Re: [Patch 05/18] fs/logfs/logfs.h

[Jan Engelhardt <jengelh@linux01.gwdg.de>]

>On Sunday 03 June 2007, Jörn Engel wrote:
>> +/**
>> + * struct logfs_device_ops - device access operations
>> + *
>> + * @read:                      read from the device
>> + * @write:                     write to the device
>> + * @erase:                     erase part of the device
>> + */
>> +struct logfs_device_ops {
>> +       int (*read)(struct super_block *sb, loff_t ofs, size_t len, void *buf);
>> +       int (*write)(struct super_block *sb, loff_t ofs, size_t len, void *buf);
>> +       int (*erase)(struct super_block *sb, loff_t ofs, size_t len);
>> +};
>
>I wonder if there is a way to document the prototypes of these function
>pointers with kerneldoc, other than having a typedef for each.
>
>What brought me to this point is that I first assumed they would return
>the number of bytes transferred, like read/write file operations, where
>your functions return zero on success.

read/write functions returning bytes written would return ssize_t,
just as vfs_read and vfs_write do.



	Jan
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