linux-stable.git/fs/nilfs2/bmap.h, branch linux-4.2.y

nilfs2: add bmap function to seek a valid key

2015-04-17T13:04:03+00:00

Add a new bmap function, nilfs_bmap_seek_key(), which seeks a valid
entry and returns its key starting from a given key.  This function
can be used to skip hole blocks efficiently.

Signed-off-by: Ryusuke Konishi 
Cc: Dan Carpenter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

nilfs2: unify type of key arguments in bmap interface

2015-04-17T13:04:03+00:00

The type of key arguments in block mapping interface varies depending
on function.  For instance, nilfs_bmap_lookup_at_level() takes "__u64"
for its key argument whereas nilfs_bmap_lookup() takes "unsigned
long".

This fits them to "__u64" to eliminate the variation.

Signed-off-by: Ryusuke Konishi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

nilfs2: add omitted comments for different structures in driver implementation

2012-07-31T00:25:19+00:00

Add omitted comments for different structures in driver implementation.

Signed-off-by: Vyacheslav Dubeyko 
Signed-off-by: Ryusuke Konishi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

nilfs2: record used amount of each checkpoint in checkpoint list

2011-03-08T05:58:31+00:00

This records the number of used blocks per checkpoint in each
checkpoint entry of cpfile.  Even though userland tools can get the
block count via nilfs_get_cpinfo ioctl, it was not updated by the
nilfs2 kernel code.  This fixes the issue and makes it available for
userland tools to calculate used amount per checkpoint.

Signed-off-by: Ryusuke Konishi 
Cc: Jiro SEKIBA

nilfs2: get rid of GCDAT inode

2010-10-23T00:24:38+00:00

This applies prepared rollback function and redirect function of
metadata file to DAT file, and eliminates GCDAT inode.

Signed-off-by: Ryusuke Konishi

nilfs2: add routines to save and restore bmap state

2010-10-23T00:24:37+00:00

This adds routines to save and restore the state of bmap structure.
The bmap state is stored in a given nilfs_bmap_store object.

These routines will be used to roll back the state of dat inode
without using gcdat inode.

Signed-off-by: Ryusuke Konishi

nilfs2: get maximum number of child nodes from bmap object

2010-07-23T01:02:14+00:00

The patch "reduce repetitive calculation of max number of child nodes"
gathered up the calculation of maximum number of child nodes into
nilfs_btree_nchildren_per_block() function.  This makes the function
get resultant value from a private variable in bmap object instead of
calculating it for each call.

Signed-off-by: Ryusuke Konishi

nilfs2: unify bmap set_target_v operations

2010-07-23T01:02:14+00:00

This unifies two similar functions nilfs_btree_set_target_v and
nilfs_direct_set_target_v into one, nilfs_bmap_set_target_v.

Signed-off-by: Ryusuke Konishi

nilfs2: remove constant qualifier from argument of bmap propagate

2010-07-23T01:02:13+00:00

The first argument of bops->bop_propagate operation takes a constant
qualifier, and causes compilation error when removed cast to pointer
of nilfs_btree structure type.  This fixes the issue to prepare for
succesive removal of nilfs_btree struct.

Signed-off-by: Ryusuke Konishi

nilfs2: get rid of private conversion macros on bmap key and pointer

2010-07-23T01:02:13+00:00

Will remove nilfs_bmap_key_to_dkey(), nilfs_bmap_dkey_to_key(),
nilfs_bmap_ptr_to_dptr(), and nilfs_bmap_dptr_to_ptr() for simplicity.

Signed-off-by: Ryusuke Konishi