From 2d39081291470750cc605c917531d7cd85aebf94 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Sun, 22 Oct 2023 11:19:34 -0400 Subject: [PATCH] bcachefs: Ensure we don't exceed encoded_extent_max The write path may (rarely) see an encoded (checksummed) extent that exceeds encoded_extent_max - this can happen when we're moving an existing extent that was not checksummed, but was given a checksum by bch2_write_rechecksum(). Signed-off-by: Kent Overstreet --- fs/bcachefs/io_write.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/bcachefs/io_write.c b/fs/bcachefs/io_write.c index 6e4f85eb6ec8d..4a666f4d2dcc2 100644 --- a/fs/bcachefs/io_write.c +++ b/fs/bcachefs/io_write.c @@ -816,6 +816,7 @@ static enum prep_encoded_ret { /* Can we just write the entire extent as is? */ if (op->crc.uncompressed_size == op->crc.live_size && + op->crc.uncompressed_size <= c->opts.encoded_extent_max >> 9 && op->crc.compressed_size <= wp->sectors_free && (op->crc.compression_type == bch2_compression_opt_to_type(op->compression_opt) || op->incompressible)) { -- 2.30.2