Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
convert functionfs
All files are regular; ep0 is there all along, other ep* may appear
and go away during the filesystem lifetime; all of those are guaranteed
to be gone by the time we umount it.
Object creation is in ffs_sb_create_file(), removals - at ->kill_sb()
time (for ep0) or by simple_remove_by_name() from ffs_epfiles_destroy()
(for the rest of them).
Switch ffs_sb_create_file() to simple_start_creating()/d_make_persistent()/
simple_done_creating() and that's it.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
+9
-8
+9
-8
drivers/usb/gadget/function/f_fs.c
+9
-8
drivers/usb/gadget/function/f_fs.c
···
1899
1899
struct dentry *dentry;
1900
1900
struct inode *inode;
1901
1901
1902
-
dentry = d_alloc_name(sb->s_root, name);
1903
-
if (!dentry)
1904
-
return -ENOMEM;
1905
-
1906
1902
inode = ffs_sb_make_inode(sb, data, fops, NULL, &ffs->file_perms);
1907
-
if (!inode) {
1908
-
dput(dentry);
1903
+
if (!inode)
1909
1904
return -ENOMEM;
1905
+
dentry = simple_start_creating(sb->s_root, name);
1906
+
if (IS_ERR(dentry)) {
1907
+
iput(inode);
1908
+
return PTR_ERR(dentry);
1910
1909
}
1911
1910
1912
-
d_add(dentry, inode);
1911
+
d_make_persistent(dentry, inode);
1912
+
1913
+
simple_done_creating(dentry);
1913
1914
return 0;
1914
1915
}
1915
1916
···
2099
2098
static void
2100
2099
ffs_fs_kill_sb(struct super_block *sb)
2101
2100
{
2102
-
kill_litter_super(sb);
2101
+
kill_anon_super(sb);
2103
2102
if (sb->s_fs_info) {
2104
2103
struct ffs_data *ffs = sb->s_fs_info;
2105
2104
ffs->state = FFS_CLOSING;