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switch simple cases of fget_light to fdget

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-08-28 12:52:22 -04:00
父節點 a5b470ba06
當前提交 2903ff019b
共有 44 個文件被更改，包括 631 次插入 和 761 次删除
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28
fs/select.c
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@@ -428,8 +428,6 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time)
for (i = 0; i < n; ++rinp, ++routp, ++rexp) {
unsigned long in, out, ex, all_bits, bit = 1, mask, j;
unsigned long res_in = 0, res_out = 0, res_ex = 0;
const struct file_operations *f_op = NULL;
struct file *file = NULL;
in = *inp++; out = *outp++; ex = *exp++;
all_bits = in | out | ex;
@@ -439,20 +437,21 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time)
}
for (j = 0; j < BITS_PER_LONG; ++j, ++i, bit <<= 1) {
int fput_needed;
struct fd f;
if (i >= n)
break;
if (!(bit & all_bits))
continue;
file = fget_light(i, &fput_needed);
if (file) {
f_op = file->f_op;
f = fdget(i);
if (f.file) {
const struct file_operations *f_op;
f_op = f.file->f_op;
mask = DEFAULT_POLLMASK;
if (f_op && f_op->poll) {
wait_key_set(wait, in, out, bit);
mask = (*f_op->poll)(file, wait);
mask = (*f_op->poll)(f.file, wait);
}
fput_light(file, fput_needed);
fdput(f);
if ((mask & POLLIN_SET) && (in & bit)) {
res_in |= bit;
retval++;
@@ -725,20 +724,17 @@ static inline unsigned int do_pollfd(struct pollfd *pollfd, poll_table *pwait)
mask = 0;
fd = pollfd->fd;
if (fd >= 0) {
int fput_needed;
struct file * file;
file = fget_light(fd, &fput_needed);
struct fd f = fdget(fd);
mask = POLLNVAL;
if (file != NULL) {
if (f.file) {
mask = DEFAULT_POLLMASK;
if (file->f_op && file->f_op->poll) {
if (f.file->f_op && f.file->f_op->poll) {
pwait->_key = pollfd->events|POLLERR|POLLHUP;
mask = file->f_op->poll(file, pwait);
mask = f.file->f_op->poll(f.file, pwait);
}
/* Mask out unneeded events. */
mask &= pollfd->events | POLLERR | POLLHUP;
fput_light(file, fput_needed);
fdput(f);
}
}
pollfd->revents = mask;