[PATCH] fix rescan_partitions to return errors properly

The only error code which comes from the partition checkers is -1, when
they finds an EIO.  As per the discussion, ENOMEM values were ignored,
as they might scare the users.

So, with the current code, we end up returning -1 and not EIO for the
ioctl() calls.  Which doesn't give any clue to the user of what went
wrong.

Signed-off-by: Suzuki K P <suzuki@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index e46d237..8a7d003 100644 (file)
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -541,7 +541,7 @@ int rescan_partitions(struct gendisk *disk, struct block_device *bdev)
        if (!get_capacity(disk) || !(state = check_partition(disk, bdev)))
                return 0;
        if (IS_ERR(state))      /* I/O error reading the partition table */
-               return PTR_ERR(state);
+               return -EIO;
        for (p = 1; p < state->limit; p++) {
                sector_t size = state->parts[p].size;
                sector_t from = state->parts[p].from;