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give readdir(2)/getdents(2)/etc. uniform exclusion with lseek()

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same as read() on regular files has, and for the same reason.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2016-04-20 17:08:21 -04:00
parent 9902af79c0
commit 63b6df1413
7 changed files with 33 additions and 27 deletions
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fs/read_write.c
-12
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@@ -302,18 +302,6 @@ loff_t vfs_llseek(struct file *file, loff_t offset, int whence)
}
EXPORT_SYMBOL(vfs_llseek);
static inline struct fd fdget_pos(int fd)
{
return __to_fd(__fdget_pos(fd));
}
static inline void fdput_pos(struct fd f)
{
if (f.flags & FDPUT_POS_UNLOCK)
mutex_unlock(&f.file->f_pos_lock);
fdput(f);
}
SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, whence)
{
off_t retval;