diff options
| -rw-r--r-- | fs/file_table.c | 2 | ||||
| -rw-r--r-- | fs/open.c | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/fs/file_table.c b/fs/file_table.c index 5424e3a8df5f..0658b822beeb 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -235,6 +235,8 @@ static struct file *alloc_file(const struct path *path, int flags, file->f_mapping = path->dentry->d_inode->i_mapping; file->f_wb_err = filemap_sample_wb_err(file->f_mapping); file->f_sb_err = file_sample_sb_err(file); + if (fop->llseek && fop->llseek != no_llseek) + file->f_mode |= FMODE_LSEEK; if ((file->f_mode & FMODE_READ) && likely(fop->read || fop->read_iter)) file->f_mode |= FMODE_CAN_READ; diff --git a/fs/open.c b/fs/open.c index 1d57fbde2feb..4488bd77c390 100644 --- a/fs/open.c +++ b/fs/open.c @@ -858,6 +858,10 @@ static int do_dentry_open(struct file *f, if ((f->f_mode & FMODE_WRITE) && likely(f->f_op->write || f->f_op->write_iter)) f->f_mode |= FMODE_CAN_WRITE; + if ((f->f_mode & FMODE_LSEEK) && !f->f_op->llseek) + f->f_mode &= ~FMODE_LSEEK; + if ((f->f_mode & FMODE_LSEEK) && f->f_op->llseek == no_llseek) + f->f_mode &= ~FMODE_LSEEK; if (f->f_mapping->a_ops && f->f_mapping->a_ops->direct_IO) f->f_mode |= FMODE_CAN_ODIRECT; |