diff options
Diffstat (limited to 'fs/nilfs2/btnode.c')
-rw-r--r-- | fs/nilfs2/btnode.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c index 66bdaa2cf496..e74fda212620 100644 --- a/fs/nilfs2/btnode.c +++ b/fs/nilfs2/btnode.c @@ -20,6 +20,23 @@ #include "page.h" #include "btnode.h" + +/** + * nilfs_init_btnc_inode - initialize B-tree node cache inode + * @btnc_inode: inode to be initialized + * + * nilfs_init_btnc_inode() sets up an inode for B-tree node cache. + */ +void nilfs_init_btnc_inode(struct inode *btnc_inode) +{ + struct nilfs_inode_info *ii = NILFS_I(btnc_inode); + + btnc_inode->i_mode = S_IFREG; + ii->i_flags = 0; + memset(&ii->i_bmap_data, 0, sizeof(struct nilfs_bmap)); + mapping_set_gfp_mask(btnc_inode->i_mapping, GFP_NOFS); +} + void nilfs_btnode_cache_clear(struct address_space *btnc) { invalidate_mapping_pages(btnc, 0, -1); @@ -29,7 +46,7 @@ void nilfs_btnode_cache_clear(struct address_space *btnc) struct buffer_head * nilfs_btnode_create_block(struct address_space *btnc, __u64 blocknr) { - struct inode *inode = NILFS_BTNC_I(btnc); + struct inode *inode = btnc->host; struct buffer_head *bh; bh = nilfs_grab_buffer(inode, btnc, blocknr, BIT(BH_NILFS_Node)); @@ -53,11 +70,11 @@ nilfs_btnode_create_block(struct address_space *btnc, __u64 blocknr) } int nilfs_btnode_submit_block(struct address_space *btnc, __u64 blocknr, - sector_t pblocknr, int mode, int mode_flags, + sector_t pblocknr, blk_opf_t opf, struct buffer_head **pbh, sector_t *submit_ptr) { struct buffer_head *bh; - struct inode *inode = NILFS_BTNC_I(btnc); + struct inode *inode = btnc->host; struct page *page; int err; @@ -86,13 +103,13 @@ int nilfs_btnode_submit_block(struct address_space *btnc, __u64 blocknr, } } - if (mode_flags & REQ_RAHEAD) { + if (opf & REQ_RAHEAD) { if (pblocknr != *submit_ptr + 1 || !trylock_buffer(bh)) { err = -EBUSY; /* internal code */ brelse(bh); goto out_locked; } - } else { /* mode == READ */ + } else { /* opf == REQ_OP_READ */ lock_buffer(bh); } if (buffer_uptodate(bh)) { @@ -105,7 +122,7 @@ int nilfs_btnode_submit_block(struct address_space *btnc, __u64 blocknr, bh->b_blocknr = pblocknr; /* set block address for read */ bh->b_end_io = end_buffer_read_sync; get_bh(bh); - submit_bh(mode, mode_flags, bh); + submit_bh(opf, bh); bh->b_blocknr = blocknr; /* set back to the given block address */ *submit_ptr = pblocknr; err = 0; @@ -157,7 +174,7 @@ int nilfs_btnode_prepare_change_key(struct address_space *btnc, struct nilfs_btnode_chkey_ctxt *ctxt) { struct buffer_head *obh, *nbh; - struct inode *inode = NILFS_BTNC_I(btnc); + struct inode *inode = btnc->host; __u64 oldkey = ctxt->oldkey, newkey = ctxt->newkey; int err; |