X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fraid%2Fbitmap.h;h=6db9a4c153556a7236caf4dbf376b27900af3f15;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=899437802aeafb75b2c2e4ea8cb80eb593fb5397;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/include/linux/raid/bitmap.h b/include/linux/raid/bitmap.h
index 899437802..6db9a4c15 100644
--- a/include/linux/raid/bitmap.h
+++ b/include/linux/raid/bitmap.h
@@ -140,21 +140,22 @@ typedef __u16 bitmap_counter_t;
 enum bitmap_state {
 	BITMAP_ACTIVE = 0x001, /* the bitmap is in use */
 	BITMAP_STALE  = 0x002,  /* the bitmap file is out of date or had -EIO */
+	BITMAP_WRITE_ERROR = 0x004, /* A write error has occurred */
 	BITMAP_HOSTENDIAN = 0x8000,
 };
 
 /* the superblock at the front of the bitmap file -- little endian */
 typedef struct bitmap_super_s {
-	__u32 magic;        /*  0  BITMAP_MAGIC */
-	__u32 version;      /*  4  the bitmap major for now, could change... */
-	__u8  uuid[16];     /*  8  128 bit uuid - must match md device uuid */
-	__u64 events;       /* 24  event counter for the bitmap (1)*/
-	__u64 events_cleared;/*32  event counter when last bit cleared (2) */
-	__u64 sync_size;    /* 40  the size of the md device's sync range(3) */
-	__u32 state;        /* 48  bitmap state information */
-	__u32 chunksize;    /* 52  the bitmap chunk size in bytes */
-	__u32 daemon_sleep; /* 56  seconds between disk flushes */
-	__u32 write_behind; /* 60  number of outstanding write-behind writes */
+	__le32 magic;        /*  0  BITMAP_MAGIC */
+	__le32 version;      /*  4  the bitmap major for now, could change... */
+	__u8  uuid[16];      /*  8  128 bit uuid - must match md device uuid */
+	__le64 events;       /* 24  event counter for the bitmap (1)*/
+	__le64 events_cleared;/*32  event counter when last bit cleared (2) */
+	__le64 sync_size;    /* 40  the size of the md device's sync range(3) */
+	__le32 state;        /* 48  bitmap state information */
+	__le32 chunksize;    /* 52  the bitmap chunk size in bytes */
+	__le32 daemon_sleep; /* 56  seconds between disk flushes */
+	__le32 write_behind; /* 60  number of outstanding write-behind writes */
 
 	__u8  pad[256 - 64]; /* set to zero */
 } bitmap_super_t;
@@ -244,15 +245,10 @@ struct bitmap {
 	unsigned long daemon_lastrun; /* jiffies of last run */
 	unsigned long daemon_sleep; /* how many seconds between updates? */
 
-	/*
-	 * bitmap_writeback_daemon waits for file-pages that have been written,
-	 * as there is no way to get a call-back when a page write completes.
-	 */
-	mdk_thread_t *writeback_daemon;
-	spinlock_t write_lock;
+	atomic_t pending_writes; /* pending writes to the bitmap file */
 	wait_queue_head_t write_wait;
-	struct list_head complete_pages;
-	mempool_t *write_pool;
+	wait_queue_head_t overflow_wait;
+
 };
 
 /* the bitmap API */
@@ -270,6 +266,8 @@ int bitmap_update_sb(struct bitmap *bitmap);
 int  bitmap_setallbits(struct bitmap *bitmap);
 void bitmap_write_all(struct bitmap *bitmap);
 
+void bitmap_dirty_bits(struct bitmap *bitmap, unsigned long s, unsigned long e);
+
 /* these are exported */
 int bitmap_startwrite(struct bitmap *bitmap, sector_t offset,
 			unsigned long sectors, int behind);