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path: root/fs/ext4/mballoc.c
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* ext4: Replace hackish ext4_mb_poll_new_transaction with commit callbackTheodore Ts'o2008-10-161-70/+15
| | | | | | | | | | | The multiblock allocator needs to be able to release blocks (and issue a blkdev discard request) when the transaction which freed those blocks is committed. Previously this was done via a polling mechanism when blocks are allocated or freed. A much better way of doing things is to create a jbd2 callback function and attaching the list of blocks to be freed directly to the transaction structure. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Remove compile warnings when building w/o CONFIG_PROC_FSManish Katiyar2008-10-171-1/+6
| | | | | Signed-off-by: Manish Katiyar <mkatiyar@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: let the block device know when unused blocks can be discardedTheodore Ts'o2008-10-161-0/+7
| | | | | | | Let the block device know when unused blocks can be discarded, using the new sb_issue_discard() interface. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Use an rbtree for tracking blocks freed during transaction.Aneesh Kumar K.V2008-10-161-67/+117
| | | | | | | | | With this patch we track the block freed during a transaction using red-black tree. We also make sure contiguous blocks freed are collected in one node in the tree. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
* ext4: Free ext4_prealloc_space using kmem_cache_freeAneesh Kumar K.V2008-10-131-1/+1
| | | | | | | | | We should use kmem_cache_free to free memory allocated via kmem_cache_alloc Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
* ext4: fix initialization of UNINIT bitmap blocksFrederic Bohe2008-10-101-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | This fixes a bug which caused on-line resizing of filesystems with a 1k blocksize to fail. The root cause of this bug was the fact that if an uninitalized bitmap block gets read in by userspace (which e2fsprogs does try to avoid, but can happen when the blocksize is less than the pagesize and an adjacent blocks is read into memory) ext4_read_block_bitmap() was erroneously depending on the buffer uptodate flag to decide whether it needed to initialize the bitmap block in memory --- i.e., to set the standard set of blocks in use by a block group (superblock, bitmaps, inode table, etc.). Essentially, ext4_read_block_bitmap() assumed it was the only routine that might try to read a block containing a block bitmap, which is simply not true. To fix this, ext4_read_block_bitmap() and ext4_read_inode_bitmap() must always initialize uninitialized bitmap blocks. Once a block or inode is allocated out of that bitmap, it will be marked as initialized in the block group descriptor, so in general this won't result any extra unnecessary work. Signed-off-by: Frederic Bohe <frederic.bohe@bull.net> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Remove old legacy block allocatorTheodore Ts'o2008-10-101-20/+2
| | | | Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Combine proc file handling into a single set of functionsTheodore Ts'o2008-09-231-63/+6
| | | | | | | | | Previously mballoc created a separate set of functions for each proc file. This combines the tunables into a single set of functions which gets used for all of the per-superblock proc files, saving approximately 2k of compiled object code. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: move /proc setup and teardown out of mballoc.cTheodore Ts'o2008-09-231-54/+22
| | | | | | | ...and into the core setup/teardown code in fs/ext4/super.c so that other parts of ext4 can define tuning parameters. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: use percpu data structures for lg_prealloc_listEric Sandeen2008-09-131-8/+5
| | | | | | | | | | lg_prealloc_list seems to cry out for a per-cpu data structure; on a large smp system I think this should be better. I've lightly tested this change on a 4-cpu system. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Acked-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: fix #11321: create /proc/ext4/*/stats more carefullyAlexey Dobriyan2008-09-141-3/+13
| | | | | | | | | | | | | | | | | | ext4 creates per-suberblock directory in /proc/ext4/ . Name used as basis is taken from bdevname, which, surprise, can contain slash. However, proc while allowing to use proc_create("a/b", parent) form of PDE creation, assumes that parent/a was already created. bdevname in question is 'cciss/c0d0p9', directory is not created and all this stuff goes directly into /proc (which is real bug). Warning comes when _second_ partition is mounted. http://bugzilla.kernel.org/show_bug.cgi?id=11321 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Add percpu dirty block accounting.Aneesh Kumar K.V2008-10-101-17/+14
| | | | | | | | | | | | This patch adds dirty block accounting using percpu_counters. Delayed allocation block reservation is now done by updating dirty block counter. In a later patch we switch to non delalloc mode if the filesystem free blocks is greater than 150% of total filesystem dirty blocks Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao<cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Retry block reservationAneesh Kumar K.V2008-09-081-1/+6
| | | | | | | | | | | | | During block reservation if we don't have enough blocks left, retry block reservation with smaller block counts. This makes sure we try fallocate and DIO with smaller request size and don't fail early. The delayed allocation reservation cannot try with smaller block count. So retry block reservation to handle temporary disk full conditions. Also print free blocks details if we fail block allocation during writepages. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Make sure all the block allocation paths reserve blocksAneesh Kumar K.V2008-10-091-10/+13
| | | | | | | | | | | | | | | | With delayed allocation we need to make sure block are reserved before we attempt to allocate them. Otherwise we get block allocation failure (ENOSPC) during writepages which cannot be handled. This would mean silent data loss (We do a printk stating data will be lost). This patch updates the DIO and fallocate code path to do block reservation before block allocation. This is needed to make sure parallel DIO and fallocate request doesn't take block out of delayed reserve space. When free blocks count go below a threshold we switch to a slow patch which looks at other CPU's accumulated percpu counter values. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Add printk priority levels to clean up checkpatch warningsTheodore Ts'o2008-09-081-4/+5
| | | | | Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Fix small file fragmentationAneesh Kumar K.V2008-08-181-7/+46
| | | | | | | | | | For small file block allocations, mballoc uses per cpu prealloc space. Use goal block when searching for the right prealloc space. Also make sure ext4_da_writepages tries to write all the pages for small files in single attempt Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Don't allow lg prealloc list to be grow large.Aneesh Kumar K.V2008-07-231-28/+185
| | | | | | | | | | | | | | | | | | Currently, the locality group prealloc list is freed only when there is a block allocation failure. This can result in large number of entries in the preallocation list making ext4_mb_use_preallocated() expensive. To fix this, we convert the locality group prealloc list to a hash list. The hash index is the order of number of blocks in the prealloc space with a max order of 9. When adding prealloc space to the list we make sure total entries for each order does not exceed 8. If it is more than 8 we discard few entries and make sure the we have only <= 5 entries. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
* ext4: Convert the usage of NR_CPUS to nr_cpu_ids.Aneesh Kumar K.V2008-07-231-2/+2
| | | | | | | | NR_CPUS can be really large. We should be using nr_cpu_ids instead. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
* ext4: Improve error handling in mballocAneesh Kumar K.V2008-07-231-11/+23
| | | | | | | | | Don't call BUG_ON on file system failures. Instead use ext4_error and also handle the continue case properly. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
* ext4: lock block groups when initializingEric Sandeen2008-08-021-0/+3
| | | | | | | | | | | | | | | | | | | | | | | I noticed when filling a 1T filesystem with 4 threads using the fs_mark benchmark: fs_mark -d /mnt/test -D 256 -n 100000 -t 4 -s 20480 -F -S 0 that I occasionally got checksum mismatch errors: EXT4-fs error (device sdb): ext4_init_inode_bitmap: Checksum bad for group 6935 etc. I'd reliably get 4-5 of them during the run. It appears that the problem is likely a race to init the bg's when the uninit_bg feature is enabled. With the patch below, which adds sb_bgl_locking around initialization, I was able to complete several runs with no errors or warnings. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
* ext4: delayed allocation ENOSPC handlingMingming Cao2008-07-141-2/+18
| | | | | | | | | | | | | | | | | | | | This patch does block reservation for delayed allocation, to avoid ENOSPC later at page flush time. Blocks(data and metadata) are reserved at da_write_begin() time, the freeblocks counter is updated by then, and the number of reserved blocks is store in per inode counter. At the writepage time, the unused reserved meta blocks are returned back. At unlink/truncate time, reserved blocks are properly released. Updated fix from Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> to fix the oldallocator block reservation accounting with delalloc, added lock to guard the counters and also fix the reservation for meta blocks. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
* ext4: fix online resize with mballocFrederic Bohe2008-07-111-55/+179
| | | | | | | | | | Update group infos when updating a group's descriptor. Add group infos when adding a group's descriptor. Refresh cache pages used by mb_alloc when changes occur. This will probably need modifications when META_BG resizing will be allowed. Signed-off-by: Frederic Bohe <frederic.bohe@bull.net> Signed-off-by: Mingming Cao <cmm@us.ibm.com>
* ext4: mballoc avoid use root reserved blocks for non root allocationMingming Cao2008-07-111-1/+6
| | | | | | | | | mballoc allocation missed check for blocks reserved for root users. Add ext4_has_free_blocks() check before allocation. Also modified ext4_has_free_blocks() to support multiple block allocation request. Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: cleanup block allocatorAneesh Kumar K.V2008-07-111-1/+1
| | | | | | | | | Move the code related to block allocation to a single function and add helper funtions to differient allocation for data and meta data blocks Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: remove quota allocation when ext4_mb_new_blocks failsShen Feng2008-07-111-4/+6
| | | | | | | | | | Quota allocation is not removed when ext4_mb_new_blocks calls kmem_cache_alloc failed. Also make sure the allocation context is freed on the error path. Signed-off-by: Shen Feng <shen@cn.fujitsu.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: New inode allocation for FLEX_BG meta-data groups.Jose R. Santos2008-07-111-0/+15
| | | | | | | | | | | | | | | | | | | | | | | This patch mostly controls the way inode are allocated in order to make ialloc aware of flex_bg block group grouping. It achieves this by bypassing the Orlov allocator when block group meta-data are packed toghether through mke2fs. Since the impact on the block allocator is minimal, this patch should have little or no effect on other block allocation algorithms. By controlling the inode allocation, it can basically control where the initial search for new block begins and thus indirectly manipulate the block allocator. This allocator favors data and meta-data locality so the disk will gradually be filled from block group zero upward. This helps improve performance by reducing seek time. Since the group of inode tables within one flex_bg are treated as one giant inode table, uninitialized block groups would not need to partially initialize as many inode table as with Orlov which would help fsck time as the filesystem usage goes up. Signed-off-by: Jose R. Santos <jrs@us.ibm.com> Signed-off-by: Valerie Clement <valerie.clement@bull.net> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: fix error processing in mb_free_blocksShen Feng2008-07-131-8/+5
| | | | | | | | | | | | | | | | | | The error processing of the return value of mb_free_blocks is meanless because it only returns 0. This fix includes - make mb_free_blocks return void - remove the error processing part in callers - unlock group before calling ext4_error in mb_free_blocks Signed-off-by: Shen Feng <shen@cn.fujitsu.com> Cc: Mingming Cao <cmm@us.ibm.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
* ext4: error proc entry creation when the fs/ext4 is not correctly createdShen Feng2008-07-131-0/+4
| | | | | | | | | | When the directory fs/ext4 is not correctly created under proc, the entry under this directory should not be created. Signed-off-by: Shen Feng <shen@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
* ext4: Rename read_block_bitmap() to ext4_read_block_bitmap()Theodore Ts'o2008-07-111-5/+5
| | | | | | | Since this a non-static function, make it be ext4 specific to avoid conflicts with potentially other filesystems. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: miscellaneous error checks and coding cleanups for mballocShen Feng2008-07-111-7/+7
| | | | | | | | | | | | | | | | ext4_mb_seq_history_open(): check if sbi->s_mb_history is NULL ext4_mb_history_init(): replace kmalloc and memset with kzalloc ext4_mb_init_backend(): remove memset since kzalloc is used ext4_mb_init(): the return value of ext4_mb_init_backend is int, but i is unsigned, replace it with a new int variable. Signed-off-by: Shen Feng <shen@cn.fujitsu.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: add error processing when calling ext4_mb_init_cache in mballocShen Feng2008-07-111-7/+20
| | | | | | | | | | Add error processing for ext4_mb_load_buddy when it calls ext4_mb_init_cache. Signed-off-by: Shen Feng <shen@cn.fujitsu.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Fix ext4_mb_init_cache return errorMingming Cao2008-07-111-0/+1
| | | | | | | | | ext4_mb_init_cache() incorrectly always return EIO on success. This causes the caller of ext4_mb_init_cache() fail when it checks the return value. Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: switch to seq_filesAlexey Dobriyan2008-07-111-34/+34
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
* ext4: start searching for the right extent from the goal group.Aneesh Kumar K.V2008-07-111-4/+6
| | | | | | | | | | With mballoc we search for the best extent using different criteria. We should always use the goal group when we are starting with a new criteria. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Fix mb_find_next_bit not to return larger than maxAneesh Kumar K.V2008-07-111-8/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some architectures implement ext4_find_next_bit and ext4_find_next_zero_bit in such a way that they return greater than max for some input values. Make sure mb_find_next_bit and mb_find_next_zero_bit return the right values. On 2.6.25 we have include/asm-x86/bitops_32.h static inline unsigned find_first_bit(const unsigned long *addr, unsigned size) { unsigned x = 0; while (x < size) { unsigned long val = *addr++; if (val) return __ffs(val) + x; x += (sizeof(*addr)<<3); } return x; } This can return value greater than size. Reported and fixed here for lustre https://bugzilla.lustre.org/show_bug.cgi?id=15932 https://bugzilla.lustre.org/attachment.cgi?id=17205 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Fix use of uninitialized data with debug enabled.Aneesh Kumar K.V2008-06-051-4/+4
| | | | | | | | | Fix use of uninitialized data with debug enabled. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Retry block allocation if new blocks are allocated from system zone.Aneesh Kumar K.V2008-05-151-11/+36
| | | | | | | | | | | | | | If the block allocator gets blocks out of system zone ext4 calls ext4_error. But if the file system is mounted with errors=continue retry block allocation. We need to mark the system zone blocks as in use to make sure retry don't pick them again System zone is the block range mapping block bitmap, inode bitmap and inode table. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: mballoc fix mb_normalize_request algorithm for 1KB block size filesystemsValerie Clement2008-05-131-10/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case of inode preallocation, the number of blocks to allocate depends on the file size and it is calculated in ext4_mb_normalize_request(). Each group in the filesystem is then checked to find one that can be used for allocation; this is done in ext4_mb_good_group(). When a file bigger than 4MB is created, the requested number of blocks to preallocate, calculated by ext4_mb_normalize_request is 4096. However for a filesystem with 1KB block size, the maximum size of the block buddies used by the multiblock allocator is 2048, so none of groups in the filesystem satisfies the search criteria in ext4_mb_good_group(). Scanning all the filesystem groups impacts performance. This was demonstrated by using a freshly created, 70GB, 1k block filesystem, with caches dropped write before the test via /proc/sys/vm/drop_caches, and with the filesystem mounted with nodelalloc and nodealloc,nomballoc. The time to write an 8 megabyte file using "dd if=/dev/zero of=/mnt/test/fo bs=8k count=1k conv=fsync" took 35.5091 seconds (236kB/s) with nodellaloc, and 0.233754 seconds (35.9 MB/s) with the nodelloc,nomballoc options. With a 1TB partition, it took several minutes to write 8MB! This patch modifies the algorithm in ext4_mb_normalize_group_request to calculate the number of blocks to allocate by taking into account the maximum size of free blocks chunks handled by the multiblock allocator. It has also been tested for filesystems with 2KB and 4KB block sizes to ensure that those cases don't regress. Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Valerie Clement <valerie.clement@bull.net> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* Fix misuses of bdevname()Jean Delvare2008-05-131-4/+2
| | | | | | | | | | | | | bdevname() fills the buffer that it is given as a parameter, so calling strcpy() or snprintf() on the returned value is redundant (and probably not guaranteed to work - I don't think strcpy and snprintf support overlapping buffers.) Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Stephen Tweedie <sct@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ext4: fix hot spins in mballoc after err_freebuddy and err_freemetaRoel Kluin2008-04-291-5/+3
| | | | | | | | | | In ext4_mb_init_backend() 'i' is of type ext4_group_t. Since unsigned, i >= 0 is always true, so fix hot spins after err_freebuddy: and -meta: and prevent decrements when zero. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Move mballoc headers/structures to a seperate header file mballoc.hMingming Cao2008-04-291-295/+1
| | | | | | | | | Move function and structure definiations out of mballoc.c and put it under a new header file mballoc.h Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: cleanup for compiling mballoc with verification and debugging #definesSolofo Ramangalahy2008-04-291-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch allows compiling mballoc with: #define AGGRESSIVE_CHECK #define DOUBLE_CHECK #define MB_DEBUG It fixes: Compilation errors: fs/ext4/mballoc.c: In function '__mb_check_buddy': fs/ext4/mballoc.c:605: error: 'struct ext4_prealloc_space' has no member named 'group_list' fs/ext4/mballoc.c:606: error: 'struct ext4_prealloc_space' has no member named 'pstart' fs/ext4/mballoc.c:608: error: 'struct ext4_prealloc_space' has no member named 'len' Compilation warnings: fs/ext4/mballoc.c: In function 'ext4_mb_normalize_group_request': fs/ext4/mballoc.c:2863: warning: format '%lu' expects type 'long unsigned int', but argument 3 has type 'int' fs/ext4/mballoc.c: In function 'ext4_mb_use_inode_pa': fs/ext4/mballoc.c:3103: warning: format '%lu' expects type 'long unsigned int', but argument 3 has type 'int' Sparse check: fs/ext4/mballoc.c:3818:2: warning: context imbalance in 'ext4_mb_show_ac' - different lock contexts for basic block Signed-off-by: Solofo Ramangalahy <Solofo.Ramangalahy@bull.net> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: Don't do GFP_NOFS allocations after taking ext4_lock_groupAneesh Kumar K.V2008-04-291-14/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | We can't do GFP_NOFS allocation after taking ext4_lock_group BUG: sleeping function called from invalid context at mm/slab.c:3054 in_atomic():1, irqs_disabled():0 1 lock held by vi/2426: #0: (&ei->i_data_sem){----}, at: [<c01cf665>] ext4_release_file+0x23/0x66 Pid: 2426, comm: vi Not tainted 2.6.25-rc7 #24 [<c011a3dc>] __might_sleep+0xbe/0xc5 [<c01620c9>] kmem_cache_alloc+0x22/0xa6 [<c01e382a>] ext4_mb_release_inode_pa+0x73/0x1b3 [<c01e6adf>] ext4_mb_discard_inode_preallocations+0x22d/0x2d4 [<c013000a>] ? param_set_ushort+0x32/0x39 [<c01ceba1>] ext4_discard_reservation+0x27/0x6a [<c01cf66c>] ext4_release_file+0x2a/0x66 [<c0165bd6>] __fput+0xae/0x155 [<c0165e46>] fput+0x17/0x19 [<c0163756>] filp_close+0x50/0x5a [<c01647c0>] sys_close+0x71/0xad [<c0104aba>] sysenter_past_esp+0x5f/0xa5 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: move headers out of include/linuxChristoph Hellwig2008-04-291-2/+2
| | | | | | | | | | Move ext4 headers out of include/linux. This is just the trivial move, there's some more thing that could be done later. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: replace remaining __FUNCTION__ occurrencesHarvey Harrison2008-04-171-10/+10
| | | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: remove extra define of ext4_new_blocks_old from mballoc.cMingming Cao2008-04-171-2/+0
| | | | | | | | The function prototype of ext4_new_blocks_old() is defined in ext4_fs.h, so we don't need the extra function prototype in mballoc.c Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: le*_add_cpu conversionMarcin Slusarz2008-04-171-5/+2
| | | | | | | | | | | | | | | | | replace all: little_endian_variable = cpu_to_leX(leX_to_cpu(little_endian_variable) + expression_in_cpu_byteorder); with: leX_add_cpu(&little_endian_variable, expression_in_cpu_byteorder); generated with semantic patch Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: linux-ext4@vger.kernel.org Cc: sct@redhat.com Cc: Andrew Morton <akpm@linux-foundation.org> Cc: adilger@clusterfs.com Cc: Mingming Cao <cmm@us.ibm.com>
* ext4: Convert list_for_each_rcu() to list_for_each_entry_rcu()Aneesh Kumar K.V2008-04-171-13/+5
| | | | | | | | | | | | | | The list_for_each_entry_rcu() primitive should be used instead of list_for_each_rcu(), as the former is easier to use and provides better type safety. http://groups.google.com/group/linux.kernel/browse_thread/thread/45749c83451cebeb/0633a65759ce7713?lnk=raot Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: reduce mballoc stack usage with noinline_for_stackEric Sandeen2008-04-291-16/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mballoc.c is a whole lot of static functions, which gcc seems to really like to inline. With the changes below, on x86, I can at least get from: 432 ext4_mb_new_blocks 240 ext4_mb_free_blocks 208 ext4_mb_discard_group_preallocations 188 ext4_mb_seq_groups_show 164 ext4_mb_init_cache 152 ext4_mb_release_inode_pa 136 ext4_mb_seq_history_show ... to 220 ext4_mb_free_blocks 188 ext4_mb_seq_groups_show 176 ext4_mb_regular_allocator 164 ext4_mb_init_cache 156 ext4_mb_new_blocks 152 ext4_mb_release_inode_pa 136 ext4_mb_seq_history_show 124 ext4_mb_release_group_pa ... which still has some big functions in there, but not 432 bytes! Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* ext4: use non-racy method for proc entries creationDenis V. Lunev2008-04-291-11/+4
| | | | | | | | | | | | Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data be setup before gluing PDE to main tree. Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: <linux-ext4@vger.kernel.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 20:50:24 +0000