3b6056204d
Writes on UFS through a mapped region do not allocate disk blocks in holes immediately. The blocks are allocated when the pages are paged out first time. This breaks the algorithm in vn_bmap_seekhole() and ufs_bmap_seekdata(), because VOP_BMAP() reports hole for the place which already contains a valid data. Clean the pages before doing VOP_BMAP() in the affected functions. In principle, we could clean less by only requesting clean starting from the offset, but it is probably not very important. PR: 269261 Reported by: asomers Reviewed by: asomers, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D38379 |
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amd64 | ||
arm | ||
arm64 | ||
bsm | ||
cam | ||
cddl | ||
compat | ||
conf | ||
contrib | ||
crypto | ||
ddb | ||
dev | ||
dts | ||
fs | ||
gdb | ||
geom | ||
gnu | ||
i386 | ||
isa | ||
kern | ||
kgssapi | ||
libkern | ||
modules | ||
net | ||
net80211 | ||
netgraph | ||
netinet | ||
netinet6 | ||
netipsec | ||
netlink | ||
netpfil | ||
netsmb | ||
nfs | ||
nfsclient | ||
nfsserver | ||
nlm | ||
ofed | ||
opencrypto | ||
powerpc | ||
riscv | ||
rpc | ||
security | ||
sys | ||
teken | ||
tests | ||
tools | ||
ufs | ||
vm | ||
x86 | ||
xdr | ||
xen | ||
Makefile | ||
README.md |
FreeBSD Kernel Source:
This directory contains the source files and build glue that make up the FreeBSD kernel and its modules, including both original and contributed software.
Kernel configuration files are located in the conf/
subdirectory of each
architecture. GENERIC
is the configuration used in release builds. NOTES
contains documentation of all possible entries. LINT
is a compile-only
configuration used to maximize build coverage and detect regressions.
Source Roadmap:
Directory | Description |
---|---|
amd64 | AMD64 (64-bit x86) architecture support |
arm | 32-bit ARM architecture support |
arm64 | 64-bit ARM (AArch64) architecture support |
cam | Common Access Method storage subsystem - cam(4) and ctl(4) |
cddl | CDDL-licensed optional sources such as DTrace |
conf | kernel build glue |
compat | Linux compatibility layer, FreeBSD 32-bit compatibility |
contrib | 3rd-party imported software such as OpenZFS |
crypto | crypto drivers |
ddb | interactive kernel debugger - ddb(4) |
fs | most filesystems, excluding UFS, NFS, and ZFS |
dev | device drivers |
gdb | kernel remote GDB stub - gdb(4) |
geom | GEOM framework - geom(4) |
i386 | i386 (32-bit x86) architecture support |
kern | main part of the kernel |
libkern | libc-like and other support functions for kernel use |
modules | kernel module infrastructure |
net | core networking code |
net80211 | wireless networking (IEEE 802.11) - net80211(4) |
netgraph | graph-based networking subsystem - netgraph(4) |
netinet | IPv4 protocol implementation - inet(4) |
netinet6 | IPv6 protocol implementation - inet6(4) |
netipsec | IPsec protocol implementation - ipsec(4) |
netpfil | packet filters - ipfw(4) , pf(4) , and ipfilter(4) |
opencrypto | OpenCrypto framework - crypto(7) |
powerpc | PowerPC/POWER (32 and 64-bit) architecture support |
riscv | 64-bit RISC-V architecture support |
security | security facilities - audit(4) and mac(4) |
sys | kernel headers |
tests | kernel unit tests |
ufs | Unix File System - ffs(7) |
vm | virtual memory system |
x86 | code shared by AMD64 and i386 architectures |