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md: move offset, daemon_sleep and chunksize out of bitmap structure

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... and into bitmap_info.  These are all configuration parameters
that need to be set before the bitmap is created.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown
2009-12-14 12:49:53 +11:00
parent c3d9714e88
commit 42a04b5078
6 changed files with 40 additions and 32 deletions
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51
drivers/md/bitmap.c
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@@ -287,27 +287,28 @@ static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait)
while ((rdev = next_active_rdev(rdev, mddev)) != NULL) {
int size = PAGE_SIZE;
long offset = mddev->bitmap_info.offset;
if (page->index == bitmap->file_pages-1)
size = roundup(bitmap->last_page_size,
bdev_logical_block_size(rdev->bdev));
/* Just make sure we aren't corrupting data or
* metadata
*/
if (bitmap->offset < 0) {
if (offset < 0) {
/* DATA BITMAP METADATA */
if (bitmap->offset
if (offset
+ (long)(page->index * (PAGE_SIZE/512))
+ size/512 > 0)
/* bitmap runs in to metadata */
goto bad_alignment;
if (rdev->data_offset + mddev->dev_sectors
> rdev->sb_start + bitmap->offset)
> rdev->sb_start + offset)
/* data runs in to bitmap */
goto bad_alignment;
} else if (rdev->sb_start < rdev->data_offset) {
/* METADATA BITMAP DATA */
if (rdev->sb_start
+ bitmap->offset
+ offset
+ page->index*(PAGE_SIZE/512) + size/512
> rdev->data_offset)
/* bitmap runs in to data */
@@ -316,7 +317,7 @@ static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait)
/* DATA METADATA BITMAP - no problems */
}
md_super_write(mddev, rdev,
rdev->sb_start + bitmap->offset
rdev->sb_start + offset
+ page->index * (PAGE_SIZE/512),
size,
page);
@@ -550,7 +551,8 @@ static int bitmap_read_sb(struct bitmap *bitmap)
bitmap->sb_page = read_page(bitmap->file, 0, bitmap, bytes);
} else {
bitmap->sb_page = read_sb_page(bitmap->mddev, bitmap->offset,
bitmap->sb_page = read_sb_page(bitmap->mddev,
bitmap->mddev->bitmap_info.offset,
NULL,
0, sizeof(bitmap_super_t));
}
@@ -610,10 +612,10 @@ static int bitmap_read_sb(struct bitmap *bitmap)
}
success:
/* assign fields using values from superblock */
bitmap->chunksize = chunksize;
bitmap->daemon_sleep = daemon_sleep;
bitmap->mddev->bitmap_info.chunksize = chunksize;
bitmap->mddev->bitmap_info.daemon_sleep = daemon_sleep;
bitmap->daemon_lastrun = jiffies;
bitmap->max_write_behind = write_behind;
bitmap->mddev->bitmap_info.max_write_behind = write_behind;
bitmap->flags |= le32_to_cpu(sb->state);
if (le32_to_cpu(sb->version) == BITMAP_MAJOR_HOSTENDIAN)
bitmap->flags |= BITMAP_HOSTENDIAN;
@@ -907,7 +909,7 @@ static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start)
chunks = bitmap->chunks;
file = bitmap->file;
BUG_ON(!file && !bitmap->offset);
BUG_ON(!file && !bitmap->mddev->bitmap_info.offset);
#ifdef INJECT_FAULTS_3
outofdate = 1;
@@ -967,14 +969,15 @@ static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start)
offset = sizeof(bitmap_super_t);
if (!file)
read_sb_page(bitmap->mddev,
bitmap->offset,
bitmap->mddev->bitmap_info.offset,
page,
index, count);
} else if (file) {
page = read_page(file, index, bitmap, count);
offset = 0;
} else {
page = read_sb_page(bitmap->mddev, bitmap->offset,
page = read_sb_page(bitmap->mddev,
bitmap->mddev->bitmap_info.offset,
NULL,
index, count);
offset = 0;
@@ -1096,7 +1099,8 @@ void bitmap_daemon_work(mddev_t *mddev)
mutex_unlock(&mddev->bitmap_info.mutex);
return;
}
if (time_before(jiffies, bitmap->daemon_lastrun + bitmap->daemon_sleep*HZ))
if (time_before(jiffies, bitmap->daemon_lastrun
+ bitmap->mddev->bitmap_info.daemon_sleep*HZ))
goto done;
bitmap->daemon_lastrun = jiffies;
@@ -1210,7 +1214,8 @@ void bitmap_daemon_work(mddev_t *mddev)
done:
if (bitmap->allclean == 0)
bitmap->mddev->thread->timeout = bitmap->daemon_sleep * HZ;
bitmap->mddev->thread->timeout =
bitmap->mddev->bitmap_info.daemon_sleep * HZ;
mutex_unlock(&mddev->bitmap_info.mutex);
}
@@ -1479,7 +1484,7 @@ void bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector)
return;
}
if (time_before(jiffies, (bitmap->last_end_sync
+ bitmap->daemon_sleep * HZ)))
+ bitmap->mddev->bitmap_info.daemon_sleep * HZ)))
return;
wait_event(bitmap->mddev->recovery_wait,
atomic_read(&bitmap->mddev->recovery_active) == 0);
@@ -1540,7 +1545,7 @@ void bitmap_dirty_bits(struct bitmap *bitmap, unsigned long s, unsigned long e)
void bitmap_flush(mddev_t *mddev)
{
struct bitmap *bitmap = mddev->bitmap;
int sleep;
long sleep;
if (!bitmap) /* there was no bitmap */
return;
@@ -1548,12 +1553,13 @@ void bitmap_flush(mddev_t *mddev)
/* run the daemon_work three time to ensure everything is flushed
* that can be
*/
sleep = bitmap->daemon_sleep;
bitmap->daemon_sleep = 0;
sleep = mddev->bitmap_info.daemon_sleep * HZ * 2;
bitmap->daemon_lastrun -= sleep;
bitmap_daemon_work(mddev);
bitmap->daemon_lastrun -= sleep;
bitmap_daemon_work(mddev);
bitmap->daemon_lastrun -= sleep;
bitmap_daemon_work(mddev);
bitmap->daemon_sleep = sleep;
bitmap_update_sb(bitmap);
}
@@ -1633,7 +1639,6 @@ int bitmap_create(mddev_t *mddev)
bitmap->mddev = mddev;
bitmap->file = file;
bitmap->offset = mddev->bitmap_info.offset;
if (file) {
get_file(file);
/* As future accesses to this file will use bmap,
@@ -1642,12 +1647,12 @@ int bitmap_create(mddev_t *mddev)
*/
vfs_fsync(file, file->f_dentry, 1);
}
/* read superblock from bitmap file (this sets bitmap->chunksize) */
/* read superblock from bitmap file (this sets mddev->bitmap_info.chunksize) */
err = bitmap_read_sb(bitmap);
if (err)
goto error;
bitmap->chunkshift = ffz(~bitmap->chunksize);
bitmap->chunkshift = ffz(~mddev->bitmap_info.chunksize);
/* now that chunksize and chunkshift are set, we can use these macros */
chunks = (blocks + CHUNK_BLOCK_RATIO(bitmap) - 1) >>
@@ -1689,7 +1694,7 @@ int bitmap_create(mddev_t *mddev)
mddev->bitmap = bitmap;
mddev->thread->timeout = bitmap->daemon_sleep * HZ;
mddev->thread->timeout = mddev->bitmap_info.daemon_sleep * HZ;
bitmap_update_sb(bitmap);