diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-06-04 12:30:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-06-19 12:34:34 -0700 |
| commit | e78298556ee5d881f6679effb2a6743969ea6e2d (patch) | |
| tree | 207742567635f7acab0a2e4b6a2bf35ef18977d4 /fs/dcache.c | |
| parent | e60cc61153e61e4e38bd983492df9959e82ae4dc (diff) | |
runtime constants: add default dummy infrastructure
This adds the initial dummy support for 'runtime constants' for when
an architecture doesn't actually support an implementation of fixing
up said runtime constants.
This ends up being the fallback to just using the variables as regular
__ro_after_init variables, and changes the dcache d_hash() function to
use this model.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/dcache.c')
| -rw-r--r-- | fs/dcache.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/dcache.c b/fs/dcache.c index 8b4382f5c99d..5d3a5b315692 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -35,6 +35,8 @@ #include "internal.h" #include "mount.h" +#include <asm/runtime-const.h> + /* * Usage: * dcache->d_inode->i_lock protects: @@ -102,7 +104,8 @@ static struct hlist_bl_head *dentry_hashtable __ro_after_init; static inline struct hlist_bl_head *d_hash(unsigned long hashlen) { - return dentry_hashtable + ((u32)hashlen >> d_hash_shift); + return runtime_const_ptr(dentry_hashtable) + + runtime_const_shift_right_32(hashlen, d_hash_shift); } #define IN_LOOKUP_SHIFT 10 @@ -3129,6 +3132,9 @@ static void __init dcache_init_early(void) 0, 0); d_hash_shift = 32 - d_hash_shift; + + runtime_const_init(shift, d_hash_shift); + runtime_const_init(ptr, dentry_hashtable); } static void __init dcache_init(void) @@ -3157,6 +3163,9 @@ static void __init dcache_init(void) 0, 0); d_hash_shift = 32 - d_hash_shift; + + runtime_const_init(shift, d_hash_shift); + runtime_const_init(ptr, dentry_hashtable); } /* SLAB cache for __getname() consumers */ |