From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/include/linux/dcache.h | 37 +++++++++++++++++++++----------------
1 files changed, 21 insertions(+), 16 deletions(-)
diff --git a/kernel/include/linux/dcache.h b/kernel/include/linux/dcache.h
index 668d880..8836cf7 100644
--- a/kernel/include/linux/dcache.h
+++ b/kernel/include/linux/dcache.h
@@ -63,9 +63,10 @@
struct dentry_stat_t {
long nr_dentry;
long nr_unused;
- long age_limit; /* age in seconds */
- long want_pages; /* pages requested by system */
- long dummy[2];
+ long age_limit; /* age in seconds */
+ long want_pages; /* pages requested by system */
+ long nr_negative; /* # of unused negative dentries */
+ long dummy; /* Reserved for future use */
};
extern struct dentry_stat_t dentry_stat;
@@ -89,7 +90,7 @@
struct dentry {
/* RCU lookup touched fields */
unsigned int d_flags; /* protected by d_lock */
- seqcount_t d_seq; /* per dentry seqlock */
+ seqcount_spinlock_t d_seq; /* per dentry seqlock */
struct hlist_bl_node d_hash; /* lookup hash list */
struct dentry *d_parent; /* parent directory */
struct qstr d_name;
@@ -106,7 +107,7 @@
union {
struct list_head d_lru; /* LRU list */
- struct swait_queue_head *d_wait; /* in-lookup ones only */
+ wait_queue_head_t *d_wait; /* in-lookup ones only */
};
struct list_head d_child; /* child of parent list */
struct list_head d_subdirs; /* our children */
@@ -150,9 +151,8 @@
struct vfsmount *(*d_automount)(struct path *);
int (*d_manage)(const struct path *, bool);
struct dentry *(*d_real)(struct dentry *, const struct inode *);
-
- ANDROID_KABI_USE(1, void (*d_canonical_path)(const struct path *,
- struct path *));
+ void (*d_canonical_path)(const struct path *, struct path *);
+ ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
ANDROID_KABI_RESERVE(3);
ANDROID_KABI_RESERVE(4);
@@ -160,9 +160,9 @@
/*
* Locking rules for dentry_operations callbacks are to be found in
- * Documentation/filesystems/Locking. Keep it updated!
+ * Documentation/filesystems/locking.rst. Keep it updated!
*
- * FUrther descriptions are found in Documentation/filesystems/vfs.txt.
+ * FUrther descriptions are found in Documentation/filesystems/vfs.rst.
* Keep it updated too!
*/
@@ -185,6 +185,8 @@
* typically using d_splice_alias. */
#define DCACHE_REFERENCED 0x00000040 /* Recently used, don't discard. */
+
+#define DCACHE_DONTCACHE 0x00000080 /* Purge from memory on final dput() */
#define DCACHE_CANT_MOUNT 0x00000100
#define DCACHE_GENOCIDE 0x00000200
@@ -220,7 +222,7 @@
#define DCACHE_MAY_FREE 0x00800000
#define DCACHE_FALLTHRU 0x01000000 /* Fall through to lower layer */
-#define DCACHE_ENCRYPTED_NAME 0x02000000 /* Encrypted name (dir key was unavailable) */
+#define DCACHE_NOKEY_NAME 0x02000000 /* Encrypted name encoded without key */
#define DCACHE_OP_REAL 0x04000000
#define DCACHE_PAR_LOOKUP 0x10000000 /* being looked up (with parent locked shared) */
@@ -244,9 +246,8 @@
/* allocate/de-allocate */
extern struct dentry * d_alloc(struct dentry *, const struct qstr *);
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 *,
- struct swait_queue_head *);
+ wait_queue_head_t *);
extern struct dentry * d_splice_alias(struct inode *, struct dentry *);
extern struct dentry * d_add_ci(struct dentry *, struct inode *, struct qstr *);
extern struct dentry * d_exact_alias(struct dentry *, struct inode *);
@@ -301,7 +302,6 @@
*/
extern __printf(4, 5)
char *dynamic_dname(struct dentry *, char *, int, const char *, ...);
-extern char *simple_dname(struct dentry *, char *, int);
extern char *__d_path(const struct path *, const struct path *, char *, int);
extern char *d_absolute_path(const struct path *, char *, int);
@@ -451,6 +451,11 @@
return d_is_miss(dentry);
}
+static inline bool d_flags_negative(unsigned flags)
+{
+ return (flags & DCACHE_ENTRY_TYPE) == DCACHE_MISS_TYPE;
+}
+
static inline bool d_is_positive(const struct dentry *dentry)
{
return !d_is_negative(dentry);
@@ -578,7 +583,7 @@
* If dentry is on a union/overlay, then return the underlying, real dentry.
* Otherwise return the dentry itself.
*
- * See also: Documentation/filesystems/vfs.txt
+ * See also: Documentation/filesystems/vfs.rst
*/
static inline struct dentry *d_real(struct dentry *dentry,
const struct inode *inode)
@@ -603,7 +608,7 @@
}
struct name_snapshot {
- const unsigned char *name;
+ struct qstr name;
unsigned char inline_name[DNAME_INLINE_LEN];
};
void take_dentry_name_snapshot(struct name_snapshot *, struct dentry *);
--
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