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kill d_{is,set}_fallthru()

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Introduced in 2015 and never had any in-tree users...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2023-11-10 14:32:05 -05:00
parent 0bec65a80f
commit 8219cb58fe
2 changed files with 6 additions and 31 deletions
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20
fs/dcache.c
View File

@ -344,7 +344,7 @@ static inline void __d_set_inode_and_type(struct dentry *dentry,
dentry->d_inode = inode; dentry->d_inode = inode;
flags = READ_ONCE(dentry->d_flags); flags = READ_ONCE(dentry->d_flags);
flags &= ~(DCACHE_ENTRY_TYPE | DCACHE_FALLTHRU); flags &= ~DCACHE_ENTRY_TYPE;
flags |= type_flags; flags |= type_flags;
smp_store_release(&dentry->d_flags, flags); smp_store_release(&dentry->d_flags, flags);
} }
@ -353,7 +353,7 @@ static inline void __d_clear_type_and_inode(struct dentry *dentry)
{ {
unsigned flags = READ_ONCE(dentry->d_flags); unsigned flags = READ_ONCE(dentry->d_flags);
flags &= ~(DCACHE_ENTRY_TYPE | DCACHE_FALLTHRU); flags &= ~DCACHE_ENTRY_TYPE;
WRITE_ONCE(dentry->d_flags, flags); WRITE_ONCE(dentry->d_flags, flags);
dentry->d_inode = NULL; dentry->d_inode = NULL;
if (dentry->d_flags & DCACHE_LRU_LIST) if (dentry->d_flags & DCACHE_LRU_LIST)
@ -1936,22 +1936,6 @@ void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op)
} }
EXPORT_SYMBOL(d_set_d_op); EXPORT_SYMBOL(d_set_d_op);
/*
* d_set_fallthru - Mark a dentry as falling through to a lower layer
* @dentry - The dentry to mark
*
* Mark a dentry as falling through to the lower layer (as set with
* d_pin_lower()). This flag may be recorded on the medium.
*/
void d_set_fallthru(struct dentry *dentry)
{
spin_lock(&dentry->d_lock);
dentry->d_flags |= DCACHE_FALLTHRU;
spin_unlock(&dentry->d_lock);
}
EXPORT_SYMBOL(d_set_fallthru);
static unsigned d_flags_for_inode(struct inode *inode) static unsigned d_flags_for_inode(struct inode *inode)
{ {
unsigned add_flags = DCACHE_REGULAR_TYPE; unsigned add_flags = DCACHE_REGULAR_TYPE;

17
include/linux/dcache.h
View File

@ -195,16 +195,15 @@ struct dentry_operations {
#define DCACHE_LRU_LIST BIT(19) #define DCACHE_LRU_LIST BIT(19)
#define DCACHE_ENTRY_TYPE (7 << 20) /* bits 20..22 are for storing type: */ #define DCACHE_ENTRY_TYPE (7 << 20) /* bits 20..22 are for storing type: */
#define DCACHE_MISS_TYPE (0 << 20) /* Negative dentry (maybe fallthru to nowhere) */ #define DCACHE_MISS_TYPE (0 << 20) /* Negative dentry */
#define DCACHE_WHITEOUT_TYPE (1 << 20) /* Whiteout dentry (stop pathwalk) */ #define DCACHE_WHITEOUT_TYPE (1 << 20) /* Whiteout dentry (stop pathwalk) */
#define DCACHE_DIRECTORY_TYPE (2 << 20) /* Normal directory */ #define DCACHE_DIRECTORY_TYPE (2 << 20) /* Normal directory */
#define DCACHE_AUTODIR_TYPE (3 << 20) /* Lookupless directory (presumed automount) */ #define DCACHE_AUTODIR_TYPE (3 << 20) /* Lookupless directory (presumed automount) */
#define DCACHE_REGULAR_TYPE (4 << 20) /* Regular file type (or fallthru to such) */ #define DCACHE_REGULAR_TYPE (4 << 20) /* Regular file type */
#define DCACHE_SPECIAL_TYPE (5 << 20) /* Other file type (or fallthru to such) */ #define DCACHE_SPECIAL_TYPE (5 << 20) /* Other file type */
#define DCACHE_SYMLINK_TYPE (6 << 20) /* Symlink (or fallthru to such) */ #define DCACHE_SYMLINK_TYPE (6 << 20) /* Symlink */
#define DCACHE_MAY_FREE BIT(23) #define DCACHE_MAY_FREE BIT(23)
#define DCACHE_FALLTHRU BIT(24) /* Fall through to lower layer */
#define DCACHE_NOKEY_NAME BIT(25) /* Encrypted name encoded without key */ #define DCACHE_NOKEY_NAME BIT(25) /* Encrypted name encoded without key */
#define DCACHE_OP_REAL BIT(26) #define DCACHE_OP_REAL BIT(26)
@ -489,14 +488,6 @@ static inline int simple_positive(const struct dentry *dentry)
return d_really_is_positive(dentry) && !d_unhashed(dentry); return d_really_is_positive(dentry) && !d_unhashed(dentry);
} }
extern void d_set_fallthru(struct dentry *dentry);
static inline bool d_is_fallthru(const struct dentry *dentry)
{
return dentry->d_flags & DCACHE_FALLTHRU;
}
extern int sysctl_vfs_cache_pressure; extern int sysctl_vfs_cache_pressure;
static inline unsigned long vfs_pressure_ratio(unsigned long val) static inline unsigned long vfs_pressure_ratio(unsigned long val)