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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2009-01-05 21:36:19 -0500
committerTheodore Ts'o <tytso@mit.edu>2009-01-05 21:36:19 -0500
commit920313a726e04fef0f2c0bcb04ad8229c0e700d8 (patch)
tree7e7644a2fd48586ec2f455e56525565174798e4a /fs/ext4/ext4.h
parente21675d4b63975d09eb75c443c48ebe663d23e18 (diff)
ext4: Use EXT4_GROUP_INFO_NEED_INIT_BIT during resize
The new groups added during resize are flagged as need_init group. Make sure we properly initialize these groups. When we have block size < page size and we are adding new groups the page may still be marked uptodate even though we haven't initialized the group. While forcing the init of buddy cache we need to make sure other groups part of the same page of buddy cache is not using the cache. group_info->alloc_sem is added to ensure the same. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> cc: stable@kernel.org
Diffstat (limited to 'fs/ext4/ext4.h')
-rw-r--r--fs/ext4/ext4.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 8021bf558d1..8152b5603f0 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1060,12 +1060,13 @@ extern int __init init_ext4_mballoc(void);
extern void exit_ext4_mballoc(void);
extern void ext4_mb_free_blocks(handle_t *, struct inode *,
unsigned long, unsigned long, int, unsigned long *);
-extern int ext4_mb_add_more_groupinfo(struct super_block *sb,
+extern int ext4_mb_add_groupinfo(struct super_block *sb,
ext4_group_t i, struct ext4_group_desc *desc);
extern void ext4_mb_update_group_info(struct ext4_group_info *grp,
ext4_grpblk_t add);
-
-
+extern int ext4_mb_get_buddy_cache_lock(struct super_block *, ext4_group_t);
+extern void ext4_mb_put_buddy_cache_lock(struct super_block *,
+ ext4_group_t, int);
/* inode.c */
int ext4_forget(handle_t *handle, int is_metadata, struct inode *inode,
struct buffer_head *bh, ext4_fsblk_t blocknr);