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| author | H. Peter Anvin <hpa@linux.intel.com> | 2011-08-05 03:13:20 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2011-08-05 03:13:20 +0400 |
| commit | 17b0436077d99211d8b26886235a36c5ec54ac57 (patch) | |
| tree | 8bcd9b4a0f8285f749814e95ae0365c611ba2392 /fs/xfs/xfs_log.c | |
| parent | aafade242ff24fac3aabf61c7861dfa44a3c2445 (diff) | |
| parent | 02f8c6aee8df3cdc935e9bdd4f2d020306035dbe (diff) | |
| download | linux-17b0436077d99211d8b26886235a36c5ec54ac57.tar.xz | |
Merge commit 'v3.0' into x86/vdso
Diffstat (limited to 'fs/xfs/xfs_log.c')
| -rw-r--r-- | fs/xfs/xfs_log.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 211930246f20..41d5b8f2bf92 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -1372,8 +1372,17 @@ xlog_sync(xlog_t *log, XFS_BUF_ASYNC(bp); bp->b_flags |= XBF_LOG_BUFFER; - if (log->l_mp->m_flags & XFS_MOUNT_BARRIER) + if (log->l_mp->m_flags & XFS_MOUNT_BARRIER) { + /* + * If we have an external log device, flush the data device + * before flushing the log to make sure all meta data + * written back from the AIL actually made it to disk + * before writing out the new log tail LSN in the log buffer. + */ + if (log->l_mp->m_logdev_targp != log->l_mp->m_ddev_targp) + xfs_blkdev_issue_flush(log->l_mp->m_ddev_targp); XFS_BUF_ORDERED(bp); + } ASSERT(XFS_BUF_ADDR(bp) <= log->l_logBBsize-1); ASSERT(XFS_BUF_ADDR(bp) + BTOBB(count) <= log->l_logBBsize); |