src/sys/kern/vfs_syscalls.c - diff

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version 1.554, 2021/11/07 13:47:50

version 1.555, 2022/02/12 15:51:29

Line 168 const u_int nmountcompatnames = __arrayc

* Filter event method for EVFILT_FS.

static struct klist fs_klist = SLIST_HEAD_INITIALIZER(&fs_klist);

static struct klist fs_klist;

kmutex_t fs_klist_lock;

static kmutex_t fs_klist_lock;

CTASSERT((NOTE_SUBMIT & VQ_MOUNT) == 0);

CTASSERT((NOTE_SUBMIT & VQ_UNMOUNT) == 0);

void

vfs_evfilt_fs_init(void)

{

klist_init(&fs_klist);

mutex_init(&fs_klist_lock, MUTEX_DEFAULT, IPL_NONE);

}

static int

filt_fsattach(struct knote *kn)

{

mutex_enter(&fs_klist_lock);

kn->kn_flags |= EV_CLEAR;

SLIST_INSERT_HEAD(&fs_klist, kn, kn_selnext);

klist_insert(&fs_klist, kn);

mutex_exit(&fs_klist_lock);

return 0;

Line 189 static void

Line 196 static void

filt_fsdetach(struct knote *kn)

{

mutex_enter(&fs_klist_lock);

SLIST_REMOVE(&fs_klist, kn, knote, kn_selnext);

klist_remove(&fs_klist, kn);

mutex_exit(&fs_klist_lock);

}