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2009-01-09[JFFS2] remove junk prototypesArtem Bityutskiy1-3/+0
'rb_prev()', 'rb_next()' and 'rb_replace_node()' are declared in include/linux/rbtree.h, no need for JFFS2 to re-declare them. I believe these are left-overs from the old days when the common RB tree code did not have those call and JFFS2 had private implementation. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-05Merge branch 'master' of ↵David Woodhouse1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: arch/arm/mach-pxa/corgi.c arch/arm/mach-pxa/poodle.c arch/arm/mach-pxa/spitz.c
2009-01-04fs: symlink write_begin allocation context fixNick Piggin1-1/+1
With the write_begin/write_end aops, page_symlink was broken because it could no longer pass a GFP_NOFS type mask into the point where the allocations happened. They are done in write_begin, which would always assume that the filesystem can be entered from reclaim. This bug could cause filesystem deadlocks. The funny thing with having a gfp_t mask there is that it doesn't really allow the caller to arbitrarily tinker with the context in which it can be called. It couldn't ever be GFP_ATOMIC, for example, because it needs to take the page lock. The only thing any callers care about is __GFP_FS anyway, so turn that into a single flag. Add a new flag for write_begin, AOP_FLAG_NOFS. Filesystems can now act on this flag in their write_begin function. Change __grab_cache_page to accept a nofs argument as well, to honour that flag (while we're there, change the name to grab_cache_page_write_begin which is more instructive and does away with random leading underscores). This is really a more flexible way to go in the end anyway -- if a filesystem happens to want any extra allocations aside from the pagecache ones in ints write_begin function, it may now use GFP_KERNEL (rather than GFP_NOFS) for common case allocations (eg. ocfs2_alloc_write_ctxt, for a random example). [kosaki.motohiro@jp.fujitsu.com: fix ubifs] [kosaki.motohiro@jp.fujitsu.com: fix fuse] Signed-off-by: Nick Piggin <npiggin@suse.de> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: <stable@kernel.org> [2.6.28.x] Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Cleaned up the calling convention: just pass in the AOP flags untouched to the grab_cache_page_write_begin() function. That just simplifies everybody, and may even allow future expansion of the logic. - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-10[JFFS2] Clean up fs/jffs2/compr_rubin.cDavid Woodhouse1-56/+64
Triggered by a smaller cleanup from Jianjun Kong <jianjun@zeuux.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-12-10[MTD] update internal API to support 64-bit device sizeAdrian Hunter1-2/+3
MTD internal API presently uses 32-bit values to represent device size. This patch updates them to 64-bits but leaves the external API unchanged. Extending the external API is a separate issue for several reasons. First, no one needs it at the moment. Secondly, whether the implementation is done with IOCTLs, sysfs or both is still debated. Thirdly external API changes require the internal API to be accepted first. Note that although the MTD API will be able to support 64-bit device sizes, existing drivers do not and are not required to do so, although NAND base has been updated. In general, changing from 32-bit to 64-bit values cause little or no changes to the majority of the code with the following exceptions: - printk message formats - division and modulus of 64-bit values - NAND base support - 32-bit local variables used by mtdpart and mtdconcat - naughtily assuming one structure maps to another in MEMERASE ioctl Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-11-06Merge git://git.infradead.org/mtd-2.6Linus Torvalds3-11/+16
* git://git.infradead.org/mtd-2.6: [JFFS2] fix race condition in jffs2_lzo_compress() [MTD] [NOR] Fix cfi_send_gen_cmd handling of x16 devices in x8 mode (v4) [JFFS2] Fix lack of locking in thread_should_wake() [JFFS2] Fix build failure with !CONFIG_JFFS2_FS_WRITEBUFFER [MTD] [NAND] OMAP2: remove duplicated #include
2008-11-05[JFFS2] fix race condition in jffs2_lzo_compress()Geert Uytterhoeven1-6/+9
deflate_mutex protects the globals lzo_mem and lzo_compress_buf. However, jffs2_lzo_compress() unlocks deflate_mutex _before_ it has copied out the compressed data from lzo_compress_buf. Correct this by moving the mutex unlock after the copy. In addition, document what deflate_mutex actually protects. Cc: stable@kernel.org Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Richard Purdie <rpurdie@openedhand.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-31[JFFS2] Fix lack of locking in thread_should_wake()David Woodhouse1-5/+5
The thread_should_wake() function trawls through the list of 'very dirty' eraseblocks, determining whether the background GC thread should wake. Doing this without holding the appropriate locks is a bad idea. OLPC Trac #8615 Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org
2008-10-23[PATCH] fix ->llseek for more directoriesChristoph Hellwig1-1/+2
With this patch all directory fops instances that have a readdir that doesn't take the BKL are switched to generic_file_llseek. Signed-off-by: Christoph Hellwig <hch@lst.de>
2008-10-23[JFFS2] Use d_splice_alias() not d_add() in jffs2_lookup()David Woodhouse1-3/+1
Now that JFFS2 can be exported by NFS, we need to get this right. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-23[JFFS2] Reinstate NFS exportabilityDavid Woodhouse1-0/+48
Now that the readdir/lookup deadlock issues have been dealt with, we can export JFFS2 file systems again. (For now, you have to specify fsid manually; we should add a method to the export_ops to handle that too.) Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-21[JFFS2] Fix build failure with !CONFIG_JFFS2_FS_WRITEBUFFERSteve Glendinning1-0/+2
Build failure introduced by 5bf1723723487ddb0b9c9641b6559da96b27cc93 [JFFS2] Write buffer offset adjustment for NOR-ECC (Sibley) flash Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-18[JFFS2] Write buffer offset adjustment for NOR-ECC (Sibley) flashAlexander Belyakov2-4/+5
After choosing new c->nextblock, don't leave the wbuf offset field occasionally pointing at the start of the next physical eraseblock. This was causing a BUG() on NOR-ECC (Sibley) flash, where we start writing after the cleanmarker. Among other this fix should cover write buffer offset adjustment after flushing the last page of an eraseblock. Signed-off-by: Alexander Belyakov <abelyako@googlemail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-17[JFFS2] Correct parameter names of jffs2_compress() in commentsGeert Uytterhoeven1-2/+2
Make the parameter names of jffs2_compress() in its comments match with the actual implementation Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-09-01CRED: Wrap task credential accesses in the JFFS2 filesystemDavid Howells1-2/+2
Wrap access to task credentials so that they can be separated more easily from the task_struct during the introduction of COW creds. Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id(). Change some task->e?[ug]id to task_e?[ug]id(). In some places it makes more sense to use RCU directly rather than a convenient wrapper; these will be addressed by later patches. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-09-01Merge branch 'master' of ↵David Woodhouse1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2008-09-01[JFFS2] Move JFFS2 config options out of fs/KconfigAlexey Dobriyan1-0/+188
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-23removed unused #include <linux/version.h>'sAdrian Bunk1-1/+0
This patch lets the files using linux/version.h match the files that #include it. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-18[JFFS2] Fill in f_fsid field in jffs2_statfs()David Woodhouse1-0/+2
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-14[JFFS2] Correct symlink name too long error codeAdrian Hunter1-1/+1
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-12[MTD] Define and use MTD_FAIL_ADDR_UNKNOWN instead of 0xffffffffAdrian Hunter1-2/+2
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-01[JFFS2] Fix allocation of summary bufferDavid Woodhouse2-14/+32
We can't use vmalloc for the buffer we use for writing summaries, because some drivers may want to DMA from it. So limit the size to 64KiB and use kmalloc for it instead. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-07-26Merge git://git.infradead.org/mtd-2.6Linus Torvalds4-5/+4
* git://git.infradead.org/mtd-2.6: (57 commits) [MTD] [NAND] subpage read feature as a way to increase performance. CPUFREQ: S3C24XX NAND driver frequency scaling support. [MTD][NAND] au1550nd: remove unused variable [MTD] jedec_probe: Fix SST 16-bit chip detection [MTD][MTDPART] Fix a division by zero bug [MTD][MTDPART] Cleanup and document the erase region handling [MTD][MTDPART] Handle most checkpatch findings [MTD][MTDPART] Seperate main loop from per-partition code in add_mtd_partition [MTD] physmap: resume already suspended chips on failure to suspend [MTD] physmap: Fix suspend/resume/shutdown bugs. [MTD] [NOR] Fix -ETIMEO errors in CFI driver [MTD] [NAND] fsl_elbc_nand: fix section mismatch with CONFIG_MTD_OF_PARTS=y [JFFS2] Use .unlocked_ioctl [MTD] Fix const assignment in the MTD command line partitioning driver [MTD] [NOR] gen_probe: No debug message when debugging is disabled [MTD] [NAND] remove __PPC__ hardcoded address from DiskOnChip drivers [MTD] [MAPS] Remove the bast-flash driver. [MTD] [NAND] fsl_elbc_nand: ecclayout cleanups [MTD] [NAND] fsl_elbc_nand: implement support for flash-based BBT [MTD] [NAND] fsl_elbc_nand: fix OOB workability for large page NAND chips ...
2008-07-26[PATCH] sanitize ->permission() prototypeAl Viro2-2/+2
* kill nameidata * argument; map the 3 bits in ->flags anybody cares about to new MAY_... ones and pass with the mask. * kill redundant gfs2_iop_permission() * sanitize ecryptfs_permission() * fix remaining places where ->permission() instances might barf on new MAY_... found in mask. The obvious next target in that direction is permission(9) folded fix for nfs_permission() breakage from Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-07-26SL*B: drop kmem cache argument from constructorAlexey Dobriyan1-1/+1
Kmem cache passed to constructor is only needed for constructors that are themselves multiplexeres. Nobody uses this "feature", nor does anybody uses passed kmem cache in non-trivial way, so pass only pointer to object. Non-trivial places are: arch/powerpc/mm/init_64.c arch/powerpc/mm/hugetlbpage.c This is flag day, yes. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Christoph Lameter <cl@linux-foundation.org> Cc: Jon Tollefson <kniht@linux.vnet.ibm.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Matt Mackall <mpm@selenic.com> [akpm@linux-foundation.org: fix arch/powerpc/mm/hugetlbpage.c] [akpm@linux-foundation.org: fix mm/slab.c] [akpm@linux-foundation.org: fix ubifs] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-11[JFFS2] Use .unlocked_ioctlStoyan Gaydarov4-5/+4
This changes the .ioctl to the .unlocked_ioctl version. Signed-off-by: Stoyan Gaydarov <stoyboyker@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-05-01Merge git://git.infradead.org/mtd-2.6Linus Torvalds14-68/+108
* git://git.infradead.org/mtd-2.6: [MTD][NOR] Add physical address to point() method [JFFS2] Track parent inode for directories (for NFS export) [JFFS2] Invert last argument of jffs2_gc_fetch_inode(), make it boolean. [JFFS2] Quiet lockdep false positive. [JFFS2] Clean up jffs2_alloc_inode() and jffs2_i_init_once() [MTD] Delete long-unused jedec.h header file. [MTD] [NAND] at91_nand: use at91_nand_{en,dis}able consistently.
2008-05-01[MTD][NOR] Add physical address to point() methodJared Hulbert3-10/+13
Adding the ability to get a physical address from point() in addition to virtual address. This physical address is required for XIP of userspace code from flash. Signed-off-by: Jared Hulbert <jaredeh@gmail.com> Reviewed-by: Jörn Engel <joern@logfs.org> Acked-by: Nicolas Pitre <nico@cam.org> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-05-01[JFFS2] Track parent inode for directories (for NFS export)David Woodhouse12-42/+70
To support NFS export, we need to know the parent inode of directories. Rather than growing the jffs2_inode_cache structure, share space with the nlink field -- which was always set to 1 for directories anyway. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-05-01[JFFS2] Invert last argument of jffs2_gc_fetch_inode(), make it boolean.David Woodhouse4-7/+8
We don't actually care about nlink; we only care whether the inode in question is unlinked or not. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-05-01[JFFS2] Quiet lockdep false positive.David Woodhouse2-3/+10
Don't hold f->sem while calling into jffs2_do_create(). It makes lockdep unhappy, and we don't really need it -- the _reason_ it's a false positive is because nobody else can see this inode yet and so nobody will be trying to lock it anyway. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-05-01[JFFS2] Clean up jffs2_alloc_inode() and jffs2_i_init_once()David Woodhouse1-7/+8
Ditch a couple of pointless casts from void *, and use the normal variable name 'f' for jffs2_inode_info pointers -- especially since it actually shows up in lockdep reports. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-30fs: replace remaining __FUNCTION__ occurrencesHarvey Harrison2-6/+6
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-23[JFFS2] Introduce dbg_readinode2 log level, use it to shut read_dnode() upDavid Woodhouse2-7/+14
We haven't seen bugs in this for a while now, since the rewrite. No need to be _quite_ so verbose... Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-23[JFFS2] Fix jffs2_reserve_space() when all blocks are pending erasure.David Woodhouse2-2/+11
When _all_ the blocks were on the erase_pending_list, we could't find a block to GC from but there was no _actually_ free space, and jffs2_reserve_space() would get a little unhappy. Handle this case by returning -EAGAIN from jffs2_garbage_collect_pass(). There are two callers of that function -- jffs2_flush_wbuf_gc(), which will interpret it as an error and flush the writebuffer by other means, and jffs2_reserve_space(), which we modify to respond to -EAGAIN with an immediate call to jffs2_erase_pending_blocks() and another run round the loop. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-23[JFFS2] Add erase_checking_list to hold blocks being marked.David Woodhouse4-4/+25
Just to keep the debug code happy when it's adding all the blocks up. Otherwise, they disappear for a while while the locks are dropped to check them and write the cleanmarker. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-23[JFFS2] Return values of jffs2_block_check_erase error pathsAnders Grafström1-1/+6
It looks the error paths in jffs2_block_check_erase() have wrong return values. A block that failed to be erased never gets marked as bad. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-23[JFFS2] Finally remove redundant ref->__totlen field.David Woodhouse1-1/+1
Haven't had any complaints about it recently, despite having the test code enabled to verify that the calculated length is correct. Kill it off, just by #undef TEST_TOTLEN for now; removing it for real can come a little later. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-23[JFFS2] Honour TEST_TOTLEN macro in debugging code. ref->__totlen is going!David Woodhouse1-1/+4
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-23[JFFS2] Add paranoia debugging for superblock countsDavid Woodhouse2-3/+136
The problem fixed in commit 014b164e1392a166fe96e003d2f0e7ad2e2a0bb7 (space leak with in-band cleanmarkers) would have been caught a lot quicker if our paranoid debugging mode had included adding up the size counts from all the eraseblocks and comparing the totals with the counts in the superblock. Add that. Make jffs2_mark_erased_block() file the newly-erased block on the free_list before calling the debug function, to make it happy. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22[JFFS2] Fix free space leak with in-band cleanmarkersDavid Woodhouse1-10/+8
We were accounting for the cleanmarker by calling jffs2_link_node_ref() (without locking!), which adjusted both superblock and per-eraseblock accounting, subtracting the size of the cleanmarker from {jeb,c}->free_size and adding it to {jeb,c}->used_size. But only _then_ were we adding the size of the newly-erased block back to the superblock counts, and we were adding each of jeb->{free,used}_size to the corresponding superblock counts. Thus, the size of the cleanmarker was effectively subtracted from the superblock's free_size _twice_. Fix this, by always adding a full eraseblock size to c->free_size when we've erased a block. And call jffs2_link_node_ref() under the proper lock, while we're at it. Thanks to Alexander Yurchenko and/or Damir Shayhutdinov for (almost) pinpointing the problem. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22[JFFS2] Self-sufficient #includes in jffs2_fs_i.h: include <linux/mutex.h>David Woodhouse1-1/+1
... instead of <linux/semaphore.h> which we don't need any more anyway. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22[JFFS2] semaphore->mutex conversionDavid Woodhouse14-167/+168
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22[JFFS2] add write verify on dataflash.michael1-0/+12
Add the write verification buffer to the dataflash. The mtd_dataflash has the CONFIG_DATAFLASH_WRITE_VERIFY so is better a change to Kconfig. Signed-off-by: Michael Trimarchi <trimarchimichael@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22[JFFS2] fix sparse warnings in gc.cDavid Woodhouse1-1/+1
fs/jffs2/gc.c:1147:29: warning: symbol 'jeb' shadows an earlier one fs/jffs2/gc.c:1084:89: originally declared here fs/jffs2/gc.c:1197:29: warning: symbol 'jeb' shadows an earlier one fs/jffs2/gc.c:1084:89: originally declared here Rename the unused 'jeb' argument to avoid this. We could potentially remove the argument, but GCC should be doing that anyway. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22[JFFS2] fix sparse warning in write.cHarvey Harrison1-1/+1
fs/jffs2/write.c:585:28: warning: symbol 'fd' shadows an earlier one fs/jffs2/write.c:536:27: originally declared here No need to redeclare fd, use the original one, after this point, fd is always reassigned before it used again. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22[JFFS2] Fix sparse warning in nodemgmt.cDavid Woodhouse1-1/+0
fs/jffs2/nodemgmt.c:60:8: warning: symbol 'ret' shadows an earlier one fs/jffs2/nodemgmt.c:45:6: originally declared here (reported by Harvey Harrison) Just remove the offending declaration of 'int ret' and use the earlier one. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22[JFFS2] include function prototype for jffs2_ioctlHarvey Harrison1-0/+1
fs/jffs2/ioctl.c:14:5: warning: symbol 'jffs2_ioctl' was not declared. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-04-22Merge branch 'master' of ↵David Woodhouse3-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2008-04-18Convert asm/semaphore.h users to linux/semaphore.hMatthew Wilcox2-2/+2
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
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