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path: root/fs/ubifs/lpt_commit.c
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2009-03-20UBIFS: fix commentariesArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-16UBIFS: use KERN_CONTArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-16UBIFS: fix lprops committing bugArtem Bityutskiy
When writing lprop nodes, do not forget to set @from to 0 when switching the LEB. This fixes the following bug: UBIFS error (pid 27768): ubifs_leb_write: writing -15456 bytes at 16:15880, error -22 UBIFS error (pid 27768): do_commit: commit failed, error -22 UBIFS warning (pid 27768): ubifs_ro_mode: switched to read-only mode, error -22 Pid: 27768, comm: freespace Not tainted 2.6.29-rc4-ubifs-2.6 #43 Call Trace: [<ffffffffa00c46d6>] ubifs_ro_mode+0x54/0x56 [ubifs] [<ffffffffa00cfa16>] do_commit+0x4f5/0x50a [ubifs] [<ffffffffa00cfae7>] ubifs_run_commit+0xbc/0xdb [ubifs] [<ffffffffa00d42b9>] ubifs_budget_space+0x742/0x9ed [ubifs] [<ffffffff812daf45>] ? __mutex_lock_common+0x361/0x3ae [<ffffffffa00bc437>] ? ubifs_write_begin+0x18d/0x44c [ubifs] [<ffffffffa00bc5cb>] ubifs_write_begin+0x321/0x44c [ubifs] [<ffffffff8106222b>] ? trace_hardirqs_on_caller+0x1f/0x14d [<ffffffff81097ce2>] generic_file_buffered_write+0x12f/0x2d9 [<ffffffff8109828d>] __generic_file_aio_write_nolock+0x261/0x295 [<ffffffff81098aff>] generic_file_aio_write+0x69/0xc5 [<ffffffffa00bb914>] ubifs_aio_write+0x14c/0x19e [ubifs] [<ffffffff810c8f42>] do_sync_write+0xe7/0x12d [<ffffffff81055378>] ? autoremove_wake_function+0x0/0x38 [<ffffffff81149edc>] ? security_file_permission+0x11/0x13 [<ffffffff810c9827>] vfs_write+0xab/0x105 [<ffffffff810c9945>] sys_write+0x47/0x6f [<ffffffff8100c35b>] system_call_fastpath+0x16/0x1b Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-02-09UBIFS: fix dbg_chk_lpt_sz()Adrian Hunter
The debugging function dbg_chk_lpt_sz() was not working correctly for small min_io_unit size e.g. NOR flash. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-01-28UBIFS: fix LPT out-of-space bug (again)Adrian Hunter
The function to traverse and dirty the LPT was still not dirtying all nodes, with the result that the LPT could run out of space. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-12-31UBIFS: fix numerous spelling mistakesArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-12-31UBIFS: fix checkpatch.pl warningsArtem Bityutskiy
These are mostly long lines and wrong indentation warning fixes. But also there are two volatile variables and checkpatch.pl complains about them: WARNING: Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt + volatile int gc_seq; WARNING: Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt + volatile int gced_lnum; Well, we anyway use smp_wmb() for c->gc_seq and c->gced_lnum, so these 'volatile' modifiers can be just dropped. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-12-03UBIFS: introduce LPT dump functionArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-12-03UBIFS: dump stack in LPT check functionsArtem Bityutskiy
It is useful to know how we got to the checking function when hunting the bugs. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-12-03UBIFS: run debugging checks only if they are enabledArtem Bityutskiy
Do not forget to check whether lpt debugging is enabled before running the check functions. This commit also makes some spelling fixes. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-12-03UBIFS: separate debugging fields outArtem Bityutskiy
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>
2008-11-07UBIFS: allow for gaps when dirtying the LPTAdrian Hunter
The LPT may have gaps in it because initially empty LEBs are not added by mkfs.ubifs - because it does not know how many there are. Then UBIFS allocates empty LEBs in the reverse order that they are discovered i.e. they are added to, and removed from, the front of a list. That creates a gap in the middle of the LPT. The function dirtying the LPT tree (for the purpose of small model garbage collection) assumed that a gap could only occur at the very end of the LPT and stopped dirtying prematurely, which in turn resulted in the LPT running out of space - something that is designed to be impossible. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
2008-09-30UBIFS: check buffer length when scanning for LPT nodesAdrian Hunter
'is_a_node()' function was reading from a buffer before checking the buffer length, resulting in an OOPS as follows: BUG: unable to handle kernel paging request at f8f74002 IP: [<f8f9783f>] :ubifs:ubifs_unpack_bits+0xca/0x233 *pde = 19e95067 *pte = 00000000 Oops: 0000 [#1] PREEMPT SMP Modules linked in: ubifs ubi mtdchar bio2mtd mtd brd video output [last unloaded: mtd] Pid: 6414, comm: integck Not tainted (2.6.27-rc6ubifs34 #23) EIP: 0060:[<f8f9783f>] EFLAGS: 00010246 CPU: 0 EIP is at ubifs_unpack_bits+0xca/0x233 [ubifs] EAX: 00000000 EBX: f6090630 ECX: d9badcfc EDX: 00000000 ESI: 00000004 EDI: f8f74002 EBP: d9badcec ESP: d9badcc0 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process integck (pid: 6414, ti=d9bac000 task=f727dae0 task.ti=d9bac000) Stack: 00000006 f7306240 00000002 00000000 d9badcfc d9badd00 0000001c 00000000 f6090630 f6090630 f8f74000 d9badd10 f8fa1cc9 00000000 f8f74002 00000000 f8f74002 f60fe128 f6090630 f8f74000 d9badd68 f8fa1e46 00000000 0001e000 Call Trace: [<f8fa1cc9>] ? is_a_node+0x30/0x90 [ubifs] [<f8fa1e46>] ? dbg_check_ltab+0x11d/0x5bd [ubifs] [<f8fa388f>] ? ubifs_lpt_start_commit+0x42/0xed3 [ubifs] [<c038e76a>] ? mutex_unlock+0x8/0xa [<f8f9625d>] ? ubifs_tnc_start_commit+0x1c8/0xedb [ubifs] [<f8f8d90b>] ? do_commit+0x187/0x523 [ubifs] [<c038e76a>] ? mutex_unlock+0x8/0xa [<f8f7ca17>] ? bud_wbuf_callback+0x22/0x28 [ubifs] [<f8f8dd1d>] ? ubifs_run_commit+0x76/0xc0 [ubifs] [<f8f8032c>] ? ubifs_sync_fs+0xd2/0xe6 [ubifs] [<c01a2e97>] ? vfs_quota_sync+0x0/0x17e [<c01a5ba6>] ? quota_sync_sb+0x26/0xbb [<c01a2e97>] ? vfs_quota_sync+0x0/0x17e [<c01a5c5d>] ? sync_dquots+0x22/0x12c [<c0173d1b>] ? __fsync_super+0x19/0x68 [<c0173d75>] ? fsync_super+0xb/0x19 [<c0174065>] ? generic_shutdown_super+0x22/0xe7 [<c01a31fc>] ? vfs_quota_off+0x0/0x5fd [<f8f7cf4d>] ? ubifs_kill_sb+0x31/0x35 [ubifs] [<c01741f9>] ? deactivate_super+0x5e/0x71 [<c0187610>] ? mntput_no_expire+0x82/0xe4 [<c0187905>] ? sys_umount+0x4c/0x2f6 [<c0187bc8>] ? sys_oldumount+0x19/0x1b [<c0103b71>] ? sysenter_do_call+0x12/0x25 ======================= Code: c1 f8 03 8d 04 07 8b 4d e8 89 01 8b 45 e4 89 10 89 d8 89 f1 d3 e8 85 c0 74 07 29 d6 83 fe 20 75 2a 89 d8 83 c4 20 5b 5e 5f 5d EIP: [<f8f9783f>] ubifs_unpack_bits+0xca/0x233 [ubifs] SS:ESP 0068:d9badcc0 ---[ end trace 1f02572436518c13 ]--- Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
2008-09-30UBIFS: add more debugging messages for LPTAdrian Hunter
Also add debugging checks for LPT size and separate out c->check_lpt_free from unrelated bitfields. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
2008-07-15UBIFS: add new flash file systemArtem Bityutskiy
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>
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