linux.git/fs/nilfs2/dat.c, branch v2.6.35

nilfs2: fix various typos in comments

2010-03-14T01:29:51+00:00

This fixes various typos I found in comments of nilfs2.

Signed-off-by: Ryusuke Konishi

nilfs2: delete unnecessary condition in nilfs_dat_translate

2010-02-13T03:26:03+00:00

This is a trivial patch to delete unnecessary condition in nilfs_dat_translate.

nilfs_dat_translate() will asign translated address to *blocknrp if blocknrp
is not NULL.  However the condition is unneeded, because all callers of
nilfs_dat_translate() pass blocknrp properly.

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

nilfs2: add palloc cache to dat

2009-11-20T01:05:50+00:00

This adds the palloc cache to DAT file.  The palloc cache is allocated
on the extended region of nilfs_mdt_info struct.  The struct
nilfs_dat_info defines the extended on memory structure of DAT.

Signed-off-by: Ryusuke Konishi

nilfs2: separate read method of meta data files on super root block

2009-11-20T01:05:48+00:00

Will displace nilfs_mdt_read_inode_direct function with an individual
read method: nilfs_dat_read, nilfs_sufile_read, nilfs_cpfile_read.

This provides the opportunity to initialize local variables of each
metadata file after reading the inode.

Signed-off-by: Ryusuke Konishi

nilfs2: separate constructor of metadata files

2009-11-20T01:05:48+00:00

This will displace nilfs_mdt_new() constructor with individual
metadata file constructors like nilfs_dat_new(), new_sufile_new(),
nilfs_cpfile_new(), and nilfs_ifile_new().

This makes it possible for each metadata file to have own
intialization code.

Signed-off-by: Ryusuke Konishi

nilfs2: add update functions of virtual block address to dat

2009-09-14T09:27:15+00:00

This is a preparation for the successive cleanup ("nilfs2: allow btree
to directly call dat operations").

This adds functions bundling a few operations to change an entry of
virtual block address on the dat file.

Signed-off-by: Ryusuke Konishi

nilfs2: remove nilfs_dat_abort_start and nilfs_dat_abort_free

2009-09-14T09:27:15+00:00

These functions are not called from any functions.

Signed-off-by: Ryusuke Konishi

nilfs2: fix incorrect KERN_CRIT messages in case of write failures

2009-07-05T01:44:20+00:00

In case of write-failure retries, the following KERN_CRIT level
messages are mistakenly output by nilfs_dat_commit_start() function:

nilfs_dat_commit_start: vbn = 408463, start = 12506, end = 18446744073709551615, pbn = 530210
nilfs_dat_commit_start: vbn = 408515, start = 12506, end = 18446744073709551615, pbn = 530211
nilfs_dat_commit_start: vbn = 408464, start = 12506, end = 18446744073709551615, pbn = 530212
...

This suppresses these messages.

Signed-off-by: Ryusuke Konishi 
Cc: stable@kernel.org

nilfs2: allow future expansion of metadata read out via get info ioctl

2009-06-10T14:41:11+00:00

Nilfs has some ioctl commands to read out metadata from meta data
files:

 - NILFS_IOCTL_GET_CPINFO for checkpoint file,
 - NILFS_IOCTL_GET_SUINFO for segment usage file, and
 - NILFS_IOCTL_GET_VINFO for Disk Address Transalation (DAT) file,
   respectively.

Every routine on these metadata files is implemented so that it allows
future expansion of on-disk format.  But, the above ioctl commands do
not support expansion even though nilfs_argv structure can handle
arbitrary size for data exchanged via ioctl.

This allows future expansion of the following structures which give
basic format of the "get information" ioctls:

 - struct nilfs_cpinfo
 - struct nilfs_suinfo
 - struct nilfs_vinfo

So, this introduces forward compatility of such ioctl commands.

In this patch, a sanity check in nilfs_ioctl_get_info() function is
changed to accept larger data structure [1], and metadata read
routines are rewritten so that they become compatible for larger
structures; the routines will just ignore the remaining fields which
the current version of nilfs doesn't know.

[1] The ioctl function already has another upper limit (PAGE_SIZE
    against a structure, which appears in nilfs_ioctl_wrap_copy
    function), and this will not cause security problem.

Signed-off-by: Ryusuke Konishi

nilfs2: remove nilfs_dat_prepare_free function

2009-06-10T14:41:09+00:00

This function is unused.

Signed-off-by: Ryusuke Konishi