From 6c6de1aa65189c37cc3c9af78da756c06a99899b Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Sat, 30 Apr 2011 18:56:12 +0900 Subject: nilfs2: super root size should change depending on inode size 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 --- include/linux/nilfs2_fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h index 8768c469e93e..bd8678f8a421 100644 --- a/include/linux/nilfs2_fs.h +++ b/include/linux/nilfs2_fs.h @@ -107,7 +107,7 @@ struct nilfs_super_root { #define NILFS_SR_DAT_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 0) #define NILFS_SR_CPFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 1) #define NILFS_SR_SUFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 2) -#define NILFS_SR_BYTES (sizeof(struct nilfs_super_root)) +#define NILFS_SR_BYTES(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 3) /* * Maximal mount counts -- cgit From 619205da5b567504310daf829dede1187fa29bbc Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Thu, 5 May 2011 01:23:57 +0900 Subject: nilfs2: add ioctl which limits range of segment to be allocated 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 --- include/linux/nilfs2_fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h index bd8678f8a421..7454ad7451b4 100644 --- a/include/linux/nilfs2_fs.h +++ b/include/linux/nilfs2_fs.h @@ -845,5 +845,7 @@ struct nilfs_bdesc { _IOR(NILFS_IOCTL_IDENT, 0x8A, __u64) #define NILFS_IOCTL_RESIZE \ _IOW(NILFS_IOCTL_IDENT, 0x8B, __u64) +#define NILFS_IOCTL_SET_ALLOC_RANGE \ + _IOW(NILFS_IOCTL_IDENT, 0x8C, __u64[2]) #endif /* _LINUX_NILFS_FS_H */ -- cgit