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path: root/fs/jffs2/erase.c
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2007-04-25[JFFS2] Tidy up licensing/copyright boilerplate.David Woodhouse1-3/+1
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 <dwmw2@infradead.org>
2007-04-17[JFFS2] fix deadlock on error pathArtem Bityutskiy1-1/+1
When the MTD driver returns write failure, the following deadlock occurs: We are in __jffs2_flush_wbuf(), we hold &c->wbuf_sem. Write failure. jffs2_wbuf_recover()->jffs2_reserve_space_gc()->jffs2_do_reserve_space() ->jffs2_erase_pending_blocks()->jffs2_flash_read() and it tries to lock &c->wbuf_sem again. Deadlock. Reported-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-06-28Merge git://git.infradead.org/mtd-2.6Linus Torvalds1-4/+15
* git://git.infradead.org/mtd-2.6: [MTD] NAND: Select chip before checking write protect status [MTD] CORE mtdchar.c: fix off-by-one error in lseek() [MTD] NAND: Fix typo in mtd/nand/ts7250.c [JFFS2][XATTR] coexistence between xattr and write buffering support. [JFFS2][XATTR] Fix wrong copyright [JFFS2][XATTR] Re-define xd->refcnt as atomic_t [JFFS2][XATTR] Fix memory leak with jffs2_xattr_ref [JFFS2][XATTR] rid unnecessary writing of delete marker. [JFFS2][XATTR] Fix ACL bug when updating null xattr by null ACL. [JFFS2][XATTR] using 'delete marker' for xdatum/xref deletion [MTD] Fix off-by-one error in physmap.c [MTD] Remove unused 'nr_banks' variable from ixp2000 map driver [MTD NAND] s3c2412 support in s3c2410.c [MTD] Initialize 'writesize' [MTD] NAND: ndfc fix address offset thinko [MTD] NAND: S3C2410 convert prinks to dev_*()s [MTD] NAND: Missing fixups
2006-06-27[JFFS2][XATTR] using 'delete marker' for xdatum/xref deletionKaiGai Kohei1-4/+15
- When xdatum is removed, a new xdatum with 'delete marker' is written. (version==0xffffffff means 'delete marker') - When xref is removed, a new xref with 'delete marker' is written. (odd-numbered xseqno means 'delete marker') - delete_xattr_(datum/xref)_delay() are new deletion functions are added. We can only use them if we can detect the target obsolete xdatum/xref as a orphan or errir one. (e.g when inode deletion, or detecting crc error) [1/3] jffs2-xattr-v6-01-delete_marker.patch Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-06-26[PATCH] fs: use list_move()Akinobu Mita1-10/+5
This patch converts the combination of list_del(A) and list_add(A, B) to list_move(A, B) under fs/. Cc: Ian Kent <raven@themaw.net> Acked-by: Joel Becker <joel.becker@oracle.com> Cc: Neil Brown <neilb@cse.unsw.edu.au> Cc: Hans Reiser <reiserfs-dev@namesys.com> Cc: Urban Widmark <urban@teststation.com> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-05-27[JFFS2] Switch to using an array of jffs2_raw_node_refs instead of a list.David Woodhouse1-8/+13
This allows us to drop another pointer from the struct jffs2_raw_node_ref, shrinking it to 8 bytes on 32-bit machines (if the TEST_TOTLEN) paranoia check is turned off, which will be committed soon). Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-25[JFFS2] Add 'jeb' argument to jffs2_prealloc_raw_node_refs()David Woodhouse1-1/+1
Preallocation of refs is shortly going to be a per-eraseblock thing, rather than per-filesystem. Add the required argument to the function. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-25[JFFS2] jffs2_free_all_node_refs() doesn't free them all. Rename it.David Woodhouse1-2/+2
... to jffs2_free_jeb_node_refs() since that's what it does. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-24[JFFS2] Reduce visibility of raw_node_ref to upper layers of JFFS2 code.David Woodhouse1-12/+4
As the first step towards eliminating the ref->next_phys member and saving memory by using an _array_ of struct jffs2_raw_node_ref per eraseblock, stop the write functions from allocating their own refs; have them just _reserve_ the appropriate number instead. Then jffs2_link_node_ref() can just fill them in. Use a linked list of pre-allocated refs in the superblock, for now. Once we switch to an array, it'll just be a case of extending that array. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-22[JFFS2] Add some preemptive BUG checks for XATTR codeDavid Woodhouse1-0/+1
In a couple of places, we assume that what's at the end of the ->next_in_ino list is a struct jffs2_inode_cache. Let's check for that, since we expect it to change soon. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-22[JFFS2] Extend jffs2_link_node_ref() to link into per-inode list too.David Woodhouse1-2/+1
Let's avoid the potential for forgetting to set ref->next_in_ino, by doing it within jffs2_link_node_ref() instead. This highlights the ugliness of what we're currently doing with xattr_datum and xattr_ref structures -- we should find a nicer way of dealing with that. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-21[JFFS2] Fix summary handling of unknown but compatible nodes.David Woodhouse1-2/+1
For RWCOMPAT and ROCOMPAT nodes, we should still allow the mount to succeed. Just abandon the summary and fall through to the full scan. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-20[JFFS2] Introduce jffs2_link_node_ref() function to reduce code duplicationDavid Woodhouse1-13/+5
The same sequence of code was repeated in many places, to add a new struct jffs2_raw_node_ref to an eraseblock and adjust the space accounting accordingly. Move it out-of-line. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-11-07[JFFS2] Clean up trailing white spacesThomas Gleixner1-14/+14
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-07[JFFS2] Debug code simplification, update TODOArtem B. Bityutskiy1-1/+1
Simplify the debugging code further. Update the TODO list Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06[JFFS2] Debug code clean up - step 3Artem B. Bityutskiy1-4/+5
Various simplifiactions. printk format corrections. Convert more code to use the new debug functions. Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06[JFFS2] Debug code clean up - step 1Artem B. Bityutskiy1-3/+3
Move debug functions into a seperate source file Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-07-15[JFFS2] Fix node allocation leakThomas Gleixner1-82/+92
In the rare case of failing to write the cleanmarker the allocated node was not freed. Pointed out by Forrest Zhao Initial cleanup by Joern Engel Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Whitespace cleanup. Fix missing debug messageThomas Gleixner1-0/+1
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Fix NOR only compileArtem B. Bityuckiy1-5/+2
Fix the bug that caouses problems when compiling for NOR. We read a newly erased block so we don't need to check ECC. Define jffs2_is_writebuffered as zero if there is no wbuf. Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Fix race problems with wbuf.Artem B. Bityuckiy1-2/+6
Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Forbid to free inode_cache objects if its nlink isn't zero.Artem B. Bityuckiy1-2/+2
Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Prevent ino cache removal for inodes in useDavid Woodhouse1-5/+2
Don't remove inocache for inodes which are in read_inode() or clear_inode() until they're done. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Add support for JFFS2-on-Dataflash devices.Andrew Victor1-3/+10
For Dataflash, can_mark_obsolete = false and the NAND write buffering code (wbuf.c) is used. Since the DataFlash chip will automatically erase pages when writing, the cleanmarkers are not needed - so cleanmarker_oob = false and cleanmarker_size = 0 DataFlash page-sizes are not a power of two (they're multiples of 528 bytes). The SECTOR_ADDR macro (added in the previous core patch) is replaced with a (slower) div/mod version if CONFIG_JFFS2_FS_DATAFLASH is selected. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Core changes required to support JFFS2-on-Dataflash devices.Andrew Victor1-2/+2
DataFlash page-sizes are not a power of two (they're multiples of 528 bytes). There are a few places in JFFS2 code where sector_size is used as a bitmask. A new macro (SECTOR_ADDR) was defined to calculate these sector addresses. For non-DataFlash devices, the original (faster) bitmask operation is still used. In scan.c, the EMPTY_SCAN_SIZE was a constant of 1024. Since this could be larger than the sector size of the DataFlash, this is now basically set to MIN(sector_size, 1024). Addition of a jffs2_is_writebuffered() macro. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-04-17Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+442
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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