This splits the code to allocate root dentry into a separate routine
for convenience in successive changes.
Signed-off-by: Ryusuke Konishi konishi.ryus...@lab.ntt.co.jp
---
fs/nilfs2/super.c | 54 ++--
1 files changed, 35 insertions(+), 19
After applied the patch that unified sb instances, root dentry of
snapshots can be left in dcache even after their trees are unmounted.
The orphan root dentry/inode keeps a root object, and this causes
false positive of nilfs_checkpoint_is_mounted function.
This resolves the issue by having
Nilfs object holds a back pointer to a writable super block instance
in nilfs-ns_writer, and this became eliminable since sb is now made
per device and all inodes have a valid pointer to it.
This deletes the ns_writer pointer and a reader/writer semaphore
protecting it.
Signed-off-by: Ryusuke
Allows clear inode function (nilfs_clear_inode) to handle metadata
files that uses bitmap-based object alloctor. DAT and ifile
correspond to this.
Signed-off-by: Ryusuke Konishi konishi.ryus...@lab.ntt.co.jp
---
fs/nilfs2/inode.c |4
1 files changed, 4 insertions(+), 0 deletions(-)
This removes a back pointer to nilfs object from nilfs_mdt_info
structure that is attached to metadata files.
Signed-off-by: Ryusuke Konishi konishi.ryus...@lab.ntt.co.jp
---
fs/nilfs2/mdt.c|9 +++--
fs/nilfs2/mdt.h|8 ++--
fs/nilfs2/sufile.c |4 ++--
This moves sbi-s_inodes_count and sbi-s_blocks_count into nilfs_root
object.
Signed-off-by: Ryusuke Konishi konishi.ryus...@lab.ntt.co.jp
---
fs/nilfs2/inode.c |4 ++--
fs/nilfs2/sb.h |2 --
fs/nilfs2/segment.c |4 ++--
fs/nilfs2/super.c | 11 ++-
4 files changed,
This puts a pointer to nilfs_root object in the private part of
on-memory inode, and makes nilfs_iget function pick up the inode with
the same root object.
Non-root inodes inherit its nilfs_root object from parent inode. That
of the root inode is allocated through nilfs_attach_checkpoint()
This makes use of iget5_locked to allocate or get inode for metadata
files to stop using own inode allocator.
Signed-off-by: Ryusuke Konishi konishi.ryus...@lab.ntt.co.jp
---
fs/nilfs2/cpfile.c| 49 +
fs/nilfs2/cpfile.h|4 +-
fs/nilfs2/dat.c |
This finally removes own inode allocator and destructor functions for
metadata files. Several routines, nilfs_mdt_new(),
nilfs_mdt_new_common(), nilfs_mdt_clear(), nilfs_mdt_destroy(), and
nilfs_alloc_inode_common() will be gone.
Signed-off-by: Ryusuke Konishi konishi.ryus...@lab.ntt.co.jp
---
During garbage collection (GC), DAT file, which converts virtual block
number to real block number, may return disk block number that is not
yet written to the device.
To avoid access to unwritten blocks, the current implementation stores
changes to the caches of GCDAT during GC and atomically
Snapshots of nilfs are read-only.
After super block instances (sb) will be unified, nilfs will need to
check write access by a way other than implicit test with
IS_RDONLY(inode). This is because IS_RDONLY() refers to MS_RDONLY bit
of inode-i_sb-s_flags and it will become inaccurate after the
The previous export operations cannot handle multiple versions of
a filesystem if they belong to the same sb instance.
This adds a new type of file handle and extends export operations so
that they can get the inode specified by a checkpoint number as well
as an inode number and a generation
This adds optional function to metadata files which makes a copy of
bmap, page caches, and b-tree node cache, and rolls back to the copy
as needed.
This enhancement is intended to displace gcdat inode that provides a
similar function in a different way.
In this patch, nilfs_shadow_map structure
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