- 12 7月, 2008 6 次提交
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由 Aneesh Kumar K.V 提交于
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: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Aneesh Kumar K.V 提交于
When mballoc is enabled, block allocation for old block-based files are allocated using mballoc allocator instead of old block-based allocator. The old ext3 block reservation is turned off when mballoc is turned on. However, the in-core preallocation is not enabled for block-based/ non-extent based file block allocation. This result in performance regression, as now we don't have "reservation" ore in-core preallocation to prevent interleaved fragmentation in multiple writes workload. This patch fix this by enable per inode in-core preallocation for non extent files when mballoc is used. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Shen Feng 提交于
Fix ext4_ext_journal_restart() so it returns any errors reported by ext4_journal_extend() and ext4_journal_restart(). Signed-off-by: NShen Feng <shen@cn.fujitsu.com> Reviewed-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Shen Feng 提交于
When pos=0 or depth, the fields of ext4_ext_path is are not completely filled. This patch also removes some unnecessary code. Signed-off-by: NShen Feng <shen@cn.fujitsu.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Shen Feng 提交于
ext4_ext_create_new_leaf must return error when its calling to ext4_ext_split failed. Signed-off-by: NShen Feng <shen@cn.fujitsu.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Reviewed-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Aneesh Kumar K.V 提交于
When allocating unitialized space at the end of file which had been preallocated with the FALLOC_FL_KEEP_SIZE option, the file size is not updated at that time. But the later we are not updating the file size when writing to that preallocated space. These changes are for code correctness. This patch allows us to update the i_disksize at the write_end() callback of filesystem properly. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 30 4月, 2008 3 次提交
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由 Solofo Ramangalahy 提交于
The recently announced "Linux POSIX file system test suite" caught a truncate issue when using extents: mtime and ctime are not updated when truncate is successful. This is the single issue caught with "default" ext4 (mkfs and mount with minimal options). The testsuite does not report failure with -o noextents. With the following patch, all tests of the testsuite pass. Signed-off-by: NSolofo Ramangalahy <Solofo.Ramangalahy@bull.net> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Christoph Hellwig 提交于
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: NChristoph Hellwig <hch@lst.de> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Josef Bacik 提交于
This fixes the allocations with GFP_KERNEL while under a transaction problems in ext4. This patch is the same as its ext3 counterpart, just switches these to GFP_NOFS. Signed-off-by: NJosef Bacik <jbacik@redhat.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 17 4月, 2008 2 次提交
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由 Harvey Harrison 提交于
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Marcin Slusarz 提交于
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: NMarcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: N"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>
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- 30 4月, 2008 1 次提交
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由 Aneesh Kumar K.V 提交于
When we convert an uninitialized extent to an initialized extent we need to make sure we return the number of blocks in the extent from the file system block corresponding to logical file block. Otherwise we cache wrong extent details and this results in file system corruption. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 29 4月, 2008 3 次提交
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由 Aneesh Kumar K.V 提交于
ext4_ext_get_blocks() returns the number of blocks allocated with buffer head unmapped for a read from prealloc space. This is needed so that delayed allocation doesn't do block reservation for prealloc space since the blocks are already reserved on disk. Mark the buffer head unwritten. Some code paths try to read the block if the buffer_head is not new and no uptodate. Marking the buffer head unwritten avoids this reading. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Aneesh Kumar K.V 提交于
ext4_ext_get_blocks() returns number of blocks allocated with buffer heads unmapped for a read from prealloc space. This is needed so that delayed allocation doesn't do block reservation for prealloc space since the blocks are already resevred on disk. Fix ext4_ext_get_blocks to not return greater than max_blocks, since some of the code paths cannot handle such a return value. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Aneesh Kumar K.V 提交于
ext4_fallocate needs to update file size in each transaction. Otherwise if we crash the file size won't be seen. We were also not marking the inode dirty after updating file size before. Also when we try to retry allocation due to ENOSPC, make sure we reset the variable ret so that we actually do a retry. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 17 4月, 2008 1 次提交
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由 Aneesh Kumar K.V 提交于
If the preallocated area is small zero out the full extent instead of splitting them. This should avoid the "write every alternate block" problem that could grow the number of extents dramatically. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 29 4月, 2008 1 次提交
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由 Aneesh Kumar K.V 提交于
This patch handles possible ENOSPC errors when writing to an uninitialized extent in case the filesystem is full. A write to a prealloc area causes the split of an unititalized extent into initialized and uninitialized extents. If we don't have space to add new extent information, instead of returning error, convert the existing uninitialized extent to initialized one. We need to zero out the blocks corresponding to the entire extent to prevent uninitialized data reaching userspace. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 17 4月, 2008 1 次提交
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由 Aneesh Kumar K.V 提交于
Put the old extent details back if we fail to split the uninitialized extent. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 26 2月, 2008 2 次提交
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由 Aneesh Kumar K.V 提交于
If we fail to allocate blocks don't call ext4_error. Also don't hide errors from ext4_get_blocks_wrap Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Mingming Cao 提交于
This patch fixes a bug when writing to preallocated but uninitialized blocks, which resulted in a BUG in fs/buffer.c saying that the buffer is not mapped. When writing to a file, ext4_get_block_wrap() is called with create=1 in order to request that blocks be allocated if necessary. It currently calls ext4_get_blocks() with create=0 in order to do a lookup first. If the inode contains an unitialized data block, the buffer head is left unampped, which ext4_get_blocks_wrap() returns, causing the BUG. We fix this by checking to see if the buffer head is unmapped, and if so, we make sure the the buffer head is mapped by calling ext4_ext_get_blocks with create=1. Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 16 2月, 2008 1 次提交
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由 Valerie Clement 提交于
When a directory inode is allocated in the last group and the last group contains less than s_blocks_per_group blocks, the initial block allocated for the directory is not always allocated in the same group as the directory inode, but in one of the first groups of the filesystem (group 1 for example). Depending on the current process's pid, ext4_find_near() and ext4_ext_find_goal() can return a block number greater than the maximum blocks count in the filesystem and in that case the block will be not allocated in the same group as the inode. The following patch fixes the problem. Should the modification also be done in ext2/3 code? Signed-off-by: NValerie Clement <valerie.clement@bull.net> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 22 2月, 2008 1 次提交
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由 Aneesh Kumar K.V 提交于
When the user was writing into an unitialized extent, ext4_ext_convert_to_initialize() was not requesting journal write access before it started to modify the extent tree. Fix this oversight. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 26 2月, 2008 1 次提交
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由 Aneesh Kumar K.V 提交于
The path variable returned via ext4_ext_find_extent is a kmalloc variable and needs to be freeded. It also contains a reference to buffer_head which needs to be dropped. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 16 2月, 2008 1 次提交
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由 Aneesh Kumar K.V 提交于
ext4_fallocate() was trying to acquire i_data_sem outside of jbd2_start_transaction/jbd2_journal_stop, which violates ext4's locking hierarchy. So we take i_mutex to prevent writes and truncates during the complete fallocate operation, and use ext4_get_block_wrap() which acquires and releases i_data_sem for each block allocation. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 29 1月, 2008 11 次提交
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由 Aneesh Kumar K.V 提交于
ext4 uses the high bit of the extent length to encode whether the extent is intialized or not. The helper function ext4_ext_get_actual_len should be used to get the actual length of the extent. This addresses the kernel bug documented here: http://bugzilla.kernel.org/show_bug.cgi?id=9732 kernel BUG at fs/ext4/extents.c:1056! .... Call Trace: [<ffffffff88366073>] :ext4dev:ext4_ext_get_blocks+0x5ba/0x8c1 [<ffffffff81053c91>] lock_release_holdtime+0x27/0x49 [<ffffffff812748f6>] _spin_unlock+0x17/0x20 [<ffffffff883400a6>] :jbd2:start_this_handle+0x4e0/0x4fe [<ffffffff88366564>] :ext4dev:ext4_fallocate+0x175/0x39a [<ffffffff81053c91>] lock_release_holdtime+0x27/0x49 [<ffffffff81056480>] __lock_acquire+0x4e7/0xc4d [<ffffffff81053c91>] lock_release_holdtime+0x27/0x49 [<ffffffff810a8de7>] sys_fallocate+0xe4/0x10d [<ffffffff8100c043>] tracesys+0xd5/0xda Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Dmitry Monakhov 提交于
Fix bug reported by Dmitry Monakhov caused by lost error code Testcase: blksize = 0x1000; fd = open(argv[1], O_RDWR|O_CREAT, 0700); unsigned long long sz = 0x10000000UL; /* allocating big blocks chunk */ syscall(__NR_fallocate, fd, 0, 0UL, sz) /* grab all other available filesystem space */ tfd = open("tmp", O_RDWR|O_CREAT|O_DIRECT, 0700); while( write(tfd, buf, 4096) > 0); /* loop untill ENOSPC */ fsync(fd); /* just in case */ while (pos < sz) { /* each seek+ write operation result in splits uninitialized extent in three extents. Splitting may result in new extent allocation which probably will fail because of ENOSPC*/ lseek(fd, blksize*2 -1, SEEK_CUR); if ((ret = write(fd, 'a', 1)) != 1) exit(1); pos += blksize * 2; } Signed-off-by: NDmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Alex Tomas 提交于
Signed-off-by: NAlex Tomas <alex@clusterfs.com> Signed-off-by: NAndreas Dilger <adilger@clusterfs.com> Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NEric Sandeen <sandeen@redhat.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Alex Tomas 提交于
Add the functions ext4_ext_search_left() and ext4_ext_search_right(), which are used by mballoc during ext4_ext_get_blocks to decided whether to merge extent information. Signed-off-by: NAlex Tomas <alex@clusterfs.com> Signed-off-by: NAndreas Dilger <adilger@clusterfs.com> Signed-off-by: NJohann Lombardi <johann@clusterfs.com> Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Aneesh Kumar K.V 提交于
The below patch add ioctl for migrating ext3 indirect block mapped inode to ext4 extent mapped inode. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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由 Aneesh Kumar K.V 提交于
We are currently taking the truncate_mutex for every read. This would have performance impact on large CPU configuration. Convert the lock to read write semaphore and take read lock when we are trying to read the file. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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由 Aneesh Kumar K.V 提交于
When doing a migrate from ext3 to ext4 inode we need to make sure the test for inode type and walking inode data happens inside lock. To make this happen move truncate_mutex early before checking the i_flags. This actually should enable us to remove the verify_chain(). Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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由 Aneesh Kumar K.V 提交于
ext4_ext_get_blocks returns negative values on error. We should check for <= 0 Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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由 Aneesh Kumar K.V 提交于
Fix sparse warnings related to static functions and local variables. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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由 Eric Sandeen 提交于
There are many casts in extents.c which are not needed, as the variables are already the type of the cast, or are being promoted for no particular reason in printk's. Signed-off-by: NEric Sandeen <sandeen@redhat.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com>
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由 Aneesh Kumar K.V 提交于
This patch adds a new data type ext4_lblk_t to represent the logical file blocks. This is the preparatory patch to support large files in ext4 The follow up patch with convert the ext4_inode i_blocks to represent the number of blocks in file system block size. This changes makes it possible to have a block number 2**32 -1 which will result in overflow if the block number is represented by signed long. This patch convert all the block number to type ext4_lblk_t which is typedef to __u32 Also remove dead code ext4_ext_walk_space Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: NEric Sandeen <sandeen@redhat.com>
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- 18 10月, 2007 3 次提交
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由 Aneesh Kumar K.V 提交于
Convert ext4_extent_idx.ei_leaf ext4_extent_idx.ei_leaf_lo This helps in finding BUGs due to direct partial access of these split 48 bit values. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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由 Aneesh Kumar K.V 提交于
Convert ext4_extent.ee_start to ext4_extent.ee_start_lo This helps in finding BUGs due to direct partial access of these split 48 bit values Also fix direct partial access in ext4 code Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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由 Mingming Cao 提交于
change JBD_XXX macros to JBD2_XXX in JBD2/Ext4 Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 01 8月, 2007 1 次提交
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由 Mingming Cao 提交于
Yan Zheng wrote: > I think I found a bug in ext4/extents.c, "ext4_ext_put_in_cache" uses > "__u32" to receive physical block number. "ext4_ext_put_in_cache" is > used in "ext4_ext_get_blocks", it sets ext4 inode's extent cache > according most recently tree lookup (higher 16 bits of saved physical > block number are always zero). when serving a mapping request, > "ext4_ext_get_blocks" first check whether the logical block is in > inode's extent cache. if the logical block is in the cache and the > cached region isn't a gap, "ext4_ext_get_blocks" gets physical block > number by using cached region's physical block number and offset in > the cached region. as described above, "ext4_ext_get_blocks" may > return wrong result when there are physical block numbers bigger than > 0xffffffff. > You are right. Thanks for reporting this! Signed-off-by: NMingming Cao <cmm@us.ibm.com> Cc: Yan Zheng <yanzheng@21cn.com> Cc: <stable@kernel.org> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 18 7月, 2007 1 次提交
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由 Dmitry Monakhov 提交于
Use the EXT_LAST_INDEX macro; that's what it's there for. Clean up ext4_ext_ext_grow_indepth() so the correct EXT_FIRST_INDEX or EXT_FIRST_MACRO is used as necessary. The two macros are equivalent, so the C will collapse the if statement out, but it makes the code much more readable. Signed-off-by: NDmitry Monakhov <dmonakhov@openvz.org> Acked-by: NAlex Tomas <alex@clusterfs.com> Signed-off-by: NDave Kleikamp <shaggy@linux.vnet.ibm.com> Singed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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