wireguard-linux/fs/jffs2/build.c, branch jd/unified-crypt-queue

Fix directory hardlinks from deleted directories

2016-02-25T11:11:28Z

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 Cc: stable@vger.kernel.org

tree wide: use kvfree() than conditional kfree()/vfree()

2016-01-23T01:02:18Z

There are many locations that do if (memory_was_allocated_by_vmalloc) vfree(ptr); else kfree(ptr); but kvfree() can handle both kmalloc()ed memory and vmalloc()ed memory using is_vmalloc_addr(). Unless callers have special reasons, we can replace this branch with kvfree(). Please check and reply if you found problems. Signed-off-by: Tetsuo Handa Acked-by: Michal Hocko Acked-by: Jan Kara Acked-by: Russell King Reviewed-by: Andreas Dilger Acked-by: "Rafael J. Wysocki" Acked-by: David Rientjes Cc: "Luck, Tony" Cc: Oleg Drokin Cc: Boris Petkov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

jffs2: Use pr_fmt and remove jffs: from formats

2012-03-26T23:40:19Z

Use pr_fmt to prefix KBUILD_MODNAME to appropriate logging messages. Remove now unnecessary internal prefixes from formats. Signed-off-by: Joe Perches Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

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