4 Commits

Author	SHA1	Message	Date
Boaz Harrosh	ba9e5e98ca	exofs: super_operations and file_system_type ... This patch ties all operation vectors into a file system superblock and registers the exofs file_system_type at module's load time. * The file system control block (AKA on-disk superblock) resides in an object with a special ID (defined in common.h). Information included in the file system control block is used to fill the in-memory superblock structure at mount time. This object is created before the file system is used by mkexofs.c It contains information such as: - The file system's magic number - The next inode number to be allocated Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>	2009-03-31 19:44:34 +03:00
Boaz Harrosh	e6af00f1d1	exofs: dir_inode and directory operations ... implementation of directory and inode operations. * A directory is treated as a file, and essentially contains a list of <file name, inode #> pairs for files that are found in that directory. The object IDs correspond to the files' inode numbers and are allocated using a 64bit incrementing global counter. * Each file's control block (AKA on-disk inode) is stored in its object's attributes. This applies to both regular files and other types (directories, device files, symlinks, etc.). Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>	2009-03-31 19:44:31 +03:00
Boaz Harrosh	beaec07ba6	exofs: address_space_operations ... OK Now we start to read and write from osd-objects. We try to collect at most contiguous pages as possible in a single write/read. The first page index is the object's offset. TODO: In 64-bit a single bio can carry at most 128 pages. Add support of chaining multiple bios Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>	2009-03-31 19:44:29 +03:00
Boaz Harrosh	e806271916	exofs: file and file_inode operations ... implementation of the file_operations and inode_operations for regular data files. Most file_operations are generic vfs implementations except: - exofs_truncate will truncate the OSD object as well - Generic file_fsync is not good for none_bd devices so open code it - The default for .flush in Linux is todo nothing so call exofs_fsync on the file. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>	2009-03-31 19:44:24 +03:00