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772430dd67
Various disk controllers require their buffers to be aligned to a
cache-line size (128 bytes). For buffers allocated in structures,
ensure that they are 128-byte aligned. Use aligned_malloc to allocate
memory to ensure that the returned memory is 128-byte aligned.
While we are here, we replace the dynamically allocated inode buffer
with a buffer allocated in the uufsd structure just as the superblock
and cylinder group buffers do.
This can be removed if/when the kernel is fixed. Because this problem
has existed on one I/O subsystem or another since the 1990's, we
are probably stuck with dealing with it forever.
The problem most recent showed up in Azure, see:
https://reviews.freebsd.org/D41728
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267654
Before these fixes were applied, it was confirmed that the changes
in this commit also fixed the issue in Azure.
Reviewed-by: Warner Losh, kib
Tested-by: Souradeep Chakrabarti of Microsoft (earlier version)
PR: 267654
Differential Revision: https://reviews.freebsd.org/D41724
39 lines
915 B
Makefile
39 lines
915 B
Makefile
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PACKAGE= ufs
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LIB= ufs
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SHLIBDIR?= /lib
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SHLIB_MAJOR= 8
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SRCS= block.c cgroup.c gsb_crc32.c inode.c sblock.c type.c ffs_subr.c
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SRCS+= ffs_tables.c
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INCS= libufs.h
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MAN= bread.3 cgread.3 getinode.3 libufs.3 sbread.3 ufs_disk_close.3
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MLINKS+= bread.3 bwrite.3
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MLINKS+= bread.3 berase.3
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MLINKS+= cgread.3 cgread1.3
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MLINKS+= cgread.3 cgget.3
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MLINKS+= cgread.3 cgwrite.3
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MLINKS+= cgread.3 cgwrite1.3
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MLINKS+= cgread.3 cgput.3
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MLINKS+= getinode.3 putinode.3
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MLINKS+= sbread.3 sbwrite.3
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MLINKS+= sbread.3 sbget.3
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MLINKS+= sbread.3 sbsearch.3
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MLINKS+= sbread.3 sbfind.3
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MLINKS+= sbread.3 sbput.3
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MLINKS+= ufs_disk_close.3 ufs_disk_fillout.3
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MLINKS+= ufs_disk_close.3 ufs_disk_fillout_blank.3
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MLINKS+= ufs_disk_close.3 ufs_disk_write.3
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.PATH: ${SRCTOP}/sys/libkern ${SRCTOP}/sys/ufs/ffs
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WARNS?= 2
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CFLAGS+= -D_LIBUFS
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.if defined(LIBUFS_DEBUG)
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CFLAGS+= -D_LIBUFS_DEBUGGING
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.endif
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CFLAGS+= -I${.CURDIR}
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.include <bsd.lib.mk>
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