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* fs: icache RCU free inodesNick Piggin2011-01-071-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | RCU free the struct inode. This will allow: - Subsequent store-free path walking patch. The inode must be consulted for permissions when walking, so an RCU inode reference is a must. - sb_inode_list_lock to be moved inside i_lock because sb list walkers who want to take i_lock no longer need to take sb_inode_list_lock to walk the list in the first place. This will simplify and optimize locking. - Could remove some nested trylock loops in dcache code - Could potentially simplify things a bit in VM land. Do not need to take the page lock to follow page->mapping. The downsides of this is the performance cost of using RCU. In a simple creat/unlink microbenchmark, performance drops by about 10% due to inability to reuse cache-hot slab objects. As iterations increase and RCU freeing starts kicking over, this increases to about 20%. In cases where inode lifetimes are longer (ie. many inodes may be allocated during the average life span of a single inode), a lot of this cache reuse is not applicable, so the regression caused by this patch is smaller. The cache-hot regression could largely be avoided by using SLAB_DESTROY_BY_RCU, however this adds some complexity to list walking and store-free path walking, so I prefer to implement this at a later date, if it is shown to be a win in real situations. I haven't found a regression in any non-micro benchmark so I doubt it will be a problem. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
* convert remaining ->clear_inode() to ->evict_inode()Al Viro2010-08-091-2/+5
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* remove inode_setattrChristoph Hellwig2010-08-091-3/+0
| | | | | | | | | | | | | | | | | | | Replace inode_setattr with opencoded variants of it in all callers. This moves the remaining call to vmtruncate into the filesystem methods where it can be replaced with the proper truncate sequence. In a few cases it was obvious that we would never end up calling vmtruncate so it was left out in the opencoded variant: spufs: explicitly checks for ATTR_SIZE earlier btrfs,hugetlbfs,logfs,dlmfs: explicitly clears ATTR_SIZE earlier ufs: contains an opencoded simple_seattr + truncate that sets the filesize just above In addition to that ncpfs called inode_setattr with handcrafted iattrs, which allowed to trim down the opencoded variant. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* pass writeback_control to ->write_inodeChristoph Hellwig2010-03-051-1/+1
| | | | | | | | | | This gives the filesystem more information about the writeback that is happening. Trond requested this for the NFS unstable write handling, and other filesystems might benefit from this too by beeing able to distinguish between the different callers in more detail. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* kill I_LOCKChristoph Hellwig2009-12-171-3/+3
| | | | | | | | After I_SYNC was split from I_LOCK the leftover is always used together with I_NEW and thus superflous. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ntfs: use is_power_of_2() function for clarity.Robert P. J. Day2009-06-161-1/+2
| | | | | | | Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Cc: Anton Altaparmakov <aia21@cantab.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ntfs: remove private wrapper of endian helpersHarvey Harrison2009-04-011-2/+1
| | | | | | | | | | The base versions handle constant folding now and are shorter than these private wrappers, use them directly. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Anton Altaparmakov <aia21@cantab.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ntfs: don't NULL i_opAl Viro2009-01-051-3/+0
| | | | | | | it's already set to empty table (and no, ntfs doesn't have any explicit checks for NULL ->i_op or NULL ->i_fop) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* NTFS: Fix a mount time deadlock.Anton Altaparmakov2007-10-121-3/+0
| | | | | | | | | | | | | | | | | | | | | | Big thanks go to Mathias Kolehmainen for reporting the bug, providing debug output and testing the patches I sent him to get it working. The fix was to stop calling ntfs_attr_set() at mount time as that causes balance_dirty_pages_ratelimited() to be called which on systems with little memory actually tries to go and balance the dirty pages which tries to take the s_umount semaphore but because we are still in fill_super() across which the VFS holds s_umount for writing this results in a deadlock. We now do the dirty work by hand by submitting individual buffers. This has the annoying "feature" that mounting can take a few seconds if the journal is large as we have clear it all. One day someone should improve on this by deferring the journal clearing to a helper kernel thread so it can be done in the background but I don't have time for this at the moment and the current solution works fine so I am leaving it like this for now. Signed-off-by: Anton Altaparmakov <aia21@cantab.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ntfs_init_locked_inode(): fix array indexingAndrew Morton2007-05-311-1/+1
| | | | | | | | | | | | | Local variable `i' is a byte-counter. Don't use it as an index into an array of le32's. Reported-by: "young dave" <hidave.darkstar@gmail.com> Cc: "Christoph Lameter" <clameter@sgi.com> Acked-by: Anton Altaparmakov <aia21@cantab.net> Cc: <stable@kernel.org> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* header cleaning: don't include smp_lock.h when not usedRandy Dunlap2007-05-081-1/+0
| | | | | | | | | | | | Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* NTFS: 2.1.28 - Fix deadlock reported by Sergey Vlasov due to ntfs_put_inode().Anton Altaparmakov2007-01-181-56/+13
| | | | | | | | | - Fix deadlock in fs/ntfs/inode.c::ntfs_put_inode(). Thanks to Sergey Vlasov for the report and detailed analysis of the deadlock. The fix involved getting rid of ntfs_put_inode() altogether and hence NTFS no longer has a ->put_inode super operation. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* [PATCH] slab: remove SLAB_NOFSChristoph Lameter2006-12-071-2/+2
| | | | | | | | SLAB_NOFS is an alias of GFP_NOFS. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fs/ntfs: Conversion to generic booleanRichard Knutsson2006-10-011-5/+5
| | | | | | | | | Conversion of booleans to: generic-boolean.patch (2006-08-23) Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se> Signed-off-by: Anton Altaparmakov <aia21@cantab.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] inode-diet: Eliminate i_blksize from the inode structureTheodore Ts'o2006-09-271-4/+0
| | | | | | | | | | | | | | | | This eliminates the i_blksize field from struct inode. Filesystems that want to provide a per-inode st_blksize can do so by providing their own getattr routine instead of using the generic_fillattr() function. Note that some filesystems were providing pretty much random (and incorrect) values for i_blksize. [bunk@stusta.de: cleanup] [akpm@osdl.org: generic_fillattr() fix] Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fs: Removing useless castsPanagiotis Issaris2006-09-271-1/+1
| | | | | | | | | | | * Removing useless casts * Removing useless wrapper * Conversion from kmalloc+memset to kzalloc Signed-off-by: Panagiotis Issaris <takis@issaris.org> Acked-by: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] lockdep: annotate NTFS locking rulesIngo Molnar2006-07-031-0/+33
| | | | | | | | | | | | | | | | NTFS uses lots of type-opaque objects which acquire their true identity runtime - so the lock validator needs to be helped in a couple of places to figure out object types. Many thanks to Anton Altaparmakov for giving lots of explanations about NTFS locking rules. Has no effect on non-lockdep kernels. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Anton Altaparmakov <aia21@cantab.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* NTFS: Semaphore to mutex conversion.Ingo Molnar2006-03-231-5/+5
| | | | | | | | | The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: Add a missing call to flush_dcache_mft_record_page() inAnton Altaparmakov2006-03-231-3/+6
| | | | | | fs/ntfs/inode.c::ntfs_write_inode(). Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: Fix a bug in fs/ntfs/inode.c::ntfs_read_locked_index_inode() where weAnton Altaparmakov2006-03-231-15/+11
| | | | | | | forgot to update a temporary variable so loading index inodes which have an index allocation attribute failed. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: Add support for sparse files which have a compression unit of 0.Anton Altaparmakov2006-03-231-23/+45
| | | | Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: - Cope with attribute list attribute having invalid flags.Anton Altaparmakov2006-02-241-10/+39
| | | | | | | | | Windows copes with this and even chkdsk does not detect or fix this so we have to cope with it, too. Thanks to Pawel Kot for reporting the problem. - Miscellaneous updates to layout.h. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* [PATCH] replace inode_update_time with file_update_timeChristoph Hellwig2006-01-101-1/+19
| | | | | | | | | | | | | | | To allow various options to work per-mount instead of per-sb we need a struct vfsmount when updating ctime and mtime. This preparation patch replaces the inode_update_time routine with a file_update_atime routine so we can easily get at the vfsmount. (and the file makes more sense in this context anyway). Also get rid of the unused second argument - we always want to update the ctime when calling this routine. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Anton Altaparmakov <aia21@cantab.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_semJes Sorensen2006-01-091-4/+4
| | | | | | | | | | | | | This patch converts the inode semaphore to a mutex. I have tested it on XFS and compiled as much as one can consider on an ia64. Anyway your luck with it might be different. Modified-by: Ingo Molnar <mingo@elte.hu> (finished the conversion) Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* NTFS: Enable ATTR_SIZE attribute changes in ntfs_setattr(). This completesAnton Altaparmakov2005-10-041-8/+15
| | | | | | | | | | | the initial implementation of file truncation. Now both open(2)ing a file with the O_TRUNC flag and the {,f}truncate(2) system calls will resize a file appropriately. The limitations are that only uncompressed and unencrypted files are supported. Also, there is only very limited support for highly fragmented files (the ones whose $DATA attribute is split into multiple attribute extents). Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: Implement fs/ntfs/inode.[hc]::ntfs_truncate(). It only supportsAnton Altaparmakov2005-10-041-33/+458
| | | | | | uncompressed and unencrypted files. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: Fix ntfs_{read,write}page() to cope with concurrent truncates better.Anton Altaparmakov2005-09-191-4/+5
| | | | Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: Fixup handling of sparse, compressed, and encrypted attributes inAnton Altaparmakov2005-09-081-101/+114
| | | | | | fs/ntfs/inode.c::ntfs_read_locked_{,attr_,index_}inode(). Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: Truncate {a,c,m}time to the ntfs supported time granularity whenAnton Altaparmakov2005-09-081-5/+7
| | | | | | updating the times in the inode in ntfs_setattr(). Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: Remove spurious void pointer casts from fs/ntfs/.Pekka Enberg2005-05-271-3/+2
| | | | | Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: Correct sparse file handling. The compressed values need to beAnton Altaparmakov2005-05-051-90/+82
| | | | | | | | checked and set in the ntfs inode as done for compressed files and the compressed size needs to be used for vfs inode->i_blocks instead of the allocated size, again, as done for compressed files. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: Fix printk format warnings on ia64. (Randy Dunlap)Randy Dunlap2005-05-051-6/+6
| | | | | Signed-off-by: Randy Dunlap <rddunlap@osdl.org> Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: - Set the ntfs_inode->allocated_size to the real allocated size in theAnton Altaparmakov2005-05-051-174/+170
| | | | | | | | mft record for resident attributes (fs/ntfs/inode.c). - Small readability cleanup to use "a" instead of "ctx->attr" everywhere (fs/ntfs/inode.c). Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: - Add disable_sparse mount option together with a per volume sparseAnton Altaparmakov2005-05-051-1/+4
| | | | | | | | enable bit which is set appropriately and a per inode sparse disable bit which is preset on some system file inodes as appropriate. - Enforce that sparse support is disabled on NTFS volumes pre 3.0. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: Use i_size_read() in fs/ntfs/inode.c once and then use the cached valueAnton Altaparmakov2005-05-051-11/+14
| | | | | | afterwards when reading the size of the bitmap inode. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* NTFS: - In fs/ntfs/compress.c, use i_size_read() at the start and then use theAnton Altaparmakov2005-05-051-0/+1
| | | | | | | | | | cached value everywhere. Cache the initialized_size in the same way and protect the critical region where the two sizes are read using the new size_lock of the ntfs inode. - Add the new size_lock to the ntfs_inode structure (fs/ntfs/inode.h) and initialize it (fs/ntfs/inode.c). Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* Linux-2.6.12-rc2Linus Torvalds2005-04-161-0/+2616
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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