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2008-08-14UBIFS: xattr bugfixesArtem Bityutskiy
Xattr code has not been tested for a while and there were serveral bugs. One of them is using wrong inode in 'ubifs_jnl_change_xattr()'. The other is a deadlock in 'ubifs_setxattr()': the i_mutex is locked in 'cap_inode_need_killpriv()' path, so deadlock happens when 'ubifs_setxattr()' tries to lock it again. Thanks to Zoltan Sogor for finding these bugs. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: remove unneeded checkArtem Bityutskiy
Commit d70b67c8bc72ee23b55381bd6a884f4796692f77 fixed VFS and it never calls FS lookup function in deleted directories now. We may remove corresponding UBIFS check. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: few commentary fixesArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: fix budgeting request alignment in xattr codeZoltan Sogor
Data length has to be aligned in the budgeting request. Code in xattr.c did not do this. Signed-off-by: Zoltan Sogor <weth@inf.u-szeged.hu> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: improve arguments checking in debugging messagesArtem Bityutskiy
Use "if (0) printk()" construct in debugging print macros to make the debugging messages be checked even if debugging is off. This patch also removes some unneeded spaces and blank lines. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: always set i_generation to 0Adrian Hunter
UBIFS does not presently re-use inode numbers, so leaving i_generation zero is most appropriate for now. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: correct spelling of "thrice".Adrian Hunter
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
2008-08-13UBIFS: support splice_writeZoltan Sogor
Signed-off-by: Zoltan Sogor <weth@inf.u-szeged.hu> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: minor tweaks in commitArtem Bityutskiy
No functional changes, just lessen the amount of indentations. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: reserve more space for indexArtem Bityutskiy
At the moment UBIFS reserves twice old index size space for the index. But this is not enough in some cases, because if the indexing node are very fragmented and there are many small gaps, while the dirty index has big znodes - in-the-gaps method would fail. Thus, reserve trise as more, in which case we are guaranteed that we can commit in any case. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: print pid in dump functionArtem Bityutskiy
Useful when something fails and there are many processes racing. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: align inode data to eightArtem Bityutskiy
UBIFS aligns node lengths to 8, so budgeting has to do the same. Well, direntry, inode, and page budgets are already aligned, but not inode data budget (e.g., data in special devices or symlinks). Do this for inode data as well. Also, add corresponding debugging checks. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: improve budgeting checksArtem Bityutskiy
Budgeting is a crucial UBIFS subsystem - add more assertions to improve requests checking. This is not compiled in when UBIFS debugging is disabled. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: correct orphan deletion orderAdrian Hunter
The debug function that checks orphans, does so using the TNC mutex. That means it will not see a correct picture if the inode is removed from the orphan tree before it is removed from TNC. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
2008-08-13UBIFS: fix typos in commentsAdrian Hunter
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
2008-08-13UBIFS: do not union creat_sqnum and del_cmtnoAdrian Hunter
The values in these two fields need to be preserved independently and so a union cannot be used. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
2008-08-13UBIFS: optimize deletionsArtem Bityutskiy
Every time anything is deleted, UBIFS writes the deletion inode node twice - once in 'ubifs_jnl_update()' and the second time in 'ubifs_jnl_write_inode()'. However, the second write is not needed if no commit happened after 'ubifs_jnl_update()'. This patch checks that condition and avoids writing the deletion inode for the second time. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: increment commit number earlierArtem Bityutskiy
Increment the commit number at the beginnig of the commit, instead of doing this after the commit. This is needed for further optimizations. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: remove another unneeded function parameterArtem Bityutskiy
The 'last_reference' parameter of 'pack_inode()' is not really needed because 'inode->i_nlink' may be tested instead. Zap it. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: remove unneeded function parameterArtem Bityutskiy
Simplify 'ubifs_jnl_write_inode()' by removing the 'deletion' parameter which is not really needed because we may test inode->i_nlink and check whether this is a deletion or not. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: do not write orphans backArtem Bityutskiy
Orphan inodes are deleted inodes which will disappear after FS re-mount. There is not need to write orphan inodes back, because they are not needed on the flash media. So optimize orphans a little by not writing them back. Just mark them as clean, free the budget, and report success to VFS. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: make ubifs_ro_mode() not inlineAdrian Hunter
We use ubifs_ro_mode() quite a lot, and not in fast-path, so there is no reason to blow the code up by having it inlined. Also, we usually want R/O mode change to be seen to other CPUs as soon as possible, so when we make this a function call, we will automatically have a memory barrier. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: ensure UBIFS switches to read-only on errorAdrian Hunter
UBI transparently handles write errors by automatically copying and remapping the affected eraseblock. If UBI is unable to do that, for example its pool of eraseblocks reserved for bad block handling is empty, then the error is propagated to UBIFS. UBIFS must protect the media from falling into an inconsistent state by immediately switching to read-only mode. In the case of log updates, this was not being done. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
2008-08-13UBIFS: fix error return in failure modeAdrian Hunter
UBIFS recovery testing debug facility simulates media failures. When simulating an IO error, the error code returned must be -EIO but it was not always if the user switched off the debug recovery testing option at the same time. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
2008-08-13UBIFS: free budget in delete_inode as wellArtem Bityutskiy
Although the inode is marked as clean when it is being deleted, it might stay and be used as orphan, and be marked as dirty. So we have to free the budget when we delete it. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: improve debuggingArtem Bityutskiy
1. Print inode mode in some of debugging messages 2. Add few more useful assertions Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: fix budgeting calculationsArtem Bityutskiy
The 'ubifs_release_dirty_inode_budget()' was buggy and incorrectly freed the budget, which led to not freeing all dirty data budget. This patch fixes that. Also, this patch fixes ubifs_mkdir() which passed 1 in dirty_ino_d, which makes no sense. Well, it is harmless though. Also, add few more useful assertions. And improve few debugging messages. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-08-13UBIFS: print volume name as wellArtem Bityutskiy
We encouredge people to mount using volume name, not device numbers. So print the name of the mounted UBI volume, not just IDs. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-07-26[PATCH] get rid of indirect users of namei.hAl Viro
fs.h needs path.h, not namei.h; nfs_fs.h doesn't need it at all. Several places in the tree needed direct include. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-07-26SL*B: drop kmem cache argument from constructorAlexey Dobriyan
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>
2008-07-15UBIFS: include to compilationArtem Bityutskiy
Add UBIFS to Makefile and Kbuild. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 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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