- 30 Apr, 2008 3 commits
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Josef Bacik authored
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:
Josef Bacik <jbacik@redhat.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Mingming Cao <cmm@us.ibm.com> Signed-off-by:
"Theodore Ts'o" <tytso@mit.edu>
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Jan Kara authored
Call dquot_drop() from ext4_dquot_drop() even if we fail to start a transaction. Otherwise we never get to dropping references to quota structures from the inode and umount will hang indefinitely. Thanks to Payphone LIOU for spotting the problem. Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
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Jan Kara authored
The patch below makes ext4 update mtime and ctime of the directory into which we move file even if the directory entry already exists. Signed-off-by:
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- 17 Apr, 2008 2 commits
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Harvey Harrison authored
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by:
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Harvey Harrison authored
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by:
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- 30 Apr, 2008 1 commit
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Duane Griffin authored
jbd2 debugfs and stats entries should only be created if cache initialisation is successful. At the moment they are being created unconditionally which will leave them dangling if cache (and hence module) initialisation fails. Signed-off-by:
Duane Griffin <duaneg@dghda.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by:
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- 17 Apr, 2008 3 commits
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Randy Dunlap authored
Fix kernel-doc notation in jbd2. Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Duane Griffin authored
If an error occurs during jbd2 cache initialisation it is possible for the journal_head_cache to be NULL when jbd2_journal_destroy_journal_head_cache is called. Replace the J_ASSERT with an if block to handle the situation correctly. Note that even with this fix things will break badly if jbd2 is statically compiled in and cache initialisation fails. Signed-off-by:
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Duane Griffin authored
The revocation table initialisation/destruction code is repeated for each of the two revocation tables stored in the journal. Refactoring the duplicated code into functions is tidier, simplifies the logic in initialisation in particular, and slightly reduces the code size. There should not be any functional change. Signed-off-by:
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- 28 Apr, 2008 1 commit
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Duane Griffin authored
Make revocation cache destruction safe to call if initialisation fails partially or entirely. This allows it to be used to cleanup in the case of initialisation failure, simplifying the code slightly. Signed-off-by:
Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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- 29 Apr, 2008 1 commit
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Joe Perches authored
include/linux/ext4_fs_i.h is included in include/linux/ext_fs.h twice Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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- 17 Apr, 2008 8 commits
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Mingming Cao authored
This patch makes the needlessly global ext4_xattr_list() static. Signed-off-by:
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Mingming Cao authored
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:
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Akinobu Mita authored
Check ext4_journal_get_write_access() errors. Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by:
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Akinobu Mita authored
Use ext4_get_group_desc() in ext4_get_inode_block() instead of open coding the functionality. Signed-off-by:
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Akinobu Mita authored
Use ext4_group_first_block_no() and assign the return values to ext4_fsblk_t variables. Signed-off-by:
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Marcin Slusarz authored
Convert byte order of constant instead of variable which can be done at compile time (vs run time). Signed-off-by:
Marcin Slusarz <marcin.slusarz@gmail.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by:
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Marcin Slusarz authored
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:
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Aneesh Kumar K.V authored
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=raotSigned-off-by:
Roel Kluin <12o3l@tiscali.nl> Signed-off-by:
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- 29 Apr, 2008 1 commit
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Eric Sandeen authored
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:
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- 30 Apr, 2008 2 commits
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Andi Kleen authored
I checked ext4_ioctl and it looked largely safe to not be used without BKL. So convert it over to unlocked_ioctl. Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
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Aneesh Kumar K.V authored
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:
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- 29 Apr, 2008 4 commits
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Aneesh Kumar K.V authored
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:
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Aneesh Kumar K.V authored
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:
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Aneesh Kumar K.V authored
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:
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Aneesh Kumar K.V authored
Fail migrate if we allocated new blocks via mmap write. If we write to holes in the file via mmap, we end up allocating new blocks. This block allocation happens without taking inode->i_mutex. Since migrate is protected by i_mutex and migrate expects that no new blocks get allocated during migrate, fail migrate if new blocks get allocated. We can't take inode->i_mutex in the mmap write path because that would result in a locking order violation between i_mutex and mmap_sem. Also adding a separate rw_sempahore for protection is really high overhead for a rare operation such as migrate. Signed-off-by:
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- 17 Apr, 2008 1 commit
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Aneesh Kumar K.V authored
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:
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- 29 Apr, 2008 5 commits
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Aneesh Kumar K.V authored
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:
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Aneesh Kumar K.V authored
ext4 uses ZERO_PAGE(0) to zero out blocks. We need to export different symbols in different arches for the usage of ZERO_PAGE in modules. Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Aneesh Kumar K.V authored
ext4 uses ZERO_PAGE(0) to zero out blocks. We need to export different symbols in different arches for the usage of ZERO_PAGE in modules. Signed-off-by:
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Aneesh Kumar K.V authored
ext4 uses ZERO_PAGE(0) to zero out blocks. We need to export different symbols in different arches for the usage of ZERO_PAGE in modules. Signed-off-by:
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Aneesh Kumar K.V authored
This patch enables extent-formatted normal symlinks. Using extents format allows a symlink to refer to a block number larger than 2^32 on large filesystems. We still don't enable extent format for fast symlinks, which are contained in the inode itself. Signed-off-by:
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- 17 Apr, 2008 1 commit
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Aneesh Kumar K.V authored
Put the old extent details back if we fail to split the uninitialized extent. Signed-off-by:
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- 30 Apr, 2008 1 commit
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Josef Bacik authored
The "resize" option won't be noticed as it comes after the NULL option, so if you try to mount (or in this case remount) with that option it won't be recognized. Cc: <linux-ext4@vger.kernel.org> Signed-off-by:
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- 17 Apr, 2008 1 commit
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Hisashi Hifumi authored
Currently fdatasync is identical to fsync in ext3. I think fdatasync should skip journal flush in data=ordered and data=writeback mode when it overwrites to already-instantiated blocks on HDD. When I_DIRTY_DATASYNC flag is not set, fdatasync should skip journal writeout because this indicates only atime or/and mtime updates. Following patch is the same approach of ext2's fsync code(ext2_sync_file). I did a performance test using the sysbench. #sysbench --num-threads=128 --max-requests=50000 --test=fileio --file-total-size=128G --file-test-mode=rndwr --file-fsync-mode=fdatasync run The result on ext3 was: -2.6.24 Operations performed: 0 Read, 50080 Write, 59600 Other = 109680 Total Read 0b Written 782.5Mb Total transferred 782.5Mb (12.116Mb/sec) 775.45 Requests/sec executed Test execution summary: total time: 64.5814s total number of events: 50080 total time taken by event execution: 3713.9836 per-request statistics: min: 0.0000s avg: 0.0742s max: 0.9375s approx. 95 percentile: 0.2901s Threads fairness: events (avg/stddev): 391.2500/23.26 execution time (avg/stddev): 29.0155/1.99 -2.6.24-patched Operations performed: 0 Read, 50009 Write, 61596 Other = 111605 Total Read 0b Written 781.39Mb Total transferred 781.39Mb (16.419Mb/sec) 1050.83 Requests/sec executed Test execution summary: total time: 47.5900s total number of events: 50009 total time taken by event execution: 2934.5768 per-request statistics: min: 0.0000s avg: 0.0587s max: 0.8938s approx. 95 percentile: 0.1993s Threads fairness: events (avg/stddev): 390.6953/22.64 execution time (avg/stddev): 22.9264/1.17 Filesystem I/O throughput was improved. Signed-off-by :Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp> Acked-by:
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- 30 Apr, 2008 1 commit
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Josef Bacik authored
This patch fix a panic while running fsfuzzer. We are improperly checking the return of ext4_orphan_get. Signed-off-by:
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- 17 Apr, 2008 2 commits
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Josef Bacik authored
There are several cases where the running transaction can get buffers added to its BJ_Metadata list which it never dirtied, which makes its t_nr_buffers counter end up larger than its t_outstanding_credits counter. This will cause issues when starting new transactions as while we are logging buffers we decrement t_outstanding_buffers, so when t_outstanding_buffers goes negative, we will report that we need less space in the journal than we actually need, so transactions will be started even though there may not be enough room for them. In the worst case scenario (which admittedly is almost impossible to reproduce) this will result in the journal running out of space. The fix is to only refile buffers from the committing transaction to the running transactions BJ_Modified list when b_modified is set on that journal, which is the only way to be sure if the running transaction has modified that buffer. This patch also fixes an accounting error in journal_forget, it is possible that we can call journal_forget on a buffer without having modified it, only gotten write access to it, so instead of freeing a credit, we only do so if the buffer was modified. The assert will help catch if this problem occurs. Without these two patches I could hit this assert within minutes of running postmark, with them this issue no longer arises. Cc: <linux-ext4@vger.kernel.org> Cc: Jan Kara <jack@ucw.cz> Signed-off-by:
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Josef Bacik authored
Currently at the start of a journal commit we loop through all of the buffers on the committing transaction and clear the b_modified flag (the flag that is set when a transaction modifies the buffer) under the j_list_lock. The problem is that everywhere else this flag is modified only under the jbd2 lock buffer flag, so it will race with a running transaction who could potentially set it, and have it unset by the committing transaction. This is also a big waste, you can have several thousands of buffers that you are clearing the modified flag on when you may not need to. This patch removes this code and instead clears the b_modified flag upon entering do_get_write_access/journal_get_create_access, so if that transaction does indeed use the buffer then it will be accounted for properly, and if it does not then we know we didn't use it. That will be important for the next patch in this series. Tested thoroughly by myself using postmark/iozone/bonnie++. Cc: <linux-ext4@vger.kernel.org> Cc: Jan Kara <jack@ucw.cz> Signed-off-by:
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- 29 Apr, 2008 2 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6Linus Torvalds authored
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Provide ACPI fixup for /proc/cpuinfo/physical_id [IA64] Remove printk noise on unimplemented SAL_PHYSICAL_ID_INFO [IA64] allocate multiple contiguous pages via uncached allocator [IA64] bugfix: nptcg breaks cpu-hotadd
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Linus Torvalds authored
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: Smack: Integrate Smack with Audit Security: Typecast CAP_*_SET macros Security: Make secctx_to_secid() take const secdata
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