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* Fix QAT allocation failure return valueBrian Behlendorf2020-01-061-15/+18
| | | | | | | | | | | | | | | When qat_compress() fails to allocate the required contiguous memory it mistakenly returns success. This prevents the fallback software compression from taking over and (un)compressing the block. Resolve the issue by correctly setting the local 'status' variable on all exit paths. Furthermore, initialize it to CPA_STATUS_FAIL to ensure qat_compress() always fails safe to guard against any similar bugs in the future. Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9784 Closes #9788
* Static symbols exported by ICPBrian Behlendorf2020-01-021-2/+0
| | | | | | | | | | | | The crypto_cipher_init_prov and crypto_cipher_init are declared static and should not be exported by the ICP. This resolves the following warnings observed when building with the 5.4 kernel. WARNING: "crypto_cipher_init" [.../icp] is a static EXPORT_SYMBOL WARNING: "crypto_cipher_init_prov" [.../icp] is a static EXPORT_SYMBOL Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9791
* Avoid some crashes when importing a pool with corrupt metadataSteve Mokris2019-12-261-3/+11
| | | | | | | | | | | | - Skip invalid DVAs when importing pools in readonly mode (in addition to when the config is untrusted). - Upon encountering a DVA with a null VDEV, fail gracefully instead of panicking with a NULL pointer dereference. Reviewed-by: Pavel Zakharov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Steve Mokris <[email protected]> Closes #9022
* Cancel initialize and TRIM before vdev_metaslab_fini()Brian Behlendorf2019-12-261-6/+7
| | | | | | | | | | | Any running 'zpool initialize' or TRIM must be cancelled prior to the vdev_metaslab_fini() call in spa_vdev_remove_log() which will unload the metaslabs and set ms->ms_group == NULL. Reviewed-by: Igor Kozhukhov <[email protected]> Reviewed-by: Kjeld Schouten <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8602 Closes #9751
* cppcheck: (warning) Possible null pointer dereference: nvhBrian Behlendorf2019-12-181-1/+3
| | | | | | | | | | | Move the 'nvh = (void *)buf' assignment after the 'buf == NULL' check to resolve the warning. Interestingly, cppcheck 1.88 correctly determines that the existing code is safe, while cppcheck 1.86 reports the warning. Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9732
* cppcheck: (error) Address of local auto-variable assignedBrian Behlendorf2019-12-182-0/+2
| | | | | | | | | | | | Suppress autoVariables warnings in the lua interpreter. The usage here while unconventional in intentional and the same as upstream. [module/lua/ldebug.c:327]: (error) Address of local auto-variable assigned to a function parameter. Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9732
* cppcheck: (warning) Possible null pointer dereference: dnpBrian Behlendorf2019-12-181-0/+1
| | | | | | | | | | | | | | The dnp argument can only be set to NULL when the DNODE_DRY_RUN flag is set. In which case, an early return path will be executed and a NULL pointer dereference at the given location is impossible. Add an additional ASSERT to silence the cppcheck warning and document that dbp must never be NULL at the point in the function. [module/zfs/dnode.c:1566]: (warning) Possible null pointer deref: dnp Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9732
* cppcheck: (error) Shifting signed 64-bit value by 63 bitsUbuntu2019-12-181-0/+2
| | | | | | | | | As of cppcheck 1.82 surpress the warning regarding shifting too many bits for __divdi3() implemention. The algorithm used here is correct. Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9732
* cppcheck: (error) Uninitialized variableUbuntu2019-12-188-22/+23
| | | | | | | | | | As of cppcheck 1.82 warnings are issued when using the list_for_each_* functions with an uninitialized variable. Functionally, this is fine but to resolve the warning initialize these variables. Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9732
* cppcheck: (error) Uninitialized variableUbuntu2019-12-182-11/+6
| | | | | | | | | | | | | | | | | Resolve the following uninitialized variable warnings. In practice these were unreachable due to the goto. Replacing the goto with a return resolves the warning and yields more readable code. [module/icp/algs/modes/ccm.c:892]: (error) Uninitialized variable: ccm_param [module/icp/algs/modes/ccm.c:893]: (error) Uninitialized variable: ccm_param [module/icp/algs/modes/gcm.c:564]: (error) Uninitialized variable: gcm_param [module/icp/algs/modes/gcm.c:565]: (error) Uninitialized variable: gcm_param [module/icp/algs/modes/gcm.c:599]: (error) Uninitialized variable: gmac_param [module/icp/algs/modes/gcm.c:600]: (error) Uninitialized variable: gmac_param Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9732
* Minor performance fix for NEON RAID-ZRomain Dolbeau2019-12-171-4/+2
| | | | | | | | | The NEON code replicates too closely the SSE code, including a masked 16-bits shift. But NEON, like AltiVec (#9539), has unsigned 8-bits shift, so use that instead and drop the masking. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Romain Dolbeau <[email protected]> Closes #9725
* Fix zfs_xattr_owner_unlinked on FreeBSD and commentMatthew Macy2019-12-162-0/+18
| | | | | | | | Explain FreeBSD VFS' unfortunate idiosyncratic locking requirements. There is no functional change for other platforms. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9720
* Don't fail to apply umask for O_TMPFILE filesTomohiro Kusumi2019-12-131-0/+6
| | | | | | | | | | | | | Apply umask to `mode` which will eventually be applied to inode. This is needed since VFS doesn't apply umask for O_TMPFILE files. (Note that zpl_init_acl() applies `ip->i_mode &= ~current_umask();` only when POSIX ACL is used.) Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #8997 Closes #8998
* Allow empty ds_props_obj to be destroyedTom Caputi2019-12-131-2/+19
| | | | | | | | | | | | | | | | | | | | | Currently, 'zfs list' and 'zfs get' commands can be slow when working with snapshots that have a ds_props_obj. This is because the code that discovers all of the properties for these snapshots needs to read this object for each snapshot, which almost always ends up causing an extra random synchronous read for each snapshot. This performance penalty exists even if the properties on that snapshot have been unset because the object is normally only freed when the snapshot is freed, even though it is only created when it is needed. This patch allows the user to regain 'zfs list' performance on these snapshots by destroying the ds_props_obj when it no longer has any entries left. In practice on a production machine, this optimization seems to make 'zfs list' about 55% faster. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Paul Zuchowski <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #9704
* Make zfs_replay.c work on FreeBSDMatthew Macy2019-12-133-11/+65
| | | | | | | | | | | | | FreeBSD's vfs currently doesn't permit file systems to do their own locking. To avoid having to have duplicate zfs functions with and without locking add locking here. With luck these changes can be removed in the future. Reviewed-by: Sean Eric Fagan <[email protected]> Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9715
* Fix use-after-free of vd_path in spa_vdev_remove()Matthew Ahrens2019-12-111-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After spa_vdev_remove_aux() is called, the config nvlist is no longer valid, as it's been replaced by the new one (with the specified device removed). Therefore any pointers into the nvlist are no longer valid. So we can't save the result of `fnvlist_lookup_string(nv, ZPOOL_CONFIG_PATH)` (in vd_path) across the call to spa_vdev_remove_aux(). Instead, use spa_strdup() to save a copy of the string before calling spa_vdev_remove_aux. Found by AddressSanitizer: ERROR: AddressSanitizer: heap-use-after-free on address ... READ of size 34 at 0x608000a1fcd0 thread T686 #0 0x7fe88b0c166d (/usr/lib/x86_64-linux-gnu/libasan.so.4+0x5166d) #1 0x7fe88a5acd6e in spa_strdup spa_misc.c:1447 #2 0x7fe88a688034 in spa_vdev_remove vdev_removal.c:2259 #3 0x55ffbc7748f8 in ztest_vdev_aux_add_remove ztest.c:3229 #4 0x55ffbc769fba in ztest_execute ztest.c:6714 #5 0x55ffbc779a90 in ztest_thread ztest.c:6761 #6 0x7fe889cbc6da in start_thread #7 0x7fe8899e588e in __clone 0x608000a1fcd0 is located 48 bytes inside of 88-byte region freed by thread T686 here: #0 0x7fe88b14e7b8 in __interceptor_free #1 0x7fe88ae541c5 in nvlist_free nvpair.c:874 #2 0x7fe88ae543ba in nvpair_free nvpair.c:844 #3 0x7fe88ae57400 in nvlist_remove_nvpair nvpair.c:978 #4 0x7fe88a683c81 in spa_vdev_remove_aux vdev_removal.c:185 #5 0x7fe88a68857c in spa_vdev_remove vdev_removal.c:2221 #6 0x55ffbc7748f8 in ztest_vdev_aux_add_remove ztest.c:3229 #7 0x55ffbc769fba in ztest_execute ztest.c:6714 #8 0x55ffbc779a90 in ztest_thread ztest.c:6761 #9 0x7fe889cbc6da in start_thread Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Ryan Moeller <[email protected]> Signed-off-by: Matthew Ahrens <[email protected]> Closes #9706
* Relocate common quota functions to shared codeRyan Moeller2019-12-118-455/+503
| | | | | | | | | | | The quota functions are common to all implementations and can be moved to common code. As a simplification they were moved to the Linux platform code in the initial refactoring. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Igor Kozhukhov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #9710
* Add FreeBSD jail support hooksMatthew Macy2019-12-112-1/+8
| | | | | | | | | | | | Add the 'zfs jail/unjail' subcommands along with the relevant documentation from FreeBSD. This feature is not supported on Linux and still requires the match kernel ioctls which will be included when the FreeBSD platform code is integrated. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #9686
* Eliminate Linux specific inode usage from common code Matthew Macy2019-12-1114-311/+321
| | | | | | | | | | Change many of the znops routines to take a znode rather than an inode so that zfs_replay code can be largely shared and in the future the much of the znops code may be shared. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9708
* zio_decompress_data always ASSERTs successful decompressionPaul Zuchowski2019-12-101-1/+0
| | | | | | | | | | | | | This interferes with zdb_read_block trying all the decompression algorithms when the 'd' flag is specified, as some are expected to fail. Also control the output when guessing algorithms, try the more common compression types first, allow specifying lsize/psize, and fix an uninitialized variable. Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Paul Zuchowski <[email protected]> Closes #9612 Closes #9630
* Abstract away platform specific superblock referencesMatthew Macy2019-12-102-5/+17
| | | | | | | | The zfsvfs->z_sb field is Linux specified and should be abstracted. Reviewed-by: Richard Laager <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9697
* Exclude data from cores unconditionally and metadata conditionallyMatthew Macy2019-12-091-2/+11
| | | | | | | | | This change allows us to align the code dump logic across platforms. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Don Brady <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9691
* Mark dsl_dataset_deactivate_feature_impl staticMatthew Macy2019-12-091-1/+1
| | | | | | | | | The dsl_dataset_deactivate_feature_impl() function is private and should be marked as such. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Richard Laager <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9696
* ZTS: Fix zpool_reopen_001_posBrian Behlendorf2019-12-091-10/+25
| | | | | | | | | | | | Update the vdev_disk_open() retry logic to use a specified number of milliseconds to be more robust. Additionally, on failure log both the time waited and requested timeout to the internal log. The default maximum allowed open retry time has been increased from 500ms to 1000ms. Reviewed-by: Kjeld Schouten <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9680
* Disable sysfs feature checks on FreeBSDMatthew Macy2019-12-062-2/+8
| | | | | | | | | | | The sysfs infrastructure for reporting supported features and properties is Linux specific. Disable it on FreeBSD until it can be extended to be more portable. Reviewed-by: Kjeld Schouten <[email protected]> Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9684
* ICP: Fix out of bounds writeAttila Fülöp2019-12-061-1/+3
| | | | | | | | | | | | | | | | | | | If gcm_mode_encrypt_contiguous_blocks() is called more than once in succession, with the accumulated lengths being less than blocksize, ctx->copy_to will be incorrectly advanced. Later, if out is NULL, the bcopy at line 114 will overflow ctx->gcm_copy_to since ctx->gcm_remainder_len is larger than the ctx->gcm_copy_to buffer can hold. The fix is to set ctx->copy_to only if it's not already set. For ZoL the issue may be academic, since in all my testing I wasn't able to hit neither of both conditions needed to trigger it, but other consumers can easily do so. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Tom Caputi <[email protected]> Signed-off-by: Attila Fülöp <[email protected]> Closes #9660
* Disable EDONR on FreeBSDMatthew Macy2019-12-053-3/+26
| | | | | | | | | | | FreeBSD uses its own crypto framework in-kernel which, at this time, has no EDONR implementation. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Allan Jude <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #9664
* Refactor deadman set failmode to be cross platformMatthew Macy2019-12-052-11/+22
| | | | | | | | | Update zfs_deadman_failmode to use the ZFS_MODULE_PARAM_CALL wrapper, and split the common and platform specific portions. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9670
* Replace ASSERTV macro with compiler annotationMatthew Macy2019-12-0523-55/+56
| | | | | | | | | | | Remove the ASSERTV macro and handle suppressing unused compiler warnings for variables only in ASSERTs using the __attribute__((unused)) compiler annotation. The annotation is understood by both gcc and clang. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Jorgen Lundman <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9671
* ICP: Fix null pointer dereference and use after freeAttila Fülöp2019-12-032-4/+9
| | | | | | | | | | | | | | | | | | | In gcm_mode_decrypt_contiguous_blocks(), if vmem_alloc() fails, bcopy is called with a NULL pointer destination and a length > 0. This results in undefined behavior. Further ctx->gcm_pt_buf is freed but not set to NULL, leading to a potential write after free and a double free due to missing return value handling in crypto_update_uio(). The code as is may write to ctx->gcm_pt_buf in gcm_decrypt_final() and may free ctx->gcm_pt_buf again in aes_decrypt_atomic(). The fix is to slightly rework error handling and check the return value in crypto_update_uio(). Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Tom Caputi <[email protected]> Reviewed-by: Kjeld Schouten <[email protected]> Signed-off-by: Attila Fülöp <[email protected]> Closes #9659
* Fix use-after-free in case of L2ARC prefetch failureAlexander Motin2019-12-031-3/+16
| | | | | | | | | | | | | | | | In case L2ARC read failed, l2arc_read_done() creates _different_ ZIO to read data from the original storage device. Unfortunately pointer to the failed ZIO remains in hdr->b_l1hdr.b_acb->acb_zio_head, and if some other read try to bump the ZIO priority, it will crash. The problem is reproducible by corrupting L2ARC content and reading some data with prefetch if l2arc_noprefetch tunable is changed to 0. With the default setting the issue is probably not reproducible now. Reviewed-by: Tom Caputi <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Alexander Motin <[email protected]> Sponsored-By: iXsystems, Inc. Closes #9648
* Increase allowed 'special_small_blocks' maximum valueBrian Behlendorf2019-12-031-1/+1
| | | | | | | | | | | | | | There may be circumstances where it's desirable that all blocks in a specified dataset be stored on the special device. Relax the artificial 128K limit and allow the special_small_blocks property to be set up to 1M. When blocks >1MB have been enabled via the zfs_max_recordsize module option, this limit is increased accordingly. Reviewed-by: Don Brady <[email protected]> Reviewed-by: Kjeld Schouten <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9131 Closes #9355
* Wrap module_param_call() routines under __linux__Matthew Macy2019-12-032-2/+2
| | | | | | | | | The module_param_call() functionality is currently still Linux-specific and should be wrapped accordingly. Reviewed-by: Allan Jude <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9666
* Mark write_record staticMatthew Macy2019-12-031-1/+1
| | | | | | | | The write_record() function is private and should be marked as such. Reviewed-by: Allan Jude <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9665
* Move linux qsort def to platform headerMatthew Macy2019-12-032-7/+3
| | | | | | | | | Moving qsort to the platform header allows each platform to provide an appropriate sorting implementation. Reviewed-by: Allan Jude <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9663
* Adapt gitignore for modulesMichael Niewöhner2019-12-021-0/+1
| | | | | | | | | | Remove the specific gitignore rules for module left-overs and add a generic one in modules/. Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Kjeld Schouten <[email protected]> Signed-off-by: Michael Niewöhner <[email protected]> Closes #9656
* Move zfs_cmd_t copyin/copyout to platform codeMatthew Macy2019-12-022-21/+24
| | | | | | | | | | | FreeBSD needs to cope with multiple version of the zfs_cmd_t structure. Allowing the platform code to pre and post process the cmd structure makes it possible to work with legacy tooling. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9624
* Restructure nvlist_nv_alloc to work on FreeBSDMatthew Macy2019-11-301-3/+3
| | | | | | | | | | | | KM_PUSHPAGE is an Illumosism - On FreeBSD it's aliased to the same malloc flag as KM_SLEEP. The compiler naturally rejects multiple case statements with the same value. This is effectively a no-op since all callers pass a specific KM_* flag. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9643
* Mark Linux fallocate extensions as specific to LinuxMatthew Macy2019-11-301-3/+5
| | | | | | | | | fallocate(2) is a Linux-specific system call which in unavailable on other platforms. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9633
* Resolve ZoF differences in zfs_ioctl.hMatthew Macy2019-11-301-1/+0
| | | | | | | | | | FreeBSD needs to be able to pass the jail id to the jail/unjail ioctls and the struct file in the device structure is unused. Reviewed-by: Kjeld Schouten <[email protected]> Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9625
* Remove zfs_vdev_elevator module optionBrian Behlendorf2019-11-271-111/+19
| | | | | | | | | | | | | As described in commit f81d5ef6 the zfs_vdev_elevator module option is being removed. Users who require this functionality should update their systems to set the disk scheduler using a udev rule. Reviewed-by: Richard Laager <[email protected]> Reviewed-by: loli10K <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #8664 Closes #9417 Closes #9609
* Prevent unnecessary resilver restartsjwpoduska2019-11-273-83/+107
| | | | | | | | | | | | | | | | | | If a device is participating in an active resilver, then it will have a non-empty DTL. Operations like vdev_{open,reopen,probe}() can cause the resilver to be restarted (or deferred to be restarted later), which is unnecessary if the DTL is still covered by the current scan range. This is similar to the logic in vdev_dtl_should_excise() where the DTL can only be excised if it's max txg is in the resilvered range. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: John Gallagher <[email protected]> Reviewed-by: Kjeld Schouten <[email protected]> Signed-off-by: John Poduska <[email protected]> Issue #840 Closes #9155 Closes #9378 Closes #9551 Closes #9588
* Check for unlinked znodes after igrab()Mauricio Faria de Oliveira2019-11-211-5/+7
| | | | | | | | | | | | | | | | | | The changes in commit 41e1aa2a / PR #9583 introduced a regression on tmpfile_001_pos: fsetxattr() on a O_TMPFILE file descriptor started to fail with errno ENODATA: openat(AT_FDCWD, "/test", O_RDWR|O_TMPFILE, 0666) = 3 <...> fsetxattr(3, "user.test", <...>, 64, 0) = -1 ENODATA The originally proposed change on PR #9583 is not susceptible to it, so just move the code/if-checks around back in that way, to fix it. Reviewed-by: Pavel Snajdr <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Original-patch-by: Heitor Alves de Siqueira <[email protected]> Signed-off-by: Mauricio Faria de Oliveira <[email protected]> Closes #9602
* Add zfs_file_* interface, remove vnodesMatthew Macy2019-11-2130-1027/+701
| | | | | | | | | | | | | | | | | | Provide a common zfs_file_* interface which can be implemented on all platforms to perform normal file access from either the kernel module or the libzpool library. This allows all non-portable vnode_t usage in the common code to be replaced by the new portable zfs_file_t. The associated vnode and kobj compatibility functions, types, and macros have been removed from the SPL. Moving forward, vnodes should only be used in platform specific code when provided by the native operating system. Reviewed-by: Sean Eric Fagan <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Igor Kozhukhov <[email protected]> Reviewed-by: Jorgen Lundman <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9556
* Partially revert 5a6ac4cBrian Behlendorf2019-11-182-0/+45
| | | | | | | | | | | | | | | | | | | | | | | | Reinstate the zpl_revalidate() functionality to resolve a regression where dentries for open files during a rollback are not invalidated. The unrelated functionality for automatically unmounting .zfs/snapshots was not reverted. Nor was the addition of shrink_dcache_sb() to the zfs_resume_fs() function. This issue was not immediately caught by the CI because the test case intended to catch it was included in the list of ZTS tests which may occasionally fail for unrelated reasons. Remove all of the rollback tests from this list to help identify the frequency of any spurious failures. The rollback_003_pos.ksh test case exposes a real issue with the long standing code which needs to be investigated. Regardless, it has been enable with a small workaround in the test case itself. Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Pavel Snajdr <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9587 Closes #9592
* Break out of zfs_zget early if unlinked znodeHeitor Alves de Siqueira2019-11-151-9/+17
| | | | | | | | | | | If zp->z_unlinked is set, we're working with a znode that has been marked for deletion. If that's the case, we can skip the "goto again" loop and return ENOENT, as the znode should not be discovered. Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Heitor Alves de Siqueira <[email protected]> Closes #9583
* Prevent NULL pointer dereference in blkg_tryget() on EL8 kernelsloli10K2019-11-131-1/+1
| | | | | | | | | | | | | | blkg_tryget() as shipped in EL8 kernels does not seem to handle NULL @blkg as input; this is different from its mainline counterpart where NULL is accepted. To prevent dereferencing a NULL pointer when dealing with block devices which do not set a root_blkg on the request queue perform the NULL check in vdev_bio_associate_blkg(). Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Kjeld Schouten <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #9546 Closes #9577
* Check for __GFP_RECLAIM instead of GFP_KERNELMichael Niewöhner2019-11-131-3/+8
| | | | | | | | | | | Check for __GFP_RECLAIM instead of GFP_KERNEL because zfs modifies IO and FS flags which breaks the check for GFP_KERNEL. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Sebastian Gottschall <[email protected]> Signed-off-by: Michael Niewöhner <[email protected]> Closes #9034
* Add kmem_cache flag for forcing kvmallocMichael Niewöhner2019-11-133-9/+38
| | | | | | | | | | | | | | This adds a new KMC_KVMEM flag was added to enforce use of the kvmalloc allocator in kmem_cache_create even for large blocks, which may also increase performance in some specific cases (e.g. zstd), too. Default to KVMEM instead of VMEM in spl_kmem_cache_create. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Signed-off-by: Sebastian Gottschall <[email protected]> Signed-off-by: Michael Niewöhner <[email protected]> Closes #9034
* Make use of kvmalloc if available and fix vmem_alloc implementationMichael Niewöhner2019-11-132-11/+95
| | | | | | | | | | | | | | | | | This patch implements use of kvmalloc for GFP_KERNEL allocations, which may increase performance if the allocator is able to allocate physical memory, if kvmalloc is available as a public kernel interface (since v4.12). Otherwise it will simply fall back to virtual memory (vmalloc). Also fix vmem_alloc implementation which can lead to slow allocations since the first attempt with kmalloc does not make use of the noretry flag but tells the linux kernel to retry several times before it fails. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Signed-off-by: Sebastian Gottschall <[email protected]> Signed-off-by: Michael Niewöhner <[email protected]> Closes #9034
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