Commit Graph

18 Commits

Author SHA1 Message Date
Artem Bityutskiy 2b1844a8c9 UBIFS: introduce helper functions for debugging checks and tests
This patch introduces helper functions for all debugging checks, so instead of
doing

if (!(ubifs_chk_flags & UBIFS_CHK_GEN))

we now do

if (!dbg_is_chk_gen(c))

This is a preparation to further changes where the flags will go away, and
we'll need to only change the helper functions, but the code which utilizes
them won't be touched.

At the same time this patch removes 'dbg_force_in_the_gaps()',
'dbg_force_in_the_gaps_enabled()', and dbg_failure_mode helpers for
consistency.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-07-04 10:54:28 +03:00
Artem Bityutskiy 3766244769 UBIFS: use correct flags in lprops
The UBIFS lpt tree is in many aspects similar to the TNC tree, and we have
similar flags for these trees. And by mistake we use the COW_ZNODE flag for
LPT in some places, instead of the right flag COW_CNODE. And this works
only because these two constants have the same value.

This patch makes all the LPT code to use COW_CNODE and also changes COW_CNODE
constant value to make sure we do not misuse the flags any more.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-07-04 10:54:27 +03:00
Artem Bityutskiy 12346037a7 UBIFS: dump more in the lprops debugging check
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-05-16 10:31:39 +03:00
Artem Bityutskiy 34bdc3e257 UBIFS: simplify lprops debugging check
Now we return all errors from 'scan_check_cb()' directly, so we do not need
'struct scan_check_data' any more, and this patch removes it.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-05-16 10:31:39 +03:00
Artem Bityutskiy dcc50c8ee3 UBIFS: simplify error path in lprops debugging check
Simplify error path in 'scan_check_cb()' and stop using the special 'data->err'
field, but instead return the error code directly.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-05-16 10:31:38 +03:00
Artem Bityutskiy 8ca5175b02 UBIFS: improve debugging lprops scanning a little
When doing the lprops extra check ('dbg_check_lprops()') we scan whole media.
We even scan empty and freeable LEBs which may contain garbage, which we handle
after scanning. This patch teach the lprops checking function
('scan_check_cb()') to avoid scanning for free and freeable LEBs and save time.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-05-16 10:31:38 +03:00
Artem Bityutskiy fc5e58c0c4 UBIFS: use GFP_NOFS properly
This patch fixes a brown-paperbag bug which was introduced by me:
I used incorrect "GFP_KERNEL | GFP_NOFS" allocation flags to make
sure my allocations do not cause write-back. But the correct form
is "GFP_NOFS".

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-03-24 16:14:26 +02:00
Artem Bityutskiy cd5f7485bb UBIFS: allocate scanning buffer on demand
Instead of using pre-allocated 'c->dbg->buf' buffer in
'scan_check_cb()', dynamically allocate it when needed. The intend
is to get rid of the pre-allocated 'c->dbg->buf' buffer and save
128KiB of RAM (or more if PEB size is larger). Indeed, currently we
allocate this memory even if the user never enables any self-check,
which is wasteful.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-03-16 14:05:24 +02:00
Artem Bityutskiy be9e62a730 UBIFS: improve lprops dump
Improve 'dbg_dump_lprop()' and print dark and dead space there,
decode flags, and journal heads.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-09-15 17:09:48 +03:00
Artem Bityutskiy 055da1b704 UBIFS: various minor commentary fixes
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-09-15 17:09:24 +03:00
Artem Bityutskiy 348709bad3 UBIFS: do not print scary error messages needlessly
At the moment UBIFS print large and scary error messages and
flash dumps in case of nearly any corruption, even if it is
a recoverable corruption. For example, if the master node is
corrupted, ubifs_scan() prints error dumps, then UBIFS recovers
just fine and goes on.

This patch makes UBIFS print scary error messages only in
real cases, which are not recoverable. It adds 'quiet' argument
to the 'ubifs_scan()' function, so the caller may ask 'ubi_scan()'
not to print error messages if the caller is able to do recovery.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
2009-09-10 12:06:47 +03:00
Artem Bityutskiy 84abf972cc UBIFS: add re-mount debugging checks
We observe space corrupted accounting when re-mounting. So add some
debbugging checks to catch problems like this.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-01-26 12:54:11 +02:00
Artem Bityutskiy e4d9b6cbfc UBIFS: fix LEB list freeing
When freeing the c->idx_lebs list, we have to release the LEBs as well,
because we might be called from mount to read-only mode code. Otherwise
the LEBs stay taken forever, which may cause problems when we re-mount
back ro RW mode.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-01-26 12:54:11 +02:00
Artem Bityutskiy d3cf502b6c UBIFS: various comment improvements and fixes
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-12-23 12:23:08 +02:00
Artem Bityutskiy 17c2f9f85c UBIFS: separate debugging fields out
Introduce a new data structure which contains all debugging
stuff inside. This is cleaner than having debugging stuff
directly in 'c'.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-12-03 13:14:33 +02:00
Artem Bityutskiy 746103aca2 UBIFS: inline one-line functions
'ubifs_get_lprops()' and 'ubifs_release_lprops()' basically wrap
mutex lock and unlock. We have them because we want lprops subsystem
be separate and as independent as possible. And we planned better
locking rules for lprops.

Anyway, because they are short, it is better to inline them.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-09-30 11:12:56 +03:00
Artem Bityutskiy 948cfb219b UBIFS: add a print, fix comments and more minor stuff
This commit adds a reserved pool size print and tweaks the
prints to make them look nicer.

It also fixes and cleans-up some comments.

Additionally, it deletes some blank lines to make the code look
a little nicer.

In other words, nothing essential.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-09-30 11:12:55 +03:00
Artem Bityutskiy 1e51764a3c UBIFS: add new flash file system
This is a new flash file system. See
http://www.linux-mtd.infradead.org/doc/ubifs.html

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
2008-07-15 17:35:15 +03:00