kernel.git/fs/jffs2/build.c, branch linux-3.2.y

Fix directory hardlinks from deleted directories

2016-04-01T00:54:35Z

commit be629c62a603e5935f8177fd8a19e014100a259e upstream. When a directory is deleted, we don't take too much care about killing off all the dirents that belong to it — on the basis that on remount, the scan will conclude that the directory is dead anyway. This doesn't work though, when the deleted directory contained a child directory which was moved *out*. In the early stages of the fs build we can then end up with an apparent hard link, with the child directory appearing both in its true location, and as a child of the original directory which are this stage of the mount process we don't *yet* know is defunct. To resolve this, take out the early special-casing of the "directories shall not have hard links" rule in jffs2_build_inode_pass1(), and let the normal nlink processing happen for directories as well as other inodes. Then later in the build process we can set ic->pino_nlink to the parent inode#, as is required for directories during normal operaton, instead of the nlink. And complain only *then* about hard links which are still in evidence even after killing off all the unreachable paths. Reported-by: Liu Song Signed-off-by: David Woodhouse Signed-off-by: Ben Hutchings

jffs2: use vzalloc

2010-12-03T16:27:34Z

Signed-off-by: Joe Perches Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

jffs2: Dynamically choose inocache hash size

2010-10-24T23:57:19Z

When JFFS2 is used for large volumes, the mount times are quite long. Increasing the hash size provides a significant speed boost on the OLPC XO-1 laptop. Add logic that dynamically selects a hash size based on the size of the medium. A 64mb medium will result in a hash size of 128, and a 512mb medium will result in a hash size of 1024. Signed-off-by: Daniel Drake Signed-off-by: David Woodhouse

jffs2: Update copyright notices

2010-08-08T13:15:22Z

Signed-off-by: David Woodhouse

[JFFS2] Track parent inode for directories (for NFS export)

2008-05-01T17:47:17Z

To support NFS export, we need to know the parent inode of directories. Rather than growing the jffs2_inode_cache structure, share space with the nlink field -- which was always set to 1 for directories anyway. Signed-off-by: David Woodhouse

[JFFS2] Add erase_checking_list to hold blocks being marked.

2008-04-23T13:15:24Z

Just to keep the debug code happy when it's adding all the blocks up. Otherwise, they disappear for a while while the locks are dropped to check them and write the cleanmarker. Signed-off-by: David Woodhouse

[JFFS2] Relax threshold for triggering GC due to dirty blocks.

2007-10-13T10:29:07Z

Instead of matching resv_blocks_gcmerge, which is only about 3, instead match resv_blocks_gctrigger, which includes a proportion of the total device size. These ought to become tunable from userspace, at some point. Signed-off-by: David Woodhouse

[JFFS2] Trigger garbage collection when very_dirty_list size becomes excessive

2007-10-06T19:12:58Z

With huge amounts of free space, we weren't bothering to GC for while a while, and pathological numbers of obsolete nodes were accumulating, seriously affecting performance on NAND flash (OLPC trac #3978) Signed-off-by: David Woodhouse

[JFFS2] Tidy up licensing/copyright boilerplate.

2007-04-25T13:16:47Z

In particular, remove the bit in the LICENCE file about contacting Red Hat for alternative arrangements. Their errant IS department broke that arrangement a long time ago -- the policy of collecting copyright assignments from contributors came to an end when the plug was pulled on the servers hosting the project, without notice or reason. We do still dual-license it for use with eCos, with the GPL+exception licence approved by the FSF as being GPL-compatible. It's just that nobody has the right to license it differently. Signed-off-by: David Woodhouse

JFFS2: memory leak in jffs2_do_mount_fs()

2007-02-09T15:00:21Z

If jffs2_sum_init() fails, c->blocks is not freed neither in jffs2_do_mount_fs() nor in jffs2_do_fill_super(). Signed-off-by: Dmitry Adamushko Signed-off-by: David Woodhouse