diff options
Diffstat (limited to 'fs/reiserfs/journal.c')
| -rw-r--r-- | fs/reiserfs/journal.c | 100 |
1 files changed, 57 insertions, 43 deletions
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index 6c1d0c35f9e9..4cad9e75ef56 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -2649,6 +2649,61 @@ static int journal_init_dev(struct super_block *super, return result; } +/** + * When creating/tuning a file system user can assign some + * journal params within boundaries which depend on the ratio + * blocksize/standard_blocksize. + * + * For blocks >= standard_blocksize transaction size should + * be not less then JOURNAL_TRANS_MIN_DEFAULT, and not more + * then JOURNAL_TRANS_MAX_DEFAULT. + * + * For blocks < standard_blocksize these boundaries should be + * decreased proportionally. + */ +#define REISERFS_STANDARD_BLKSIZE (4096) + +static int check_advise_trans_params(struct super_block *p_s_sb, + struct reiserfs_journal *journal) +{ + if (journal->j_trans_max) { + /* Non-default journal params. + Do sanity check for them. */ + int ratio = 1; + if (p_s_sb->s_blocksize < REISERFS_STANDARD_BLKSIZE) + ratio = REISERFS_STANDARD_BLKSIZE / p_s_sb->s_blocksize; + + if (journal->j_trans_max > JOURNAL_TRANS_MAX_DEFAULT / ratio || + journal->j_trans_max < JOURNAL_TRANS_MIN_DEFAULT / ratio || + SB_ONDISK_JOURNAL_SIZE(p_s_sb) / journal->j_trans_max < + JOURNAL_MIN_RATIO) { + reiserfs_warning(p_s_sb, + "sh-462: bad transaction max size (%u). FSCK?", + journal->j_trans_max); + return 1; + } + if (journal->j_max_batch != (journal->j_trans_max) * + JOURNAL_MAX_BATCH_DEFAULT/JOURNAL_TRANS_MAX_DEFAULT) { + reiserfs_warning(p_s_sb, + "sh-463: bad transaction max batch (%u). FSCK?", + journal->j_max_batch); + return 1; + } + } else { + /* Default journal params. + The file system was created by old version + of mkreiserfs, so some fields contain zeros, + and we need to advise proper values for them */ + if (p_s_sb->s_blocksize != REISERFS_STANDARD_BLKSIZE) + reiserfs_panic(p_s_sb, "sh-464: bad blocksize (%u)", + p_s_sb->s_blocksize); + journal->j_trans_max = JOURNAL_TRANS_MAX_DEFAULT; + journal->j_max_batch = JOURNAL_MAX_BATCH_DEFAULT; + journal->j_max_commit_age = JOURNAL_MAX_COMMIT_AGE; + } + return 0; +} + /* ** must be called once on fs mount. calls journal_read for you */ @@ -2744,49 +2799,8 @@ int journal_init(struct super_block *p_s_sb, const char *j_dev_name, le32_to_cpu(jh->jh_journal.jp_journal_max_commit_age); journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE; - if (journal->j_trans_max) { - /* make sure these parameters are available, assign it if they are not */ - __u32 initial = journal->j_trans_max; - __u32 ratio = 1; - - if (p_s_sb->s_blocksize < 4096) - ratio = 4096 / p_s_sb->s_blocksize; - - if (SB_ONDISK_JOURNAL_SIZE(p_s_sb) / journal->j_trans_max < - JOURNAL_MIN_RATIO) - journal->j_trans_max = - SB_ONDISK_JOURNAL_SIZE(p_s_sb) / JOURNAL_MIN_RATIO; - if (journal->j_trans_max > JOURNAL_TRANS_MAX_DEFAULT / ratio) - journal->j_trans_max = - JOURNAL_TRANS_MAX_DEFAULT / ratio; - if (journal->j_trans_max < JOURNAL_TRANS_MIN_DEFAULT / ratio) - journal->j_trans_max = - JOURNAL_TRANS_MIN_DEFAULT / ratio; - - if (journal->j_trans_max != initial) - reiserfs_warning(p_s_sb, - "sh-461: journal_init: wrong transaction max size (%u). Changed to %u", - initial, journal->j_trans_max); - - journal->j_max_batch = journal->j_trans_max * - JOURNAL_MAX_BATCH_DEFAULT / JOURNAL_TRANS_MAX_DEFAULT; - } - - if (!journal->j_trans_max) { - /*we have the file system was created by old version of mkreiserfs - so this field contains zero value */ - journal->j_trans_max = JOURNAL_TRANS_MAX_DEFAULT; - journal->j_max_batch = JOURNAL_MAX_BATCH_DEFAULT; - journal->j_max_commit_age = JOURNAL_MAX_COMMIT_AGE; - - /* for blocksize >= 4096 - max transaction size is 1024. For block size < 4096 - trans max size is decreased proportionally */ - if (p_s_sb->s_blocksize < 4096) { - journal->j_trans_max /= (4096 / p_s_sb->s_blocksize); - journal->j_max_batch = (journal->j_trans_max) * 9 / 10; - } - } - + if (check_advise_trans_params(p_s_sb, journal) != 0) + goto free_and_return; journal->j_default_max_commit_age = journal->j_max_commit_age; if (commit_max_age != 0) { |