user/sven/linux.git/include/linux/nilfs2_fs.h, branch v3.2.31

nilfs2: add ioctl which limits range of segment to be allocated

2011-05-10T13:21:45Z

This adds a new ioctl command which limits range of segment to be allocated. This is intended to gather data whithin a range of the partition before shrinking the filesystem, or to control new log location for some purpose. If a range is specified by the ioctl, segment allocator of nilfs tries to allocate new segments from the range unless no free segments are available there. Signed-off-by: Ryusuke Konishi

nilfs2: super root size should change depending on inode size

2011-05-10T13:21:44Z

The size of super root structure depends on inode size, so NILFS_SR_BYTES macro should be a function of the inode size. This fixes the issue. Even though a different size value will be written for a possible future filesystem with extended inode, but fortunately this does not break disk format compatibility. Signed-off-by: Ryusuke Konishi

nilfs2: move NILFS_SUPER_MAGIC to linux/magic.h

2011-03-10T08:29:40Z

move NILFS_SUPER_MAGIC macro to linux/magic.h from linux/nilfs2_fs.h in the same manner as other filesystem magic number defined in the file. Signed-off-by: Jiro SEKIBA Signed-off-by: Ryusuke Konishi

nilfs2: record used amount of each checkpoint in checkpoint list

2011-03-08T05:58:31Z

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: optimize rec_len functions

2011-03-08T05:58:30Z

This is a similar change to those in ext2/ext3 codebase (commit 40a063f6691ce937 and a4ae3094869f18e2, respectively). The addition of 64k block capability in the rec_len_from_disk and rec_len_to_disk functions added a bit of math overhead which slows down file create workloads needlessly when the architecture cannot even support 64k blocks. This will cut the corner. Signed-off-by: Ryusuke Konishi

nilfs2: use common file attribute macros

2011-03-08T05:58:29Z

Replaces uses of own inode flags (i.e. NILFS_SECRM_FL, NILFS_UNRM_FL, NILFS_COMPR_FL, and so forth) with common inode flags, and removes the own flag declarations. Signed-off-by: Ryusuke Konishi

nilfs2: change license of exported header file

2010-10-23T00:24:39Z

This allows other projects to carry copies of the header file related to ABI and disk format (i.e. "nilfs2_fs.h") without it or distributors having to worry about effects on the project's overall license terms. It's also desired for switching the license of nilfs library to LGPL. Jiro SEKIBA pointed out these license issues (Message-ID: <87tylo7msw.wl%jir@sekiba.com>), and he suggested switching license of the library and nilfs2_fs.h to GNU Lesser General Public License. We take in his suggestion to avoid the license issues. Signed-off-by: Ryusuke Konishi Cc: Jiro SEKIBA Cc: linux-nilfs

nilfs2: get rid of snapshot mount flag

2010-10-23T00:24:36Z

This flag is a fake used to distinguish type of super block instance. And, it got obsolete by the unification of sb. Signed-off-by: Ryusuke Konishi

nilfs2: keep zero value in i_cno except for gc-inodes

2010-10-23T00:24:33Z

On-memory inode structures of nilfs have a member "i_cno" which stores a checkpoint number related to the inode. For gc-inodes, this field indicates version of data each gc-inode caches for GC. Log writer temporarily uses "i_cno" to transfer the latest checkpoint number. This stops the latter use and lets only gc-inodes use it. The purpose of this patch is to allow the successive change use "i_cno" for inode lookup. Signed-off-by: Ryusuke Konishi

nilfs2: accept future revisions

2010-10-23T00:24:33Z

Compatibility of nilfs partitions is now managed with three feature sets. This changes old compatibility check with revision number so that it can accept future revisions. Note that we can stop support of experimental versions of nilfs that doesn't know the feature sets by incrementing NILFS_CURRENT_REV. We don't have to do it soon, but it would be a possible option whenever the need arises. Signed-off-by: Ryusuke Konishi