fid to the dentry */
if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
fid = p9_client_walk(dfid, 1, &name, 1);
@@ -710,7 +753,7 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode,
goto error;
}
- inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb);
+ inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n",
@@ -782,6 +825,31 @@ ndset:
return NULL;
}
+int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode)
+{
+ loff_t i_size;
+ struct p9_stat_dotl *st;
+ struct v9fs_session_info *v9ses;
+
+ v9ses = v9fs_inode2v9ses(inode);
+ st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
+ if (IS_ERR(st))
+ return PTR_ERR(st);
+
+ spin_lock(&inode->i_lock);
+ /*
+ * We don't want to refresh inode->i_size,
+ * because we may have cached data
+ */
+ i_size = inode->i_size;
+ v9fs_stat2inode_dotl(st, inode);
+ if (v9ses->cache)
+ inode->i_size = i_size;
+ spin_unlock(&inode->i_lock);
+ kfree(st);
+ return 0;
+}
+
const struct inode_operations v9fs_dir_inode_operations_dotl = {
.create = v9fs_vfs_create_dotl,
.lookup = v9fs_vfs_lookup,
generated by cgit v1.1 at 2024-06-02 08:56:23 +0000