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path: root/fs/9p/vfs_super.c
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Diffstat (limited to 'fs/9p/vfs_super.c')
-rw-r--r--fs/9p/vfs_super.c110
1 files changed, 72 insertions, 38 deletions
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index f3eed3383e4..0afd0382822 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -89,7 +89,7 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses,
if (v9ses->cache)
sb->s_bdi->ra_pages = (VM_MAX_READAHEAD * 1024)/PAGE_CACHE_SIZE;
- sb->s_flags = flags | MS_ACTIVE | MS_DIRSYNC | MS_NOATIME;
+ sb->s_flags |= MS_ACTIVE | MS_DIRSYNC | MS_NOATIME;
if (!v9ses->cache)
sb->s_flags |= MS_SYNCHRONOUS;
@@ -117,11 +117,11 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
struct inode *inode = NULL;
struct dentry *root = NULL;
struct v9fs_session_info *v9ses = NULL;
- int mode = S_IRWXUGO | S_ISVTX;
+ umode_t mode = S_IRWXUGO | S_ISVTX;
struct p9_fid *fid;
int retval = 0;
- P9_DPRINTK(P9_DEBUG_VFS, " \n");
+ p9_debug(P9_DEBUG_VFS, "\n");
v9ses = kzalloc(sizeof(struct v9fs_session_info), GFP_KERNEL);
if (!v9ses)
@@ -137,26 +137,26 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
goto close_session;
}
- sb = sget(fs_type, NULL, v9fs_set_super, v9ses);
+ sb = sget(fs_type, NULL, v9fs_set_super, flags, v9ses);
if (IS_ERR(sb)) {
retval = PTR_ERR(sb);
goto clunk_fid;
}
v9fs_fill_super(sb, v9ses, flags, data);
- if (v9ses->cache)
+ if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
sb->s_d_op = &v9fs_cached_dentry_operations;
else
sb->s_d_op = &v9fs_dentry_operations;
- inode = v9fs_get_inode(sb, S_IFDIR | mode);
+ inode = v9fs_get_inode(sb, S_IFDIR | mode, 0);
if (IS_ERR(inode)) {
retval = PTR_ERR(inode);
goto release_sb;
}
- root = d_alloc_root(inode);
+
+ root = d_make_root(inode);
if (!root) {
- iput(inode);
retval = -ENOMEM;
goto release_sb;
}
@@ -185,23 +185,12 @@ 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");
+ p9_debug(P9_DEBUG_VFS, " simple set mount, return 0\n");
return dget(sb->s_root);
clunk_fid:
@@ -210,11 +199,15 @@ 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);
}
@@ -229,15 +222,15 @@ static void v9fs_kill_super(struct super_block *s)
{
struct v9fs_session_info *v9ses = s->s_fs_info;
- P9_DPRINTK(P9_DEBUG_VFS, " %p\n", s);
+ p9_debug(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);
s->s_fs_info = NULL;
- P9_DPRINTK(P9_DEBUG_VFS, "exiting kill_super\n");
+ p9_debug(P9_DEBUG_VFS, "exiting kill_super\n");
}
static void
@@ -266,7 +259,7 @@ static int v9fs_statfs(struct dentry *dentry, struct kstatfs *buf)
if (v9fs_proto_dotl(v9ses)) {
res = p9_client_statfs(fid, &rs);
if (res == 0) {
- buf->f_type = V9FS_MAGIC;
+ buf->f_type = rs.type;
buf->f_bsize = rs.bsize;
buf->f_blocks = rs.blocks;
buf->f_bfree = rs.bfree;
@@ -285,19 +278,11 @@ 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;
v9ses = v9fs_inode2v9ses(inode);
- if (v9ses->cache)
+ if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
return generic_drop_inode(inode);
/*
* in case of non cached mode always drop the
@@ -307,6 +292,53 @@ 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_debug(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.
+ */
+ v9inode = V9FS_I(inode);
+ p9_debug(P9_DEBUG_VFS, "%s: inode %p, writeback_fid %p\n",
+ __func__, inode, v9inode->writeback_fid);
+ 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 +346,18 @@ 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 = {
@@ -332,5 +365,6 @@ struct file_system_type v9fs_fs_type = {
.mount = v9fs_mount,
.kill_sb = v9fs_kill_super,
.owner = THIS_MODULE,
- .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT,
+ .fs_flags = FS_RENAME_DOES_D_MOVE,
};
+MODULE_ALIAS_FS("9p");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-13 07:24:43 +0000