config UBIFS_FS tristate "UBIFS file system support" select CRC16 select CRC32 select CRYPTO if UBIFS_FS_ADVANCED_COMPR select CRYPTO if UBIFS_FS_LZO select CRYPTO if UBIFS_FS_ZLIB select CRYPTO_LZO if UBIFS_FS_LZO select CRYPTO_DEFLATE if UBIFS_FS_ZLIB depends on MTD_UBI help UBIFS is a file system for flash devices which works on top of UBI. config UBIFS_FS_ADVANCED_COMPR bool "Advanced compression options" depends on UBIFS_FS help This option allows to explicitly choose which compressions, if any, are enabled in UBIFS. Removing compressors means inability to read existing file systems. If unsure, say 'N'. config UBIFS_FS_LZO bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR depends on UBIFS_FS default y help LZO compressor is generally faster than zlib but compresses worse. Say 'Y' if unsure. config UBIFS_FS_ZLIB bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR depends on UBIFS_FS default y help Zlib compresses better than LZO but it is slower. Say 'Y' if unsure. config UBIFS_ATIME_SUPPORT bool "Access time support" if UBIFS_FS depends on UBIFS_FS default n help Originally UBIFS did not support atime, because it looked like a bad idea due increased flash wear. This option adds atime support and it is disabled by default to preserve the old behavior. If you enable this option, UBIFS starts updating atime, which means that file-system read operations will cause writes (inode atime updates). This may affect file-system performance and increase flash device wear, so be careful. How often atime is updated depends on the selected strategy: strictatime is the "heavy", relatime is "lighter", etc. If unsure, say 'N' config UBIFS_FS_ENCRYPTION bool "UBIFS Encryption" depends on UBIFS_FS && BLOCK select FS_ENCRYPTION default n help Enable encryption of UBIFS files and directories. This feature is similar to ecryptfs, but it is more memory efficient since it avoids caching the encrypted and decrypted pages in the page cache. git/commit/sound/soc/codecs/wm8940.h?h=nds-private-remove&id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>commitdiff
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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-03 17:10:28 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-08 23:36:29 +1100
commitd7df2443cd5f67fc6ee7c05a88e4996e8177f91b (patch)
tree098a7c0ca4fceb8a65cb1f693c9d71990388933d /sound/soc/codecs/wm8940.h
parenta0615a16f7d0ceb5804d295203c302d496d8ee91 (diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'sound/soc/codecs/wm8940.h')