c - Whats meaning of "EXPORT_SYMBOL" in Linux kernel code? - Stack Overflow

from here 48 struct snd_card *snd_cards[SNDRV_CARDS]; 49 EXPORT_SYMBOL(snd_cards); i am not getting whats the meaning of it and why that is used. ... Anyone know under what version of the kernel /include/linux/export.h was added?(Or an easy way to ...

stackoverflow.com