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fuse: export fuse_dequeue_forget() function

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File systems like virtio-fs need to do not have to play directly with
forget list data structures. There is a helper function use that instead.

Rename dequeue_forget() to fuse_dequeue_forget() and export it so that
stacked filesystems can use it.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Vivek Goyal 2019-06-05 15:50:43 -04:00 committed by Miklos Szeredi
parent 79d96efffd
commit 4388c5aac4
2 changed files with 11 additions and 6 deletions
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13
fs/fuse/dev.c
View File

@ -1033,9 +1033,9 @@ __releases(fiq->lock)
return err ? err : reqsize;
}
static struct fuse_forget_link *dequeue_forget(struct fuse_iqueue *fiq,
unsigned max,
unsigned *countp)
struct fuse_forget_link *fuse_dequeue_forget(struct fuse_iqueue *fiq,
unsigned int max,
unsigned int *countp)
{
struct fuse_forget_link *head = fiq->forget_list_head.next;
struct fuse_forget_link **newhead = &head;
@ -1054,6 +1054,7 @@ static struct fuse_forget_link *dequeue_forget(struct fuse_iqueue *fiq,
return head;
}
EXPORT_SYMBOL(fuse_dequeue_forget);
static int fuse_read_single_forget(struct fuse_iqueue *fiq,
struct fuse_copy_state *cs,
@ -1061,7 +1062,7 @@ static int fuse_read_single_forget(struct fuse_iqueue *fiq,
__releases(fiq->lock)
{
int err;
struct fuse_forget_link *forget = dequeue_forget(fiq, 1, NULL);
struct fuse_forget_link *forget = fuse_dequeue_forget(fiq, 1, NULL);
struct fuse_forget_in arg = {
.nlookup = forget->forget_one.nlookup,
};
@ -1109,7 +1110,7 @@ __releases(fiq->lock)
}
max_forgets = (nbytes - ih.len) / sizeof(struct fuse_forget_one);
head = dequeue_forget(fiq, max_forgets, &count);
head = fuse_dequeue_forget(fiq, max_forgets, &count);
spin_unlock(&fiq->lock);
arg.count = count;
@ -2119,7 +2120,7 @@ void fuse_abort_conn(struct fuse_conn *fc)
clear_bit(FR_PENDING, &req->flags);
list_splice_tail_init(&fiq->pending, &to_end);
while (forget_pending(fiq))
kfree(dequeue_forget(fiq, 1, NULL));
kfree(fuse_dequeue_forget(fiq, 1, NULL));
wake_up_all(&fiq->waitq);
spin_unlock(&fiq->lock);
kill_fasync(&fiq->fasync, SIGIO, POLL_IN);

4
fs/fuse/fuse_i.h
View File

@ -729,6 +729,10 @@ void fuse_queue_forget(struct fuse_conn *fc, struct fuse_forget_link *forget,
struct fuse_forget_link *fuse_alloc_forget(void);
struct fuse_forget_link *fuse_dequeue_forget(struct fuse_iqueue *fiq,
unsigned int max,
unsigned int *countp);
/*
* Initialize READ or READDIR request
*/