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unexport d_alloc_pseudo()

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No modular uses since introducion of alloc_file_pseudo(),
and the only non-modular user not in alloc_file_pseudo()
had actually been wrong - should've been d_alloc_anon().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2019-03-15 22:58:11 -04:00
parent ce285c267a
commit ab1152dd56
4 changed files with 9 additions and 2 deletions
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5
Documentation/filesystems/porting
View file

@ -643,3 +643,8 @@ in your dentry operations instead.
DCACHE_RCUACCESS is gone; having an RCU delay on dentry freeing is the DCACHE_RCUACCESS is gone; having an RCU delay on dentry freeing is the
default. DCACHE_NORCU opts out, and only d_alloc_pseudo() has any default. DCACHE_NORCU opts out, and only d_alloc_pseudo() has any
business doing so. business doing so.
--
[mandatory]
d_alloc_pseudo() is internal-only; uses outside of alloc_file_pseudo() are
very suspect (and won't work in modules). Such uses are very likely to
be misspelled d_alloc_anon().

4
fs/dcache.c
View file

@ -1742,6 +1742,9 @@ struct dentry *d_alloc_cursor(struct dentry * parent)
* never be anyone's children or parents. Unlike all other * never be anyone's children or parents. Unlike all other
* dentries, these will not have RCU delay between dropping the * dentries, these will not have RCU delay between dropping the
* last reference and freeing them. * last reference and freeing them.
*
* The only user is alloc_file_pseudo() and that's what should
* be considered a public interface. Don't use directly.
*/ */
struct dentry *d_alloc_pseudo(struct super_block *sb, const struct qstr *name) struct dentry *d_alloc_pseudo(struct super_block *sb, const struct qstr *name)
{ {
@ -1750,7 +1753,6 @@ struct dentry *d_alloc_pseudo(struct super_block *sb, const struct qstr *name)
dentry->d_flags |= DCACHE_NORCU; dentry->d_flags |= DCACHE_NORCU;
return dentry; return dentry;
} }
EXPORT_SYMBOL(d_alloc_pseudo);
struct dentry *d_alloc_name(struct dentry *parent, const char *name) struct dentry *d_alloc_name(struct dentry *parent, const char *name)
{ {

1
fs/internal.h
View file

@ -155,6 +155,7 @@ extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
extern int d_set_mounted(struct dentry *dentry); extern int d_set_mounted(struct dentry *dentry);
extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc); extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
extern struct dentry *d_alloc_cursor(struct dentry *); extern struct dentry *d_alloc_cursor(struct dentry *);
extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *);
/* /*
* read_write.c * read_write.c

1
include/linux/dcache.h
View file

@ -235,7 +235,6 @@ extern void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op
/* allocate/de-allocate */ /* allocate/de-allocate */
extern struct dentry * d_alloc(struct dentry *, const struct qstr *); extern struct dentry * d_alloc(struct dentry *, const struct qstr *);
extern struct dentry * d_alloc_anon(struct super_block *); extern struct dentry * d_alloc_anon(struct super_block *);
extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *);
extern struct dentry * d_alloc_parallel(struct dentry *, const struct qstr *, extern struct dentry * d_alloc_parallel(struct dentry *, const struct qstr *,
wait_queue_head_t *); wait_queue_head_t *);
extern struct dentry * d_splice_alias(struct inode *, struct dentry *); extern struct dentry * d_splice_alias(struct inode *, struct dentry *);