talos-op-linux/fs/adfs/adfs.h, branch master

fs/adfs: mostly divorse inode number from indirect disc address

2020-01-21T01:12:42+00:00

Avoid using the inode number as the indirect disc address, even though these currently have the same value. Signed-off-by: Russell King Signed-off-by: Al Viro

fs/adfs: newdir: split out directory commit from update

2020-01-21T01:12:42+00:00

After changing a directory, we need to update the sequence numbers and calculate the new check byte before the directory is scheduled to be written back to the media. Since this needs to happen for any change to the directory, move this into a separate method. Signed-off-by: Russell King Signed-off-by: Al Viro

fs/adfs: dir: use pointers to access directory head/tails

2020-01-21T01:12:41+00:00

Add and use pointers in the adfs_dir structure to access the directory head and tail structures, which will always be contiguous in a buffer. This allows us to avoid memcpy()ing the data in the new directory code, making it slightly more efficient. Signed-off-by: Russell King Signed-off-by: Al Viro

fs/adfs: dir: add more efficient iterate() per-format method

2020-01-21T01:12:41+00:00

Rather than using setpos + getnext to iterate through the directory entries, pass iterate() down to the dir format code to populate the dirents. Signed-off-by: Russell King Signed-off-by: Al Viro

fs/adfs: dir: add generic directory reading

2020-01-21T01:12:41+00:00

Both directory formats code the mechanics of fetching the directory buffers using their own implementations. Consolidate these into one implementation. Signed-off-by: Russell King Signed-off-by: Al Viro

fs/adfs: dir: add generic copy functions

2020-01-21T01:12:41+00:00

Directories can span multiple buffers, and we currently open-code memcpy access to these buffers, including dealing with entries that are split across multiple buffers. Such code exists in both directory format implementations. Provide common functions to allow data to be copied from/to the directory buffers as if they were a contiguous set of buffers, and use them when accessing directories. Signed-off-by: Russell King Signed-off-by: Al Viro

fs/adfs: dir: add common directory sync method

2020-01-21T01:12:41+00:00

adfs_fplus_sync() can be used for both directory formats since we now have a common way to access the buffer heads, so move it into dir.c and appropriately rename it. Remove the directory-format specific implementations. Signed-off-by: Russell King Signed-off-by: Al Viro

fs/adfs: dir: add common directory buffer release method

2020-01-21T01:12:41+00:00

With the bhs pointer in place, we have no need for separate per-format free() methods, since a generic version will do. Provide a generic implementation, remove the format specific implementations and the method function pointer. Signed-off-by: Russell King Signed-off-by: Al Viro

fs/adfs: dir: rename bh_fplus to bhs

2020-01-21T01:12:40+00:00

Rename bh_fplus to bhs in preparation to make some of the directory handling code sharable between implementations. Signed-off-by: Russell King Signed-off-by: Al Viro

fs/adfs: map: factor out map cleanup

2020-01-21T01:12:40+00:00

We have several places which deal with releasing the map buffers and freeing the map array. Provide a helper for this. Signed-off-by: Russell King Signed-off-by: Al Viro