diff options
| -rw-r--r-- | Documentation/filesystems/ocfs2.txt | 4 | ||||
| -rw-r--r-- | fs/ocfs2/ocfs2.h | 2 | ||||
| -rw-r--r-- | fs/ocfs2/super.c | 17 |
3 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/filesystems/ocfs2.txt b/Documentation/filesystems/ocfs2.txt index 7618a287aa41..28f8c08201e2 100644 --- a/Documentation/filesystems/ocfs2.txt +++ b/Documentation/filesystems/ocfs2.txt @@ -100,3 +100,7 @@ coherency=full (*) Disallow concurrent O_DIRECT writes, cluster inode coherency=buffered Allow concurrent O_DIRECT writes without EX lock among nodes, which gains high performance at risk of getting stale data on other nodes. +journal_async_commit Commit block can be written to disk without waiting + for descriptor blocks. If enabled older kernels cannot + mount the device. This will enable 'journal_checksum' + internally. diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index 7d6b7d090452..fdbcbfed529e 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -279,6 +279,8 @@ enum ocfs2_mount_options writes */ OCFS2_MOUNT_HB_NONE = 1 << 13, /* No heartbeat */ OCFS2_MOUNT_HB_GLOBAL = 1 << 14, /* Global heartbeat */ + + OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT = 1 << 15, /* Journal Async Commit */ }; #define OCFS2_OSB_SOFT_RO 0x0001 diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index 83723179e1ec..c09d6da23c3d 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -191,6 +191,7 @@ enum { Opt_coherency_full, Opt_resv_level, Opt_dir_resv_level, + Opt_journal_async_commit, Opt_err, }; @@ -222,6 +223,7 @@ static const match_table_t tokens = { {Opt_coherency_full, "coherency=full"}, {Opt_resv_level, "resv_level=%u"}, {Opt_dir_resv_level, "dir_resv_level=%u"}, + {Opt_journal_async_commit, "journal_async_commit"}, {Opt_err, NULL} }; @@ -1500,6 +1502,9 @@ static int ocfs2_parse_options(struct super_block *sb, option < OCFS2_MAX_RESV_LEVEL) mopt->dir_resv_level = option; break; + case Opt_journal_async_commit: + mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT; + break; default: mlog(ML_ERROR, "Unrecognized mount option \"%s\" " @@ -1606,6 +1611,9 @@ static int ocfs2_show_options(struct seq_file *s, struct dentry *root) if (osb->osb_dir_resv_level != osb->osb_resv_level) seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level); + if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT) + seq_printf(s, ",journal_async_commit"); + return 0; } @@ -2475,6 +2483,15 @@ static int ocfs2_check_volume(struct ocfs2_super *osb) goto finally; } + if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT) + jbd2_journal_set_features(osb->journal->j_journal, + JBD2_FEATURE_COMPAT_CHECKSUM, 0, + JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT); + else + jbd2_journal_clear_features(osb->journal->j_journal, + JBD2_FEATURE_COMPAT_CHECKSUM, 0, + JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT); + if (dirty) { /* recover my local alloc if we didn't unmount cleanly. */ status = ocfs2_begin_local_alloc_recovery(osb, |