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switch simple cases of fget_light to fdget

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Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2012-08-28 12:52:22 -04:00
commit 2903ff019b
44 changed files with 633 additions and 763 deletions
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15
mm/readahead.c
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@ -579,20 +579,19 @@ do_readahead(struct address_space *mapping, struct file *filp,
SYSCALL_DEFINE(readahead)(int fd, loff_t offset, size_t count)
{
ssize_t ret;
struct file *file;
int fput_needed;
struct fd f;
ret = -EBADF;
file = fget_light(fd, &fput_needed);
if (file) {
if (file->f_mode & FMODE_READ) {
struct address_space *mapping = file->f_mapping;
f = fdget(fd);
if (f.file) {
if (f.file->f_mode & FMODE_READ) {
struct address_space *mapping = f.file->f_mapping;
pgoff_t start = offset >> PAGE_CACHE_SHIFT;
pgoff_t end = (offset + count - 1) >> PAGE_CACHE_SHIFT;
unsigned long len = end - start + 1;
ret = do_readahead(mapping, file, start, len);
ret = do_readahead(mapping, f.file, start, len);
}
fput_light(file, fput_needed);
fdput(f);
}
return ret;
}