[Patch 05/18] fs/logfs/logfs.h
Jan Engelhardt
jengelh at linux01.gwdg.de
Mon Jun 4 04:17:47 EDT 2007
>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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