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ocfs2: Add helper function in uptodate.c for removing xattr clusters

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The old uptodate only handles the issue of removing one buffer_head from
ocfs2 inode's buffer cache. With xattr clusters, we may need to remove
multiple buffer_head's at a time.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Tao Ma 2008-08-18 17:38:47 +08:00 committed by Mark Fasheh
parent 5a7bc8eb29
commit ac11c82719
2 changed files with 29 additions and 6 deletions
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32
fs/ocfs2/uptodate.c
View file

@ -511,14 +511,10 @@ static void ocfs2_remove_metadata_tree(struct ocfs2_caching_info *ci,
ci->ci_num_cached--;
}
/* Called when we remove a chunk of metadata from an inode. We don't
* bother reverting things to an inlined array in the case of a remove
* which moves us back under the limit. */
void ocfs2_remove_from_cache(struct inode *inode,
struct buffer_head *bh)
static void ocfs2_remove_block_from_cache(struct inode *inode,
sector_t block)
{
int index;
sector_t block = bh->b_blocknr;
struct ocfs2_meta_cache_item *item = NULL;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_caching_info *ci = &oi->ip_metadata_cache;
@ -544,6 +540,30 @@ void ocfs2_remove_from_cache(struct inode *inode,
kmem_cache_free(ocfs2_uptodate_cachep, item);
}
/*
* Called when we remove a chunk of metadata from an inode. We don't
* bother reverting things to an inlined array in the case of a remove
* which moves us back under the limit.
*/
void ocfs2_remove_from_cache(struct inode *inode,
struct buffer_head *bh)
{
sector_t block = bh->b_blocknr;
ocfs2_remove_block_from_cache(inode, block);
}
/* Called when we remove xattr clusters from an inode. */
void ocfs2_remove_xattr_clusters_from_cache(struct inode *inode,
sector_t block,
u32 c_len)
{
u64 i, b_len = ocfs2_clusters_to_blocks(inode->i_sb, 1) * c_len;
for (i = 0; i < b_len; i++, block++)
ocfs2_remove_block_from_cache(inode, block);
}
int __init init_ocfs2_uptodate_cache(void)
{
ocfs2_uptodate_cachep = kmem_cache_create("ocfs2_uptodate",

3
fs/ocfs2/uptodate.h
View file

@ -40,6 +40,9 @@ void ocfs2_set_new_buffer_uptodate(struct inode *inode,
struct buffer_head *bh);
void ocfs2_remove_from_cache(struct inode *inode,
struct buffer_head *bh);
void ocfs2_remove_xattr_clusters_from_cache(struct inode *inode,
sector_t block,
u32 c_len);
int ocfs2_buffer_read_ahead(struct inode *inode,
struct buffer_head *bh);