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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2011-03-09 05:05:08 +0300
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2011-03-09 05:05:08 +0300
commit9b1fc4e4973469dd3fab27ba5d78eca1cd5c13fe (patch)
tree0f51872d41cbc1e43db2fafab0074c107dfce7e7 /fs/nilfs2/the_nilfs.c
parent693dd321222f03b17668f88ceb0f7d518900191e (diff)
downloadlinux-9b1fc4e4973469dd3fab27ba5d78eca1cd5c13fe.tar.xz
nilfs2: move next generation counter into nilfs object
Moves s_next_generation counter and a spinlock protecting it to nilfs object from nilfs_sb_info structure. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/the_nilfs.c')
-rw-r--r--fs/nilfs2/the_nilfs.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index 40239a932dec..1bf695e887a7 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -25,6 +25,7 @@
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
+#include <linux/random.h>
#include <linux/crc32.h>
#include "nilfs.h"
#include "segment.h"
@@ -78,6 +79,7 @@ struct the_nilfs *alloc_nilfs(struct block_device *bdev)
INIT_LIST_HEAD(&nilfs->ns_dirty_files);
INIT_LIST_HEAD(&nilfs->ns_gc_inodes);
spin_lock_init(&nilfs->ns_inode_lock);
+ spin_lock_init(&nilfs->ns_next_gen_lock);
spin_lock_init(&nilfs->ns_last_segment_lock);
nilfs->ns_cptree = RB_ROOT;
spin_lock_init(&nilfs->ns_cptree_lock);
@@ -593,6 +595,9 @@ int init_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, char *data)
nilfs->ns_blocksize_bits = sb->s_blocksize_bits;
nilfs->ns_blocksize = blocksize;
+ get_random_bytes(&nilfs->ns_next_generation,
+ sizeof(nilfs->ns_next_generation));
+
err = nilfs_store_disk_layout(nilfs, sbp);
if (err)
goto failed_sbh;