diff options
Diffstat (limited to 'fs/xfs/linux-2.6')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_super.c | 14 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_vfs.h | 1 |
2 files changed, 12 insertions, 3 deletions
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index dab5d380237..003e5f29d68 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -659,9 +659,17 @@ xfs_fs_sync_super( int error; int flags; - if (unlikely(sb->s_frozen == SB_FREEZE_WRITE)) - flags = SYNC_QUIESCE; - else + if (unlikely(sb->s_frozen == SB_FREEZE_WRITE)) { + /* + * First stage of freeze - no more writers will make progress + * now we are here, so we flush delwri and delalloc buffers + * here, then wait for all I/O to complete. Data is frozen at + * that point. Metadata is not frozen, transactions can still + * occur here so don't bother flushing the buftarg (i.e + * SYNC_QUIESCE) because it'll just get dirty again. + */ + flags = SYNC_FSDATA | SYNC_DELWRI | SYNC_WAIT | SYNC_DIO_WAIT; + } else flags = SYNC_FSDATA | (wait ? SYNC_WAIT : 0); error = bhv_vfs_sync(vfsp, flags, NULL); diff --git a/fs/xfs/linux-2.6/xfs_vfs.h b/fs/xfs/linux-2.6/xfs_vfs.h index da255bdf526..558823a8306 100644 --- a/fs/xfs/linux-2.6/xfs_vfs.h +++ b/fs/xfs/linux-2.6/xfs_vfs.h @@ -92,6 +92,7 @@ typedef enum { #define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */ #define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */ #define SYNC_QUIESCE 0x0100 /* quiesce fileystem for a snapshot */ +#define SYNC_DIO_WAIT 0x0200 /* wait for direct I/O to complete */ #define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */ #define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */ |