static errcode_t test_discard(io_channel channel, unsigned long long block,
unsigned long long count)
{
struct test_private_data *data;
errcode_t retval = 0;
EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
data = (struct test_private_data *) channel->private_data;
EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
if (data->real)
retval = io_channel_discard(data->real, block, count);
if (data->flags & TEST_FLAG_DISCARD)
fprintf(data->outfile,
"Test_io: discard(%llu, %llu) returned %s\n",
block, count, retval ? error_message(retval) : "OK");
return retval;
}
static void e2fsck_discard_blocks(e2fsck_t ctx, blk64_t start,
blk64_t count)
{
ext2_filsys fs = ctx->fs;
/*
* If the filesystem has changed it means that there was an corruption
* which should be repaired, but in some cases just one e2fsck run is
* not enough to fix the problem, hence it is not safe to run discard
* in this case.
*/
if (ext2fs_test_changed(fs))
ctx->options &= ~E2F_OPT_DISCARD;
if ((ctx->options & E2F_OPT_DISCARD) &&
(io_channel_discard(fs->io, start, count)))
ctx->options &= ~E2F_OPT_DISCARD;
}
