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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2018-09-07 14:36:44 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2018-10-23 13:48:57 +0200 |
| commit | 1e76592f2c3208ac635c2758aa8326d82fa64a72 (patch) | |
| tree | 7f9deb06a69fc5878c1d352473842c0f4d513915 /fs/ubifs/ubifs.h | |
| parent | 104115a3eb54e7e804cd4ef1d6426c0b8aaaeb60 (diff) | |
| download | linux-0-day-1e76592f2c3208ac635c2758aa8326d82fa64a72.tar.gz linux-0-day-1e76592f2c3208ac635c2758aa8326d82fa64a72.tar.xz | |
ubifs: Do not update inode size in-place in authenticated mode
In authenticated mode we cannot fixup the inode sizes in-place
during recovery as this would invalidate the hashes and HMACs
we stored for this inode.
Instead, we just write the updated inodes to the journal. We can
only do this after ubifs_rcvry_gc_commit() is done though, so for
authenticated mode call ubifs_recover_size() after
ubifs_rcvry_gc_commit() and not vice versa as normally done.
Calling ubifs_recover_size() after ubifs_rcvry_gc_commit() has the
drawback that after a commit the size fixup information is gone, so
when a powercut happens while recovering from another powercut
we may lose some data written right before the first powercut.
This is why we only do this in authenticated mode and leave the
behaviour for unauthenticated mode untouched.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/ubifs/ubifs.h')
| -rw-r--r-- | fs/ubifs/ubifs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 504b651b78f10..38401adaa00d6 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -2050,7 +2050,7 @@ int ubifs_clean_lebs(struct ubifs_info *c, void *sbuf); int ubifs_rcvry_gc_commit(struct ubifs_info *c); int ubifs_recover_size_accum(struct ubifs_info *c, union ubifs_key *key, int deletion, loff_t new_size); -int ubifs_recover_size(struct ubifs_info *c); +int ubifs_recover_size(struct ubifs_info *c, bool in_place); void ubifs_destroy_size_tree(struct ubifs_info *c); /* ioctl.c */ |