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* nilfs2: get rid of nilfs_sb_info structureRyusuke Konishi2011-03-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This directly uses sb->s_fs_info to keep a nilfs filesystem object and fully removes the intermediate nilfs_sb_info structure. With this change, the hierarchy of on-memory structures of nilfs will be simplified as follows: Before: super_block -> nilfs_sb_info -> the_nilfs -> cptree --+-> nilfs_root (current file system) +-> nilfs_root (snapshot A) +-> nilfs_root (snapshot B) : -> nilfs_sc_info (log writer structure) After: super_block -> the_nilfs -> cptree --+-> nilfs_root (current file system) +-> nilfs_root (snapshot A) +-> nilfs_root (snapshot B) : -> nilfs_sc_info (log writer structure) The reason why we didn't design so from the beginning is because the initial shape also differed from the above. The early hierachy was composed of "per-mount-point" super_block -> nilfs_sb_info pairs and a shared nilfs object. On the kernel 2.6.37, it was changed to the current shape in order to unify super block instances into one per device, and this cleanup became applicable as the result. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
* nilfs2: add compat ioctlRyusuke Konishi2011-03-081-1/+1
| | | | | | | | | The current FS_IOC_GETFLAGS/SETFLAGS/GETVERSION will fail if application is 32 bit and kernel is 64 bit. This issue is avoidable by adding compat_ioctl method. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
* nilfs2: fiemap supportRyusuke Konishi2011-01-101-0/+1
| | | | | | | | | | | | | | This adds fiemap to nilfs. Two new functions, nilfs_fiemap and nilfs_find_uncommitted_extent are added. nilfs_fiemap() implements the fiemap inode operation, and nilfs_find_uncommitted_extent() helps to get a range of data blocks whose physical location has not been determined. nilfs_fiemap() collects extent information by looping through nilfs_bmap_lookup_contig and nilfs_find_uncommitted_extent routines. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
* drop unused dentry argument to ->fsyncChristoph Hellwig2010-05-271-2/+2
| | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* const: constify remaining file_operationsAlexey Dobriyan2009-10-011-1/+1
| | | | | | | | [akpm@linux-foundation.org: fix KVM] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* const: mark struct vm_struct_operationsAlexey Dobriyan2009-09-271-1/+1
| | | | | | | | | | | * mark struct vm_area_struct::vm_ops as const * mark vm_ops in AGP code But leave TTM code alone, something is fishy there with global vm_ops being used. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* const: mark remaining inode_operations as constAlexey Dobriyan2009-09-221-1/+1
| | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* nilfs2: use unlocked_ioctlRyusuke Konishi2009-04-071-1/+1
| | | | | | | | | | | | | Pekka Enberg suggested converting ->ioctl operations to use ->unlocked_ioctl to avoid BKL. The conversion was verified to be safe, so I will take it on this occasion. Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* nilfs2: remove compat ioctl codeRyusuke Konishi2009-04-071-1/+1
| | | | | | | | | This removes compat code from the nilfs ioctls and applies the same function for both .ioctl and .compat_ioctl file operations. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* nilfs2: fix missed-sync issue for do_sync_mapping_range()Ryusuke Konishi2009-04-071-24/+3
| | | | | | | | | | | | | | | | | | | | | | | | Chris Mason pointed out that there is a missed sync issue in nilfs_writepages(): On Wed, 17 Dec 2008 21:52:55 -0500, Chris Mason wrote: > It looks like nilfs_writepage ignores WB_SYNC_NONE, which is used by > do_sync_mapping_range(). where WB_SYNC_NONE in do_sync_mapping_range() was replaced with WB_SYNC_ALL by Nick's patch (commit: ee53a891f47444c53318b98dac947ede963db400). This fixes the problem by letting nilfs_writepages() write out the log of file data within the range if sync_mode is WB_SYNC_ALL. This involves removal of nilfs_file_aio_write() which was previously needed to ensure O_SYNC sync writes. Cc: Chris Mason <chris.mason@oracle.com> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* nilfs2: segment constructorRyusuke Konishi2009-04-071-3/+59
| | | | | | | | | | | | This adds the segment constructor (also called log writer). The segment constructor collects dirty buffers for every dirty inode, makes summaries of the buffers, assigns disk block addresses to the buffers, and then submits BIOs for the buffers. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* nilfs2: file operationsRyusuke Konishi2009-04-071-0/+125
This adds primitives for regular file handling. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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