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get rid of kill_litter_super()

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Not used anymore.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2025-03-10 00:06:29 -04:00
parent 4433d8e25d
commit fc45aee662
6 changed files with 7 additions and 32 deletions
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7
Documentation/filesystems/porting.rst
View File

@@ -1309,3 +1309,10 @@ a different length, use
vfs_parse_fs_qstr(fc, key, &QSTR_LEN(value, len))
instead.
---
**mandatory**
kill_litter_super() is gone; convert to DCACHE_PERSISTENT use (as all
in-tree filesystems have done).

21
fs/dcache.c
View File

@@ -3167,27 +3167,6 @@ bool is_subdir(struct dentry *new_dentry, struct dentry *old_dentry)
}
EXPORT_SYMBOL(is_subdir);
static enum d_walk_ret d_genocide_kill(void *data, struct dentry *dentry)
{
struct dentry *root = data;
if (dentry != root) {
if (d_unhashed(dentry) || !dentry->d_inode ||
dentry->d_flags & DCACHE_PERSISTENT)
return D_WALK_SKIP;
if (!(dentry->d_flags & DCACHE_GENOCIDE)) {
dentry->d_flags |= DCACHE_GENOCIDE;
dentry->d_lockref.count--;
}
}
return D_WALK_CONTINUE;
}
void d_genocide(struct dentry *parent)
{
d_walk(parent, parent, d_genocide_kill);
}
void d_mark_tmpfile(struct file *file, struct inode *inode)
{
struct dentry *dentry = file->f_path.dentry;

1
fs/internal.h
View File

@@ -227,7 +227,6 @@ extern void shrink_dcache_for_umount(struct super_block *);
extern struct dentry *__d_lookup(const struct dentry *, const struct qstr *);
extern struct dentry *__d_lookup_rcu(const struct dentry *parent,
const struct qstr *name, unsigned *seq);
extern void d_genocide(struct dentry *);
/*
* pipe.c

8
fs/super.c
View File

@@ -1284,14 +1284,6 @@ void kill_anon_super(struct super_block *sb)
}
EXPORT_SYMBOL(kill_anon_super);
void kill_litter_super(struct super_block *sb)
{
if (sb->s_root)
d_genocide(sb->s_root);
kill_anon_super(sb);
}
EXPORT_SYMBOL(kill_litter_super);
int set_anon_super_fc(struct super_block *sb, struct fs_context *fc)
{
return set_anon_super(sb, NULL);

1
include/linux/dcache.h
View File

@@ -198,7 +198,6 @@ enum dentry_flags {
DCACHE_REFERENCED = BIT(6), /* Recently used, don't discard. */
DCACHE_DONTCACHE = BIT(7), /* Purge from memory on final dput() */
DCACHE_CANT_MOUNT = BIT(8),
DCACHE_GENOCIDE = BIT(9),
DCACHE_SHRINK_LIST = BIT(10),
DCACHE_OP_WEAK_REVALIDATE = BIT(11),
/*

1
include/linux/fs.h
View File

@@ -2728,7 +2728,6 @@ void retire_super(struct super_block *sb);
void generic_shutdown_super(struct super_block *sb);
void kill_block_super(struct super_block *sb);
void kill_anon_super(struct super_block *sb);
void kill_litter_super(struct super_block *sb);
void deactivate_super(struct super_block *sb);
void deactivate_locked_super(struct super_block *sb);
int set_anon_super(struct super_block *s, void *data);