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path: root/fs/xfs/xfs_dir2.c
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2008-11-10[XFS] Account for allocated blocks when expanding directoriesDavid Chinner1-0/+6
When we create a directory, we reserve a number of blocks for the maximum possible expansion of of the directory due to various btree splits, freespace allocation, etc. Unfortunately, each allocation is not reflected in the total number of blocks still available to the transaction, so the maximal reservation is used over and over again. This leads to problems where an allocation group has only enough blocks for *some* of the allocations required for the directory modification. After the first N allocations, the remaining blocks in the allocation group drops below the total reservation, and subsequent allocations fail because the allocator will not allow the allocation to proceed if the AG does not have the enough blocks available for the entire allocation total. This results in an ENOSPC occurring after an allocation has already occurred. This results in aborting the directory operation (leaving the directory in an inconsistent state) and cancelling a dirty transaction, which results in a filesystem shutdown. Avoid the problem by reflecting the number of blocks allocated in any directory expansion in the total number of blocks available to the modification in progress. This prevents a directory modification from being aborted part way through with an ENOSPC. SGI-PV: 988144 SGI-Modid: xfs-linux-melb:xfs-kern:32340a Signed-off-by: David Chinner <david@fromorbit.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-07-28[XFS] Zero uninitialised xfs_da_args structure in xfs_dir2.cBarry Naujok1-5/+5
Fixes a problem in the xfs_dir2_remove and xfs_dir2_replace paths which intenally call directory format specific lookup funtions that assume args->cmpresult is zeroed. SGI-PV: 982606 SGI-Modid: xfs-linux-melb:xfs-kern:31268a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
2008-07-28[XFS] XFS: ASCII case-insensitive supportBarry Naujok1-1/+50
Implement ASCII case-insensitive support. It's primary purpose is for supporting existing filesystems that already use this case-insensitive mode migrated from IRIX. But, if you only need ASCII-only case-insensitive support (ie. English only) and will never use another language, then this mode is perfectly adequate. ASCII-CI is implemented by generating hashes based on lower-case letters and doing lower-case compares. It implements a new xfs_nameops vector for doing the hashes and comparisons for all filename operations. To create a filesystem with this CI mode, use: # mkfs.xfs -n version=ci <device> SGI-PV: 981516 SGI-Modid: xfs-linux-melb:xfs-kern:31209a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
2008-07-28[XFS] Return case-insensitive match for dentry cacheBarry Naujok1-2/+38
This implements the code to store the actual filename found during a lookup in the dentry cache and to avoid multiple entries in the dcache pointing to the same inode. To avoid polluting the dcache, we implement a new directory inode operations for lookup. xfs_vn_ci_lookup() stores the correct case name in the dcache. The "actual name" is only allocated and returned for a case- insensitive match and not an actual match. Another unusual interaction with the dcache is not storing negative dentries like other filesystems doing a d_add(dentry, NULL) when an ENOENT is returned. During the VFS lookup, if a dentry returned has no inode, dput is called and ENOENT is returned. By not doing a d_add, this actually removes it completely from the dcache to be reused. create/rename have to be modified to support unhashed dentries being passed in. SGI-PV: 981521 SGI-Modid: xfs-linux-melb:xfs-kern:31208a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
2008-07-28[XFS] Add op_flags field and helpers to xfs_da_argsBarry Naujok1-6/+8
The end of the xfs_da_args structure has 4 unsigned char fields for true/false information on directory and attr operations using the xfs_da_args structure. The following converts these 4 into a op_flags field that uses the first 4 bits for these fields and allows expansion for future operation information (eg. case-insensitive lookup request). SGI-PV: 981520 SGI-Modid: xfs-linux-melb:xfs-kern:31206a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
2008-07-28[XFS] Name operation vector for hash and compareBarry Naujok1-5/+7
Adds two pieces of functionality for the basis of case-insensitive support in XFS: 1. A comparison result enumerated type: xfs_dacmp. It represents an exact match, case-insensitive match or no match at all. This patch only implements different and exact results. 2. xfs_nameops vector for specifying how to perform the hash generation of filenames and comparision methods. In this patch the hash vector points to the existing xfs_da_hashname function and the comparison method does a length compare, and if the same, does a memcmp and return the xfs_dacmp result. All filename functions that use the hash (create, lookup remove, rename, etc) now use the xfs_nameops.hashname function and all directory lookup functions also use the xfs_nameops.compname function. The lookup functions also handle case-insensitive results even though the default comparison function cannot return that. And important aspect of the lookup functions is that an exact match always has precedence over a case-insensitive. So while a case-insensitive match is found, we have to keep looking just in case there is an exact match. In the meantime, the info for the first case-insensitive match is retained if no exact match is found. SGI-PV: 981519 SGI-Modid: xfs-linux-melb:xfs-kern:31205a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
2008-07-28[XFS] Remove unused arg from kmem_free()Denys Vlasenko1-3/+3
kmem_free() function takes (ptr, size) arguments but doesn't actually use second one. This patch removes size argument from all callsites. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31050a Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-04-18[XFS] remove bhv_vname_t and xfs_rename codeBarry Naujok1-34/+28
SGI-PV: 976035 SGI-Modid: xfs-linux-melb:xfs-kern:30804a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-04-10[XFS] remove shouting-indirection macros from xfs_sb.hEric Sandeen1-1/+1
Remove macro-to-small-function indirection from xfs_sb.h, and remove some which are completely unused. SGI-PV: 976035 SGI-Modid: xfs-linux-melb:xfs-kern:30528a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Donald Douwsma <donaldd@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07[XFS] Fix up sparse warnings.David Chinner1-0/+1
These are mostly locking annotations, marking things static, casts where needed and declaring stuff in header files. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30002a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07[XFS] clean up vnode/inode tracingLachlan McIlroy1-1/+1
Simplify vnode tracing calls by embedding function name & return addr in the calling macro. Also do a lot of vnode->inode renaming for consistency, while we're at it. SGI-PV: 970335 SGI-Modid: xfs-linux-melb:xfs-kern:29650a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2007-10-16[XFS] move v_trace from bhv_vnode to xfs_inodeChristoph Hellwig1-1/+1
struct bhv_vnode is on it's way out, so move the trace buffer to the XFS inode. Note that this makes the tracing macros rather misnamed, but this kind of fallout will be fixed up incrementally later on. SGI-PV: 969608 SGI-Modid: xfs-linux-melb:xfs-kern:29498a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2007-10-15[XFS] decontaminate vnode operations from behavior detailsChristoph Hellwig1-4/+2
All vnode ops now take struct xfs_inode pointers and the behaviour related glue is split out into methods of it's own. This required fixing xfs_create/mkdir/symlink to not mess with the inode pointer but rather use a separate boolean for error handling. Thanks to Dave Chinner for that fix. SGI-PV: 969608 SGI-Modid: xfs-linux-melb:xfs-kern:29492a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2007-10-15[XFS] use filldir internallyChristoph Hellwig1-103/+18
Currently xfs has a rather complicated internal scheme to allow for different directory formats in IRIX. This patch rips all code related to this out and pushes useage of the Linux filldir callback into the lowlevel directory code. This does not make the code any less portable because filldir can be used to create dirents of all possible variations (including the IRIX ones as proved by the IRIX binary emulation code under arch/mips/). This patch get rid of an unessecary copy in the readdir path, about 400 lines of code and one of the last two users of the uio structure. This version is updated to deal with dmapi aswell which greatly simplifies the get_dirattrs code. The dmapi part has been tested using the get_dirattrs tools from the xfstest dmapi suite1 with various small and large directories. SGI-PV: 968563 SGI-Modid: xfs-linux-melb:xfs-kern:29478a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2007-07-14[XFS] Reduce shouting by removing unnecessary macros from dir2 code.Christoph Hellwig1-6/+6
SGI-PV: 966505 SGI-Modid: xfs-linux-melb:xfs-kern:28947a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-11-11[XFS] rename uio_read() to xfs_uio_read()Vlad Apostolov1-1/+1
SGI-PV: 957004 SGI-Modid: xfs-linux-melb:xfs-kern:27231a Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-06-20[XFS] Remove version 1 directory code. Never functioned on Linux, justNathan Scott1-233/+158
pure bloat. SGI-PV: 952969 SGI-Modid: xfs-linux-melb:xfs-kern:26251a Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-06-09[XFS] Add parameters to xfs_bmapi() and xfs_bunmapi() to have them reportOlaf Weber1-3/+4
the range spanned by modifications to the in-core extent map. Add XFS_BUNMAPI() and XFS_SWAP_EXTENTS() macros that call xfs_bunmapi() and xfs_swap_extents() via the ioops vector. Change all calls that may modify the in-core extent map for the data fork to go through the ioops vector. This allows a cache of extent map data to be kept in sync. SGI-PV: 947615 SGI-Modid: xfs-linux-melb:xfs-kern:209226a Signed-off-by: Olaf Weber <olaf@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] Update license/copyright notices to match the prefered SGINathan Scott1-25/+11
boilerplate. SGI-PV: 913862 SGI-Modid: xfs-linux:xfs-kern:23903a Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] Remove xfs_macros.c, xfs_macros.h, rework headers a whole lot.Nathan Scott1-14/+7
SGI-PV: 943122 SGI-Modid: xfs-linux:xfs-kern:23901a Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+859
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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