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| * ext4: fix mmap data corruption when blocksize < pagesizeJan Kara2014-10-021-1/+5
| | | | | | | | | | | | | | | | | | | | Use truncate_isize_extended() when hole is being created in a file so that ->page_mkwrite() will get called for the partial tail page if it is mmaped (see the first patch in the series for details). Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
| * ext4: fold ext4_nojournal_sops into ext4_sopsTheodore Ts'o2014-09-181-26/+1Star
| | | | | | | | | | | | | | There's no longer any need to have a separate set of super_operations for nojournal mode. Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: support freezing ext2 (nojournal) file systemsTheodore Ts'o2014-09-181-11/+16
| | | | | | | | | | | | | | | | | | Through an oversight, when we added nojournal support to ext4, we didn't add support to allow file system freezing. This is relatively easy to add, so let's do it. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reported-by: Dexuan Cui <decui@microsoft.com>
| * ext4: fold ext4_sync_fs_nojournal() into ext4_sync_fs()Theodore Ts'o2014-09-181-23/+13Star
| | | | | | | | | | | | | | This allows us to eliminate duplicate code, and eventually allow us to also fold ext4_sops and ext4_nojournal_sops together. Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: don't check quota format when there are no quota filesJan Kara2014-09-181-7/+0Star
| | | | | | | | | | | | | | | | | | | | | | The check whether quota format is set even though there are no quota files with journalled quota is pointless and it actually makes it impossible to turn off journalled quotas (as there's no way to unset journalled quota format). Just remove the check. CC: stable@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: explicitly inform user about orphan list cleanupDmitry Monakhov2014-09-161-1/+1
| | | | | | | | | | | | | | | | Production fs likely compiled/mounted w/o jbd debugging, so orphan list clearing will be silent. Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: check EA value offset when loadingDarrick J. Wong2014-09-161-8/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When loading extended attributes, check each entry's value offset to make sure it doesn't collide with the entries. Without this check it is easy to crash the kernel by mounting a malicious FS containing a file with an EA wherein e_value_offs = 0 and e_value_size > 0 and then deleting the EA, which corrupts the name list. (See the f_ea_value_crash test's FS image in e2fsprogs for an example.) Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
| * ext4: don't keep using page if inline conversion failsDarrick J. Wong2014-09-111-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If inline->extent conversion fails (most probably due to ENOSPC) and we release the temporary page that we allocated to transfer the file contents, don't keep using the page pointer after releasing the page. This occasionally leads to complaints about evicting locked pages or hangs when blocksize > pagesize, because it's possible for the page to get reallocated elsewhere in the meantime. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Tao Ma <tm@tao.ma>
| * ext4: validate external journal superblock checksumDarrick J. Wong2014-09-111-0/+9
| | | | | | | | | | | | | | | | | | | | If the external journal device has metadata_csum enabled, verify that the superblock checksum matches the block before we try to mount. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * jbd2: fix journal checksum feature flag handlingDarrick J. Wong2014-09-111-5/+6
| | | | | | | | | | | | | | | | | | | | Clear all three journal checksum feature flags before turning on whichever journal checksum options we want. Rearrange the error checking so that newer flags get complained about first. Reported-by: TR Reardon <thomas_reardon@hotmail.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: provide separate operations for sysfs feature filesLukas Czerner2014-09-111-1/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently sysfs feature files uses ext4_attr_ops as the file operations to show/store data. However the feature files is not supposed to contain any data at all, the sole existence of the file means that the module support the feature. Moreover, none of the sysfs feature attributes actually register show/store functions so that would not be a problem. However if a sysfs feature attribute register a show or store function we might be in trouble because the kobject in this case is _not_ embedded in the ext4_sb_info structure as ext4_attr_show/store expect. So just to be safe, provide separate empty sysfs_ops to use in ext4_feat_ktype. This might safe us from potential problems in the future. As a bonus we can "store" something more descriptive than nothing in the files, so let it contain "enabled" to make it clear that the feature is really present in the module. Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: add sysfs entry showing whether the fs contains errorsLukas Czerner2014-09-111-0/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently there is no easy way to tell that the mounted file system contains errors other than checking for log messages, or reading the information directly from superblock. This patch adds new sysfs entries: errors_count (number of fs errors we encounter) first_error_time (unix timestamp for the first error we see) last_error_time (unix timestamp for the last error we see) If the file system is not marked as containing errors then any of the file will return 0. Otherwise it will contain valid information. More details about the errors should as always be found in the logs. Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: don't use MAXQUOTAS valueJan Kara2014-09-113-15/+18
| | | | | | | | | | | | | | | | | | | | MAXQUOTAS value defines maximum number of quota types VFS supports. This isn't necessarily the number of types ext4 supports. Although ext4 will support project quotas, use ext4 private definition for consistency with other filesystems. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: use non-movable memory for the ext4 superblockGioh Kim2014-09-051-3/+3
| | | | | | | | | | | | | | | | | | | | | | Since the ext4 superblock is not released until the file system is unmounted, allocate the buffer cache entry for the ext4 superblock out of the non-moveable are to allow page migrations and thus CMA allocations to more easily succeed if the CMA area is limited. Signed-off-by: Gioh Kim <gioh.kim@lge.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
| * ext4: renumber EXT4_EX_* flags to avoid flag aliasing problemsTheodore Ts'o2014-09-051-3/+2Star
| | | | | | | | | | Suggested-by: Andreas Dilger <adilger@dilger.ca> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: drop the EXT4_STATE_DELALLOC_RESERVED flagTheodore Ts'o2014-09-053-27/+4Star
| | | | | | | | | | | | | | | | Having done a full regression test, we can now drop the DELALLOC_RESERVED state flag. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
| * ext4: prepare to drop EXT4_STATE_DELALLOC_RESERVEDTheodore Ts'o2014-09-055-14/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The EXT4_STATE_DELALLOC_RESERVED flag was originally implemented because it was too hard to make sure the mballoc and get_block flags could be reliably passed down through all of the codepaths that end up calling ext4_mb_new_blocks(). Since then, we have mb_flags passed down through most of the code paths, so getting rid of EXT4_STATE_DELALLOC_RESERVED isn't as tricky as it used to. This commit plumbs in the last of what is required, and then adds a WARN_ON check to make sure we haven't missed anything. If this passes a full regression test run, we can then drop EXT4_STATE_DELALLOC_RESERVED. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
| * ext4: pass allocation_request struct to ext4_(alloc,splice)_branchTheodore Ts'o2014-09-051-44/+38Star
| | | | | | | | | | | | | | | | | | | | | | | | | | Instead of initializing the allocation_request structure in ext4_alloc_branch(), set it up in ext4_ind_map_blocks(), and then pass it to ext4_alloc_branch() and ext4_splice_branch(). This allows ext4_ind_map_blocks to pass flags in the allocation request structure without having to add Yet Another argument to ext4_alloc_branch(). Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
| * ext4: track extent status tree shrinker delay staticticsZheng Liu2014-09-024-21/+193
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit adds some statictics in extent status tree shrinker. The purpose to add these is that we want to collect more details when we encounter a stall caused by extent status tree shrinker. Here we count the following statictics: stats: the number of all objects on all extent status trees the number of reclaimable objects on lru list cache hits/misses the last sorted interval the number of inodes on lru list average: scan time for shrinking some objects the number of shrunk objects maximum: the inode that has max nr. of objects on lru list the maximum scan time for shrinking some objects The output looks like below: $ cat /proc/fs/ext4/sda1/es_shrinker_info stats: 28228 objects 6341 reclaimable objects 5281/631 cache hits/misses 586 ms last sorted interval 250 inodes on lru list average: 153 us scan time 128 shrunk objects maximum: 255 inode (255 objects, 198 reclaimable) 125723 us max scan time If the lru list has never been sorted, the following line will not be printed: 586ms last sorted interval If there is an empty lru list, the following lines also will not be printed: 250 inodes on lru list ... maximum: 255 inode (255 objects, 198 reclaimable) 0 us max scan time Meanwhile in this commit a new trace point is defined to print some details in __ext4_es_shrink(). Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: Jan Kara <jack@suse.cz> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: improve extents status tree trace pointZheng Liu2014-09-021-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit improves the trace point of extents status tree. We rename trace_ext4_es_shrink_enter in ext4_es_count() because it is also used in ext4_es_scan() and we can not identify them from the result. Further this commit fixes a variable name in trace point in order to keep consistency with others. Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: Jan Kara <jack@suse.cz> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: fix comments about get_blocksSeunghun Lee2014-09-021-2/+2
| | | | | | | | | | | | | | get_blocks is renamed to get_block. Signed-off-by: Seunghun Lee <waydi1@gmail.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: enable block_validity by defaultDarrick J. Wong2014-09-021-2/+2
| | | | | | | | | | | | | | | | | | Enable by default the block_validity feature, which checks for collisions between newly allocated blocks and critical system metadata. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: rename ext4_ext_find_extent() to ext4_find_extent()Theodore Ts'o2014-09-015-28/+27Star
| | | | | | | | | | | | Make the function name less redundant. Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: reuse path object in ext4_move_extents()Theodore Ts'o2014-09-011-15/+12Star
| | | | | | | | | | | | | | | | | | | | Reuse the path object in ext4_move_extents() so we don't unnecessarily free and reallocate it. Also clean up the get_ext_path() wrapper so that it has the same semantics of freeing the path object on error as ext4_ext_find_extent(). Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: reuse path object in ext4_ext_shift_extents()Theodore Ts'o2014-09-011-17/+8Star
| | | | | | | | | | | | | | | | Now that the semantics of ext4_ext_find_extent() are much cleaner, it's safe and more efficient to reuse the path object across the multiple calls to ext4_ext_find_extent() in ext4_ext_shift_extents(). Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: teach ext4_ext_find_extent() to realloc path if necessaryTheodore Ts'o2014-09-012-10/+11
| | | | | | | | | | | | | | This adds additional safety in case for some reason we end reusing a path structure which isn't big enough for current depth of the inode. Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: allow a NULL argument to ext4_ext_drop_refs()Theodore Ts'o2014-09-014-51/+29Star
| | | | | | | | | | | | | | | | Teach ext4_ext_drop_refs() to accept a NULL argument, much like kfree(). This allows us to drop a lot of checks to make sure path is non-NULL before calling ext4_ext_drop_refs(). Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: call ext4_ext_drop_refs() from ext4_ext_find_extent()Theodore Ts'o2014-09-011-7/+4Star
| | | | | | | | | | | | | | | | | | | | | | In nearly all of the calls to ext4_ext_find_extent() where the caller is trying to recycle the path object, ext4_ext_drop_refs() gets called to release the buffer heads before the path object gets overwritten. To simplify things for the callers, and to avoid the possibility of a memory leak, make ext4_ext_find_extent() responsible for dropping the buffers. Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: drop EXT4_EX_NOFREE_ON_ERR from rest of extents handling codeTheodore Ts'o2014-09-013-58/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop EXT4_EX_NOFREE_ON_ERR from ext4_ext_create_new_leaf(), ext4_split_extent(), ext4_convert_unwritten_extents_endio(). This requires fixing all of their callers to potentially ext4_ext_find_extent() to free the struct ext4_ext_path object in case of an error, and there are interlocking dependencies all the way up to ext4_ext_map_blocks(), ext4_swap_extents(), and ext4_ext_remove_space(). Once this is done, we can drop the EXT4_EX_NOFREE_ON_ERR flag since it is no longer necessary. Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: drop EXT4_EX_NOFREE_ON_ERR in convert_initialized_extent()Theodore Ts'o2014-09-011-5/+5
| | | | | | | | | | | | | | Transfer responsibility of freeing struct ext4_ext_path on error to ext4_ext_find_extent(). Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: collapse ext4_convert_initialized_extents()Theodore Ts'o2014-09-011-77/+59Star
| | | | | | | | | | | | | | | | | | | | | | | | The function ext4_convert_initialized_extents() is only called by a single function --- ext4_ext_convert_initalized_extents(). Inline the code and get rid of the unnecessary bits in order to simplify the code. Rename ext4_ext_convert_initalized_extents() to convert_initalized_extents() since it's a static function that is actually only used in a single caller, ext4_ext_map_blocks(). Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: teach ext4_ext_find_extent() to free path on errorTheodore Ts'o2014-09-013-12/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Right now, there are a places where it is all to easy to leak memory on an error path, via a usage like this: struct ext4_ext_path *path = NULL while (...) { ... path = ext4_ext_find_extent(inode, block, path, 0); if (IS_ERR(path)) { /* oops, if path was non-NULL before the call to ext4_ext_find_extent, we've leaked it! :-( */ ... return PTR_ERR(path); } ... } Unfortunately, there some code paths where we are doing the following instead: path = ext4_ext_find_extent(inode, block, orig_path, 0); and where it's important that we _not_ free orig_path in the case where ext4_ext_find_extent() returns an error. So change the function signature of ext4_ext_find_extent() so that it takes a struct ext4_ext_path ** for its third argument, and by default, on an error, it will free the struct ext4_ext_path, and then zero out the struct ext4_ext_path * pointer. In order to avoid causing problems, we add a flag EXT4_EX_NOFREE_ON_ERR which causes ext4_ext_find_extent() to use the original behavior of forcing the caller to deal with freeing the original path pointer on the error case. The goal is to get rid of EXT4_EX_NOFREE_ON_ERR entirely, but this allows for a gentle transition and makes the patches easier to verify. Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: fix accidental flag aliasing in ext4_map_blocks flagsTheodore Ts'o2014-09-011-2/+3
| | | | | | | | | | | | | | | | | | | | | | Commit b8a8684502a0f introduced an accidental flag aliasing between EXT4_EX_NOCACHE and EXT4_GET_BLOCKS_CONVERT_UNWRITTEN. Fortunately, this didn't introduce any untorward side effects --- we got lucky. Nevertheless, fix this and leave a warning to hopefully avoid this from happening in the future. Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: fix ZERO_RANGE bug hidden by flag aliasingTheodore Ts'o2014-09-011-7/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We accidently aliased EXT4_EX_NOCACHE and EXT4_GET_CONVERT_UNWRITTEN falgs, which apparently was hiding a bug that was unmasked when this flag aliasing issue was addressed (see the subsequent commit). The reproduction case was: fsx -N 10000 -l 500000 -r 4096 -t 4096 -w 4096 -Z -R -W /vdb/junk ... which would cause fsx to report corruption in the data file. The fix we have is a bit of an overkill, but I'd much rather be conservative for now, and we can optimize ZERO_RANGE_FL handling later. The fact that we need to zap the extent_status cache for the inode is unfortunate, but correctness is far more important than performance. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: Namjae Jeon <namjae.jeon@samsung.com>
| * ext4: fix ext4_swap_extents() error handlingTheodore Ts'o2014-08-311-33/+29Star
| | | | | | | | | | | | | | | | | | | | | | If ext4_ext_find_extent() returns an error, we have to clear path1 or path2 or else we would end up trying to free an ERR_PTR, which would be bad. Also eliminate some redundant code and mark the error paths as unlikely() Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: refactor ext4_move_extents code baseDmitry Monakhov2014-08-313-891/+338Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | ext4_move_extents is too complex for review. It has duplicate almost each function available in the rest of other codebase. It has useless artificial restriction orig_offset == donor_offset. But in fact logic of ext4_move_extents is very simple: Iterate extents one by one (similar to ext4_fill_fiemap_extents) ->Iterate each page covered extent (similar to generic_perform_write) ->swap extents for covered by page (can be shared with IOC_MOVE_DATA) Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: use ext4_ext_next_allocated_block instead of mext_next_extentDmitry Monakhov2014-08-313-12/+8Star
| | | | | | | | | | | | | | | | This allows us to make mext_next_extent static and potentially get rid of it. Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: use ext4_update_i_disksize instead of opencoded onesDmitry Monakhov2014-08-311-4/+1Star
| | | | | | | | | | Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: remove a duplicate call in ext4_init_new_dir()Wang Shilong2014-08-301-4/+0Star
| | | | | | | | | | | | | | | | ext4_journal_get_write_access() has just been called in ext4_append() calling it again here is duplicated. Signed-off-by: Wang Shilong <wshilong@ddn.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: convert do_split() to use the ERR_PTR conventionTheodore Ts'o2014-08-301-12/+11Star
| | | | | | | | Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: convert dx_probe() to use the ERR_PTR conventionTheodore Ts'o2014-08-301-54/+35Star
| | | | | | | | Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: convert ext4_bread() to use the ERR_PTR conventionTheodore Ts'o2014-08-305-43/+34Star
| | | | | | | | Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: convert ext4_getblk() to use the ERR_PTR conventionTheodore Ts'o2014-08-303-33/+30Star
| | | | | | | | Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| * ext4: convert ext4_dx_find_entry() to use the ERR_PTR conventionTheodore Ts'o2014-08-301-26/+20Star
| | | | | | | | Signed-off-by: Theodore Ts'o <tytso@mit.edu>
* | Merge branch 'for-3.18-consistent-ops' of ↵Linus Torvalds2014-10-151-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu Pull percpu consistent-ops changes from Tejun Heo: "Way back, before the current percpu allocator was implemented, static and dynamic percpu memory areas were allocated and handled separately and had their own accessors. The distinction has been gone for many years now; however, the now duplicate two sets of accessors remained with the pointer based ones - this_cpu_*() - evolving various other operations over time. During the process, we also accumulated other inconsistent operations. This pull request contains Christoph's patches to clean up the duplicate accessor situation. __get_cpu_var() uses are replaced with with this_cpu_ptr() and __this_cpu_ptr() with raw_cpu_ptr(). Unfortunately, the former sometimes is tricky thanks to C being a bit messy with the distinction between lvalues and pointers, which led to a rather ugly solution for cpumask_var_t involving the introduction of this_cpu_cpumask_var_ptr(). This converts most of the uses but not all. Christoph will follow up with the remaining conversions in this merge window and hopefully remove the obsolete accessors" * 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (38 commits) irqchip: Properly fetch the per cpu offset percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t -fix ia64: sn_nodepda cannot be assigned to after this_cpu conversion. Use __this_cpu_write. percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t Revert "powerpc: Replace __get_cpu_var uses" percpu: Remove __this_cpu_ptr clocksource: Replace __this_cpu_ptr with raw_cpu_ptr sparc: Replace __get_cpu_var uses avr32: Replace __get_cpu_var with __this_cpu_write blackfin: Replace __get_cpu_var uses tile: Use this_cpu_ptr() for hardware counters tile: Replace __get_cpu_var uses powerpc: Replace __get_cpu_var uses alpha: Replace __get_cpu_var ia64: Replace __get_cpu_var uses s390: cio driver &__get_cpu_var replacements s390: Replace __get_cpu_var uses mips: Replace __get_cpu_var uses MIPS: Replace __get_cpu_var uses in FPU emulator. arm: Replace __this_cpu_ptr with raw_cpu_ptr ...
| * | block: Replace __this_cpu_ptr with raw_cpu_ptrChristoph Lameter2014-08-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | __this_cpu_ptr is being phased out use raw_cpu_ptr instead which was introduced in 3.15-rc1. Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Tejun Heo <tj@kernel.org>
* | | Merge branch 'for-linus' of ↵Tejun Heo2014-09-247-80/+140
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block into for-3.18 This is to receive 0a30288da1ae ("blk-mq, percpu_ref: implement a kludge for SCSI blk-mq stall during probe") which implements __percpu_ref_kill_expedited() to work around SCSI blk-mq stall. The commit reverted and patches to implement proper fix will be added. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Kent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Christoph Hellwig <hch@lst.de>
| * | | ext4: avoid trying to kfree an ERR_PTR pointerTheodore Ts'o2014-09-032-0/+4
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | Thanks to Dan Carpenter for extending smatch to find bugs like this. (This was found using a development version of smatch.) Fixes: 36de928641ee48b2078d3fe9514242aaa2f92013 Reported-by: Dan Carpenter <dan.carpenter@oracle.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
| * | ext4: fix same-dir rename when inline data directory overflowsDarrick J. Wong2014-08-291-3/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When performing a same-directory rename, it's possible that adding or setting the new directory entry will cause the directory to overflow the inline data area, which causes the directory to be converted to an extent-based directory. Under this circumstance it is necessary to re-read the directory when deleting the old dirent because the "old directory" context still points to i_block in the inode table, which is now an extent tree root! The delete fails with an FS error, and the subsequent fsck complains about incorrect link counts and hardlinked directories. Test case (originally found with flat_dir_test in the metadata_csum test program): # mkfs.ext4 -O inline_data /dev/sda # mount /dev/sda /mnt # mkdir /mnt/x # touch /mnt/x/changelog.gz /mnt/x/copyright /mnt/x/README.Debian # sync # for i in /mnt/x/*; do mv $i $i.longer; done # ls -la /mnt/x/ total 0 -rw-r--r-- 1 root root 0 Aug 25 12:03 changelog.gz.longer -rw-r--r-- 1 root root 0 Aug 25 12:03 copyright -rw-r--r-- 1 root root 0 Aug 25 12:03 copyright.longer -rw-r--r-- 1 root root 0 Aug 25 12:03 README.Debian.longer (Hey! Why are there four files now??) Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
| * | jbd2: fix descriptor block size handling errors with journal_csumDarrick J. Wong2014-08-291-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It turns out that there are some serious problems with the on-disk format of journal checksum v2. The foremost is that the function to calculate descriptor tag size returns sizes that are too big. This causes alignment issues on some architectures and is compounded by the fact that some parts of jbd2 use the structure size (incorrectly) to determine the presence of a 64bit journal instead of checking the feature flags. Therefore, introduce journal checksum v3, which enlarges the descriptor block tag format to allow for full 32-bit checksums of journal blocks, fix the journal tag function to return the correct sizes, and fix the jbd2 recovery code to use feature flags to determine 64bitness. Add a few function helpers so we don't have to open-code quite so many pieces. Switching to a 16-byte block size was found to increase journal size overhead by a maximum of 0.1%, to convert a 32-bit journal with no checksumming to a 32-bit journal with checksum v3 enabled. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reported-by: TR Reardon <thomas_reardon@hotmail.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
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