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2005-05-23[JFFS2] Fix race problems with wbuf.Artem B. Bityuckiy2-10/+10
Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Prevent deadlock when flushing write bufferArtem B. Bityuckiy1-1/+3
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. Bityuckiy2-4/+4
Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Improve garbage collector block selectionArtem B. Bityuckiy1-1/+7
Make sure the erase_pending_wbuf_list's blocks are taken into account when picking the block to GC. Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Use function to manipulate superblock dirty flagArtem B. Bityuckiy1-2/+2
Use the corresponding function to mark Superblock dirty instead of doing it directly. Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Add symlink caching support.Artem B. Bityuckiy5-70/+117
Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Fix NOR specific scan BUG Artem B. Bityuckiy2-8/+12
Fix fairly sad NOR-specific bug - during FS building ic->scan_dents isn't zero, but jffs2_mark_node_obsolete() migt be called it tries to finde the ic corresponding to ref - this requires ic->scan_dents = 0. 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 Woodhouse5-16/+24
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] Fix node lookupArtem B. Bityuckiy1-3/+3
Look the ref->next_phys field instead of ->next_in_ino to determine if the block has more then one node. Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Use a single config option for write buffer supportAndrew Victor8-68/+33
This patch replaces the current CONFIG_JFFS2_FS_NAND, CONFIG_JFFS2_FS_NOR_ECC and CONFIG_JFFS2_FS_DATAFLASH with a single configuration option - CONFIG_JFFS2_FS_WRITEBUFFER. The only functional change of this patch is that the slower div/mod calculations for SECTOR_ADDR(), PAGE_DIV() and PAGE_MOD() are now always used when CONFIG_JFFS2_FS_WRITEBUFFER is enabled. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Add support for JFFS2-on-Dataflash devices.Andrew Victor7-14/+94
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 Victor5-44/+53
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>
2005-05-23[JFFS2] Prevent deadlock during write buffer recoveryEstelle Hammache1-4/+8
Prevent deadlock when checking erased block for space allocation during wbuf recovery. Signed-off-by: Estelle Hammache <estelle.hammache@st.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Remove NAND dependencies for NOR FLASHDavid Woodhouse1-1/+7
make NAND code work on NOR flash again Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Code cleanup Estelle Hammache3-47/+28
Code beautification and block filing correction for optimization. Signed-off-by: Estelle Hammache <estelle.hammache@st.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Fix refile of blocks due to write failure. Estelle Hammache1-3/+6
avoid segfault when nextblock was refiled because of a write failure - avoid filing blocks on the clean list when they have wasted space Signed-off-by: Estelle Hammache <estelle.hammache@st.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Fix block refilingEstelle Hammache1-18/+47
- block refiling when writing directly to flash a buffer which is bigger than wbuf - retry cases for flushing wbuf Signed-off-by: Estelle Hammache <estelle.hammache@st.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Fix write buffer retry caseEstelle Hammache1-1/+32
Correction of retry case to avoid silent failure of rmdir when jffs2_wbuf_recover GCs the previous entry (+ corresponding dnode case). Signed-off-by: Estelle Hammache <estelle.hammache@st.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-23[JFFS2] Avoid warning for empty filesystemsTodd Poynor1-2/+2
Avoid "Eep. No valid nodes for ino #1" message for just-created filesystem. Signed-off-by: Todd Poynor <tpoynor@mvista.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-05-18[PATCH] Avoid console spam with ext3 aborted journal.Stephen Tweedie1-1/+9
Avoid console spam with ext3 aborted journal. ext3 usually reports error conditions that it detects in its environment. But when its journal gets aborted due to such errors, it can sometimes continue to report that condition forever, spamming the console to such an extent that the initial first cause of the journal abort can be lost. When the journal aborts, we put the filesystem into readonly mode. Most subsequent filesystem operations will get rejected immediately by checks for MS_RDONLY either in the filesystem or in the VFS. But some paths do not have such checks --- for example, if we continue to write to a file handle that was opened before the fs went readonly. (We only check for the ROFS condition when the file is first opened.) In these cases, we can continue to generate log errors similar to EXT3-fs error (device $DEV) in start_transaction: Journal has aborted for each subsequent write. There is really no point in generating these errors after the initial error has been fully reported. Specifically, if we're starting a completely new filesystem operation, and the filesystem is *already* readonly (ie. the ext3 layer has already detected and handled the underlying jbd abort), and we see an EROFS error, then there is simply no point in reporting it again. Signed-off-by: Stephen Tweedie <sct@redhat.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17[PATCH] block_read_full_page() get_block() error handling fixAndrew Morton1-2/+6
If block_read_full_page() detects an error when running get_block() it will run SetPageError(), then it will zero out the block in pagecache and will mark the buffer_head uptodate. So at the end of readahead we end up with a non-uptodate pagecache page which is marked PageError. But it has uptodate buffers. The pagefault code will run ClearPageError, will launch readpage a second time and block_read_full_page() will notice the uptodate buffers and will mark the page uptodate as well. We end up with an uptodate, !PageError page full of zeros and the error is lost. (It seems a little odd that filemap_nopage() runs ClearPageError(). I guess all of this adds up to meaning that for each attempted access to the page, the pagefault handler will retry the I/O. Which is good and bad. If the app is ignoring SIGBUS for some reason we could get a lot of back-to-back I/O errors.) Fix it by not marking the pagecache buffer_head as uptodate if the attempt to map that buffer to a disk block failed. Credit-to: Qu Fuping <fs@ercist.iscas.ac.cn> For reporting the bug and identifying its source. Signed-off-by: Qu Fuping <fs@ercist.iscas.ac.cn> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17[PATCH] fix impossible VmallocChunkHugh Dickins1-2/+12
VmallocTotal: 34359738367 kB VmallocUsed: 266288 kB VmallocChunk: 18014366299193295 kB is unsettling - x86_64 and some other architectures keep a separate address range for modules in vmalloc's vmlist, which /proc/meminfo should pass over. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-16[PATCH] fix Linux kernel ELF core dump privilege elevationGreg Kroah-Hartman1-2/+2
As reported by Paul Starzetz <ihaquer@isec.pl> Reference: CAN-2005-1263 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-06[PATCH] revert msdos partitioning fixAndrew Morton1-5/+0
This change from March 3rd causes the partition parsing code to ignore partitions which have a signature byte of zero. Turns out that more people have such partitions than we expected, and their device numbering is coming up wrong in post-2.6.11 kernels. So revert the change while we think about the problem a bit more. Cc: Andries Brouwer <Andries.Brouwer@cwi.nl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] fs/udf/udftime.c: fix off by one errorAdrian Bunk1-1/+1
This patch fixes an off by one error found by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] comments on locking of task->commPaolo 'Blaisorblade' Giarrusso1-1/+3
Add some comments about task->comm, to explain what it is near its definition and provide some important pointers to its uses. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] reiserfs: use NULL instead of 0Randy.Dunlap1-1/+1
Use NULL instead of 0 for pointer (sparse warning): fs/reiserfs/namei.c:611:50: warning: Using plain integer as NULL pointer Signed-off-by: Randy Dunlap <rddunlap@osdl.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] make some things staticAdrian Bunk16-32/+45
This patch makes some needlessly global identifiers static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Arjan van de Ven <arjanv@infradead.org> Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] revert ext3-writepages-support-for-writeback-modeAndrew Morton2-57/+1
This had a fatal lock ranking bug: we do journal_start outside mpage_writepages()'s lock_page(). Revert the whole thing, think again. Credit-to: Jan Kara <jack@suse.cz> For identifying the bug. Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] remove do_sync parameter from __invalidate_deviceChristoph Hellwig2-19/+4
The only caller that ever sets it can call fsync_bdev itself easily. Also update some comments. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] remove BK documentationAdrian Bunk1-3/+3
There's no longer a reason to document the obsolete BK usage. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] __block_write_full_page() simplificationAndrew Morton1-9/+1
The `last_bh' logic probably isn't worth much. In those situations where only the front part of the page is being written out we will save some looping but in the vastly more common case of an all-page writeout if just adds more code. Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] __block_write_full_page speedupAndrew Morton1-5/+1
Remove all those get_bh()'s and put_bh()'s by extending lock_page() to cover the troublesome regions. (get_bh() and put_bh() happen every time whereas contention on a page's lock in there happens basically never). Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] __block_write_full_page race fixNick Piggin1-5/+13
When running fsstress -v -d $DIR/tmp -n 1000 -p 1000 -l 2 on an ext2 filesystem with 1024 byte block size, on SMP i386 with 4096 byte page size over loopback to an image file on a tmpfs filesystem, I would very quickly hit BUG_ON(!buffer_async_write(bh)); in fs/buffer.c:end_buffer_async_write It seems that more than one request would be submitted for a given bh at a time. What would happen is the following: 2 threads doing __mpage_writepages on the same page. Thread 1 - lock the page first, and enter __block_write_full_page. Thread 1 - (eg.) mark_buffer_async_write on the first 2 buffers. Thread 1 - set page writeback, unlock page. Thread 2 - lock page, wait on page writeback Thread 1 - submit_bh on the first 2 buffers. => both requests complete, none of the page buffers are async_write, end_page_writeback is called. Thread 2 - wakes up. enters __block_write_full_page. Thread 2 - mark_buffer_async_write on (eg.) the last buffer Thread 1 - finds the last buffer has async_write set, submit_bh on that. Thread 2 - submit_bh on the last buffer. => oops. So change __block_write_full_page to explicitly keep track of the last bh we need to issue, so we don't touch anything after issuing the last request. Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] fix race in __block_prepare_writeNick Piggin1-4/+6
Fix a race where __block_prepare_write can leak out an in-flight read against a bh if get_block returns an error. This can lead to the page becoming unlocked while the buffer is locked and the read still in flight. __mpage_writepage BUGs on this condition. BUG sighted on a 2-way Itanium2 system with 16K PAGE_SIZE running fsstress -v -d $DIR/tmp -n 1000 -p 1000 -l 2 where $DIR is a new ext2 filesystem with 4K blocks that is quite small (causing get_block to fail often with -ENOSPC). Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] uml: hostfs failed mount handlingJeff Dike1-3/+7
This cleans up the error handling and fixes a crash if a hostfs mount fails. Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[PATCH] avoid -ENOMEM due reclaimable slab cachesAndrea Arcangeli2-2/+2
This makes sure that reclaimable buffer headers and reclaimable inodes are accounted properly during the overcommit checks. Signed-off-by: Andrea Arcangeli <andrea@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05[XFS] Cleanup use of loff_t vs xfs_off_t in the core code.Nathan Scott4-19/+19
SGI Modid: xfs-linux:xfs-kern:22378a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-05-05[XFS] Use the right offset when ensuring a delayed allocate conversion has ↵Nathan Scott4-46/+56
covered the offset originally requested. Can cause data corruption when multiple processes are performing writeout on different areas of the same file. Quite difficult to hit though. SGI Modid: xfs-linux:xfs-kern:22377a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com> .
2005-05-05[XFS] Do not do delalloc conversion on pages beyond EOF ever, not just sometimesNathan Scott1-5/+3
SGI Modid: xfs-linux:xfs-kern:22376a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-05-05[XFS] remove noisy printk at vnode trace allocationEric Sandeen1-1/+0
SGI Modid: xfs-linux:xfs-kern:191625a Signed-off-by: Eric Sandeen <sandeen@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-05-05[XFS] stop background sync from waiting for in-use inodesDaniel Moore1-1/+4
SGI Modid: xfs-linux:xfs-kern:191586a Signed-off-by: Daniel Moore <dxm@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-05-05[XFS] Disable the combination of XFS direct IO and AIO until the IO completionNathan Scott2-2/+44
handling for unwritten extents can be moved out of interrupt context. SGI Modid: xfs-linux:xfs-kern:22343a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-05-05[XFS] Resolve an issue with xfsbufd not getting along with swsusp.Nathan Scott1-2/+9
SGI Modid: xfs-linux:xfs-kern:22342a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-05-05[XFS] Fix up warningsEric Sandeen2-4/+4
SGI Modid: xfs-linux:xfs-kern:191411a Signed-off-by: Eric Sandeen <sandeen@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-05-05[XFS] Allow initial XFS delayed allocation size to be increased beyond 64KB.Nathan Scott2-25/+48
SGI Modid: xfs-linux:xfs-kern:22261a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-05-05[XFS] Add ATTR_NOLOCK for xfs_setattr to indicate that XFS_IOLOCK is heldDean Roehrich2-2/+10
SGI Modid: xfs-linux:xfs-kern:190711a Signed-off-by: Dean Roehrich <roehrich@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com> .
2005-05-05[XFS] Enable XFS_VNODE_TRACEEric Sandeen2-2/+3
SGI Modid: xfs-linux:xfs-kern:190725a Signed-off-by: Eric Sandeen <sandeen@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com> .
2005-05-05[XFS] Fix up uses of nlink_t incorrectly restricting us to 2^16 links for ↵Nathan Scott6-7/+8
some platforms SGI Modid: xfs-linux:xfs-kern:22032a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-05-05[XFS] Block mount attempts for filesystems with version 1 directories.Nathan Scott1-0/+9
SGI Modid: xfs-linux:xfs-kern:21937a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
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