jlaitine commented on code in PR #8000:
URL: https://github.com/apache/nuttx/pull/8000#discussion_r1059958464
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include/nuttx/fs/fs.h:
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@@ -298,6 +305,11 @@ struct mountpt_operations
size_t buflen);
off_t (*seek)(FAR struct file *filep, off_t offset, int whence);
int (*ioctl)(FAR struct file *filep, int cmd, unsigned long arg);
+ int (*truncate)(FAR struct file *filep, off_t length);
+ int (*mmap)(FAR struct file *filep, FAR struct mm_map_entry_s *map);
+ int (*munmap)(FAR struct task_group_s *group,
+ FAR struct mm_map_entry_s *map, void *start,
+ size_t length);
Review Comment:
yes, you do. "map" is the existing mapping, start and length indicate the
area which user wants to unmap. These are not necessarily the same; driver may
support also unmapping a part of the previously mapped area.
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