From 4e3299eaddffd9d7d5b8bae28ad700bb775f02d0 Mon Sep 17 00:00:00 2001 From: "Jason A. Donenfeld" Date: Wed, 29 Jun 2022 15:06:59 +0200 Subject: fs: do not compare against ->llseek Now vfs_llseek() can simply check for FMODE_LSEEK; if it's set, we know that ->llseek() won't be NULL and if it's not we should just fail with -ESPIPE. A couple of other places where we used to check for special values of ->llseek() (somewhat inconsistently) switched to checking FMODE_LSEEK. Signed-off-by: Jason A. Donenfeld Signed-off-by: Al Viro --- fs/read_write.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'fs/read_write.c') diff --git a/fs/read_write.c b/fs/read_write.c index b1b1cdfee9d3..d94b6dbba6f9 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -290,14 +290,9 @@ EXPORT_SYMBOL(default_llseek); loff_t vfs_llseek(struct file *file, loff_t offset, int whence) { - loff_t (*fn)(struct file *, loff_t, int); - - fn = no_llseek; - if (file->f_mode & FMODE_LSEEK) { - if (file->f_op->llseek) - fn = file->f_op->llseek; - } - return fn(file, offset, whence); + if (!(file->f_mode & FMODE_LSEEK)) + return -ESPIPE; + return file->f_op->llseek(file, offset, whence); } EXPORT_SYMBOL(vfs_llseek); -- cgit