samsung_sm8750/android_kernel_samsung_sm8750
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Add samsung specific changes

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This commit is contained in:
Sascha Nesterovic
2025-08-11 14:29:00 +02:00
parent c66122e619
commit 4d134a1294
2688 changed files with 1127995 additions and 11475 deletions
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79
fs/namespace.c
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@@ -37,16 +37,11 @@
#include "internal.h"
#include <trace/hooks/blk.h>
#ifdef CONFIG_PROC_STLOG
#include <linux/fslog.h>
#endif
#include <trace/hooks/fs.h>
/* Maximum number of mounts in a mount namespace */
static unsigned int sysctl_mount_max __read_mostly = 100000;
static unsigned int sys_umount_trace_status;
static unsigned int m_hash_mask __read_mostly;
static unsigned int m_hash_shift __read_mostly;
static unsigned int mp_hash_mask __read_mostly;
@@ -125,68 +120,6 @@ static inline struct hlist_head *m_hash(struct vfsmount *mnt, struct dentry *den
return &mount_hashtable[tmp & m_hash_mask];
}
enum {
UMOUNT_STATUS_ADD_TASK = 0,
UMOUNT_STATUS_REMAIN_NS,
UMOUNT_STATUS_REMAIN_MNT_COUNT,
UMOUNT_STATUS_ADD_DELAYED_WORK,
UMOUNT_STATUS_MAX
};
static inline void sys_umount_trace_set_status(unsigned int status)
{
sys_umount_trace_status = status;
}
#ifdef CONFIG_PROC_STLOG
static const char *umount_exit_str[UMOUNT_STATUS_MAX] = {
"ADDED_TASK", "REMAIN_NS", "REMAIN_CNT", "DELAY_TASK"
};
static const char *exception_process[] = {
"main", "ch_zygote", "usap32", "usap64", NULL,
};
static inline int is_exception(char *comm)
{
unsigned int idx = 0;
do {
if (!strcmp(comm, exception_process[idx]))
return 1;
} while (exception_process[++idx]);
return 0;
}
static inline void sys_umount_trace_print(struct mount *mnt, int flags)
{
struct super_block *sb = mnt->mnt.mnt_sb;
int mnt_flags = mnt->mnt.mnt_flags;
#ifndef NTFS3_SUPER_MAGIC
#define NTFS3_SUPER_MAGIC (0x7366746EUL)
#endif /* NTFS3_SUPER_MAGIC */
/* We don`t want to see what zygote`s umount */
if (((sb->s_magic == MSDOS_SUPER_MAGIC) ||
(sb->s_magic == EXFAT_SUPER_MAGIC) ||
(sb->s_magic == NTFS3_SUPER_MAGIC)) &&
((current_uid().val == 0) && !is_exception(current->comm))) {
struct block_device *bdev = sb->s_bdev;
dev_t bd_dev = bdev ? bdev->bd_dev : 0;
ST_LOG("[SYS](%s[%d:%d]): umount(mf:0x%x, f:0x%x, %s)\n",
sb->s_id, MAJOR(bd_dev), MINOR(bd_dev), mnt_flags,
flags, umount_exit_str[sys_umount_trace_status]);
}
}
#else
static inline void sys_umount_trace_print(__always_unused struct mount *mnt,
__always_unused int flags)
{
}
#endif
static inline struct hlist_head *mp_hash(struct dentry *dentry)
{
unsigned long tmp = ((unsigned long)dentry / L1_CACHE_BYTES);
@@ -1360,7 +1293,6 @@ static void mntput_no_expire(struct mount *mnt)
*/
mnt_add_count(mnt, -1);
rcu_read_unlock();
sys_umount_trace_set_status(UMOUNT_STATUS_REMAIN_NS);
return;
}
lock_mount_hash();
@@ -1375,7 +1307,6 @@ static void mntput_no_expire(struct mount *mnt)
WARN_ON(count < 0);
rcu_read_unlock();
unlock_mount_hash();
sys_umount_trace_set_status(UMOUNT_STATUS_REMAIN_MNT_COUNT);
return;
}
if (unlikely(mnt->mnt.mnt_flags & MNT_DOOMED)) {
@@ -1402,15 +1333,11 @@ static void mntput_no_expire(struct mount *mnt)
struct task_struct *task = current;
if (likely(!(task->flags & PF_KTHREAD))) {
init_task_work(&mnt->mnt_rcu, __cleanup_mnt);
if (!task_work_add(task, &mnt->mnt_rcu, TWA_RESUME)) {
sys_umount_trace_set_status(UMOUNT_STATUS_ADD_TASK);
if (!task_work_add(task, &mnt->mnt_rcu, TWA_RESUME))
return;
}
}
if (llist_add(&mnt->mnt_llist, &delayed_mntput_list)) {
if (llist_add(&mnt->mnt_llist, &delayed_mntput_list))
schedule_delayed_work(&delayed_mntput_work, 1);
sys_umount_trace_set_status(UMOUNT_STATUS_ADD_DELAYED_WORK);
}
return;
}
cleanup_mnt(mnt);
@@ -1972,8 +1899,6 @@ int path_umount(struct path *path, int flags)
/* we mustn't call path_put() as that would clear mnt_expiry_mark */
dput(path->dentry);
mntput_no_expire(mnt);
if (!ret)
sys_umount_trace_print(mnt, flags);
return ret;
}