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authorAl Viro <viro@zeniv.linux.org.uk>2017-11-30 01:00:41 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2017-11-30 01:00:41 +0100
commitc71d227fc4133f949dae620ed5e3a250b43f2415 (patch)
treece12b907996c2acd37e9d86f4ba492b09a0ab0f8 /fs
parenteventpoll: no need to mask the result of epi_item_poll() again (diff)
downloadlinux-c71d227fc4133f949dae620ed5e3a250b43f2415.tar.xz
linux-c71d227fc4133f949dae620ed5e3a250b43f2415.zip
make kernel-side POLL... arch-independent
mangle/demangle on the way to/from userland Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/fcntl.c2
-rw-r--r--fs/fuse/file.c4
-rw-r--r--fs/select.c4
3 files changed, 5 insertions, 5 deletions
diff --git a/fs/fcntl.c b/fs/fcntl.c
index afe731c7a5a8..84bab55b4712 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -758,7 +758,7 @@ static void send_sigio_to_task(struct task_struct *p,
if (reason - POLL_IN >= NSIGPOLL)
si.si_band = ~0L;
else
- si.si_band = (__force long)band_table[reason - POLL_IN];
+ si.si_band = mangle_poll(band_table[reason - POLL_IN]);
si.si_fd = fd;
if (!do_send_sig_info(signum, &si, p, group))
break;
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index fa4ca6bd2c96..e85e974dd211 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2764,7 +2764,7 @@ __poll_t fuse_file_poll(struct file *file, poll_table *wait)
return DEFAULT_POLLMASK;
poll_wait(file, &ff->poll_wait, wait);
- inarg.events = (__u32)poll_requested_events(wait);
+ inarg.events = mangle_poll(poll_requested_events(wait));
/*
* Ask for notification iff there's someone waiting for it.
@@ -2786,7 +2786,7 @@ __poll_t fuse_file_poll(struct file *file, poll_table *wait)
err = fuse_simple_request(fc, &args);
if (!err)
- return outarg.revents;
+ return demangle_poll(outarg.revents);
if (err == -ENOSYS) {
fc->no_poll = 1;
return DEFAULT_POLLMASK;
diff --git a/fs/select.c b/fs/select.c
index b2deeb215dbe..ec14171dd78a 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -817,7 +817,7 @@ static inline __poll_t do_pollfd(struct pollfd *pollfd, poll_table *pwait,
mask = POLLNVAL;
if (f.file) {
/* userland u16 ->events contains POLL... bitmap */
- __poll_t filter = (__force __poll_t)pollfd->events |
+ __poll_t filter = demangle_poll(pollfd->events) |
POLLERR | POLLHUP;
mask = DEFAULT_POLLMASK;
if (f.file->f_op->poll) {
@@ -833,7 +833,7 @@ static inline __poll_t do_pollfd(struct pollfd *pollfd, poll_table *pwait,
}
}
/* ... and so does ->revents */
- pollfd->revents = (__force u16)mask;
+ pollfd->revents = mangle_poll(mask);
return mask;
}