diff options
Diffstat (limited to 'fs/btrfs/check-integrity.c')
| -rw-r--r-- | fs/btrfs/check-integrity.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index f85b1c409003..131d82800b3a 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -77,6 +77,15 @@ * the integrity of (super)-block write requests, do not * enable the config option BTRFS_FS_CHECK_INTEGRITY to * include and compile the integrity check tool. + * + * Expect millions of lines of information in the kernel log with an + * enabled check_int_print_mask. Therefore set LOG_BUF_SHIFT in the + * kernel config to at least 26 (which is 64MB). Usually the value is + * limited to 21 (which is 2MB) in init/Kconfig. The file needs to be + * changed like this before LOG_BUF_SHIFT can be set to a high value: + * config LOG_BUF_SHIFT + * int "Kernel log buffer size (16 => 64KB, 17 => 128KB)" + * range 12 30 */ #include <linux/sched.h> @@ -124,6 +133,7 @@ #define BTRFSIC_PRINT_MASK_INITIAL_DATABASE 0x00000400 #define BTRFSIC_PRINT_MASK_NUM_COPIES 0x00000800 #define BTRFSIC_PRINT_MASK_TREE_WITH_ALL_MIRRORS 0x00001000 +#define BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH_VERBOSE 0x00002000 struct btrfsic_dev_state; struct btrfsic_state; @@ -2999,6 +3009,7 @@ static void __btrfsic_submit_bio(int rw, struct bio *bio) (rw & WRITE) && NULL != bio->bi_io_vec) { unsigned int i; u64 dev_bytenr; + u64 cur_bytenr; int bio_is_patched; char **mapped_datav; @@ -3017,6 +3028,7 @@ static void __btrfsic_submit_bio(int rw, struct bio *bio) GFP_NOFS); if (!mapped_datav) goto leave; + cur_bytenr = dev_bytenr; for (i = 0; i < bio->bi_vcnt; i++) { BUG_ON(bio->bi_io_vec[i].bv_len != PAGE_CACHE_SIZE); mapped_datav[i] = kmap(bio->bi_io_vec[i].bv_page); @@ -3028,16 +3040,13 @@ static void __btrfsic_submit_bio(int rw, struct bio *bio) kfree(mapped_datav); goto leave; } - if ((BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH | - BTRFSIC_PRINT_MASK_VERBOSE) == - (dev_state->state->print_mask & - (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH | - BTRFSIC_PRINT_MASK_VERBOSE))) + if (dev_state->state->print_mask & + BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH_VERBOSE) printk(KERN_INFO - "#%u: page=%p, len=%u, offset=%u\n", - i, bio->bi_io_vec[i].bv_page, - bio->bi_io_vec[i].bv_len, + "#%u: bytenr=%llu, len=%u, offset=%u\n", + i, cur_bytenr, bio->bi_io_vec[i].bv_len, bio->bi_io_vec[i].bv_offset); + cur_bytenr += bio->bi_io_vec[i].bv_len; } btrfsic_process_written_block(dev_state, dev_bytenr, mapped_datav, bio->bi_vcnt, |