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Commit 79b510c0 authored by Artem Bityutskiy's avatar Artem Bityutskiy
Browse files

UBI: add few more comments 



Add few comments above ubi_scan_add_used() to explain why it is so
complex. Requested by Satyam Sharma <satyam.sharma@gmail.com>.

Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
parent 941dfb07

drivers/mtd/ubi/scan.c

+6 −2
Original line number Diff line number Diff line
@@ -407,8 +407,12 @@ static int compare_lebs(const struct ubi_device *ubi, 
 * @vid_hdr: the volume identifier header

 * @bitflips: if bit-flips were detected when this physical eraseblock was read

 *

 * This function returns zero in case of success and a negative error code in

 * case of failure.

 * This function adds information about a used physical eraseblock to the

 * 'used' tree of the corresponding volume. The function is rather complex

 * because it has to handle cases when this is not the first physical

 * eraseblock belonging to the same logical eraseblock, and the newer one has

 * to be picked, while the older one has to be dropped. This function returns

 * zero in case of success and a negative error code in case of failure.

 */

int ubi_scan_add_used(const struct ubi_device *ubi, struct ubi_scan_info *si,

		      int pnum, int ec, const struct ubi_vid_hdr *vid_hdr,