madvise_remove (in Linux) is used to free the backing store associated with pages (punching a hole in a file). This is one of the vfs operations that we do not send over the wire to Samba (so this call would return -ENOSYS locally). Any thoughts on whether this could be done with an obscure SetFileInfo level or FCNTL or whether it is worth adding to the CIFS POSIX Extensions?
A second interesting question is whether to implement fallocate over the wire. sys_fallocate takes a range (and also a flag which indicates whether to extend the size beyond end of file). SET_FILE_ALLOCATION_INFO takes a size field rather than a range. For the case of the range starting at zero, we could simply call Trans2 set pathinfo (or file info) with SET_FILE_ALLOCATION_INFO. Should we add a CIFS POSIX Extension operation for this too? By the way it looks like OCFS2 (not just ext4) implement these. -- Thanks, Steve - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
