linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2010-10-15	Merge branch 'globalheartbeat-2' of git://oss.oracle.com/git/smushran/linux-2.6 into ocfs2-merge-window	Joel Becker	1	-4/+4
	Conflicts: fs/ocfs2/ocfs2.h
2010-09-23	ocfs2: Sync inode flags with ext2.	Tao Ma	1	-4/+4
	We sync our inode flags with ext2 and define them by hex values. But actually in commit 3669567(4 years ago), all these values are moved to include/linux/fs.h. So we'd better also use them as what ext2 did. So sync our inode flags with ext2 by using FS_*. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-09-10	Ocfs2: Add new OCFS2_IOC_INFO ioctl for ocfs2 v8.	Tristan Ye	1	-0/+95
	The reason why we need this ioctl is to offer the none-privileged end-user a possibility to get filesys info gathering. We use OCFS2_IOC_INFO to manipulate the new ioctl, userspace passes a structure to kernel containing an array of request pointers and request count, such as, * From userspace: struct ocfs2_info_blocksize oib = { .ib_req = { .ir_magic = OCFS2_INFO_MAGIC, .ir_code = OCFS2_INFO_BLOCKSIZE, ... } ... } struct ocfs2_info_clustersize oic = { ... } uint64_t reqs[2] = {(unsigned long)&oib, (unsigned long)&oic}; struct ocfs2_info info = { .oi_requests = reqs, .oi_count = 2, } ret = ioctl(fd, OCFS2_IOC_INFO, &info); * In kernel: Get the request pointers from info, then handle each request one bye one. Idea here is to make the spearated request small enough to guarantee a better backward&forward compatibility since a small piece of request would be less likely to be broken if filesys on raw disk get changed. Currently, the following 7 requests are supported per the requirement from userspace tool o2info, and I believe it will grow over time:-) OCFS2_INFO_CLUSTERSIZE OCFS2_INFO_BLOCKSIZE OCFS2_INFO_MAXSLOTS OCFS2_INFO_LABEL OCFS2_INFO_UUID OCFS2_INFO_FS_FEATURES OCFS2_INFO_JOURNAL_SIZE This ioctl is only specific to OCFS2. Signed-off-by: Tristan Ye <tristan.ye@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2010-03-02	Ocfs2: Move ocfs2 ioctl definitions from ocfs2_fs.h to newly added ocfs2_ioctl.h	Tristan Ye	1	-0/+79
	Currently we were adding ioctl cmds/structures for ocfs2 into ocfs2_fs.h which was used for define ocfs2 on-disk layout. That sounds a little bit confusing, and it may be quickly polluted espcially when growing the ocfs2_info_request ioctls afterwards(it will grow i bet). As a result, such OCFS2 IOCs do need to be placed somewhere other than ocfs2_fs.h, a separated ocfs2_ioctl.h will be added to store such ioctl structures and definitions which could also be used from userspace to invoke ioctls call. Signed-off-by: Tristan Ye <tristan.ye@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>