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author | rwatson <rwatson@FreeBSD.org> | 2005-01-29 23:19:08 +0000 |
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committer | rwatson <rwatson@FreeBSD.org> | 2005-01-29 23:19:08 +0000 |
commit | 39c4afac56e06313844b517438198196f5453fab (patch) | |
tree | 7fbf485dd975b679e87c45be98392a4d225c0add /sys/nfsclient/nfs_vnops.c | |
parent | 3548352d6e449f7fa63a0d1026e8ebf0a1b898ae (diff) | |
download | FreeBSD-src-39c4afac56e06313844b517438198196f5453fab.zip FreeBSD-src-39c4afac56e06313844b517438198196f5453fab.tar.gz |
Style cleanup for O_DIRECT sysctl comment introduced in nfs_vnops.c:1.242.
Diffstat (limited to 'sys/nfsclient/nfs_vnops.c')
-rw-r--r-- | sys/nfsclient/nfs_vnops.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/sys/nfsclient/nfs_vnops.c b/sys/nfsclient/nfs_vnops.c index 7e3fe17..5a90982 100644 --- a/sys/nfsclient/nfs_vnops.c +++ b/sys/nfsclient/nfs_vnops.c @@ -216,14 +216,15 @@ SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_directio_enable, CTLFLAG_RW, &nfs_directio_enable, 0, "Enable NFS directio"); /* - * This sysctl allows other processes to mmap a file that has been opened O_DIRECT - * by a process. In general, having processes mmap the file while Direct IO is in - * progress can lead to Data Inconsistencies. But, we allow this by default to - * prevent DoS attacks - to prevent a malicious user from opening up files O_DIRECT - * preventing other users from mmap'ing these files. "Protected" environments where - * stricter consistency guarantees are required can disable this knob. - * The process that opened the file O_DIRECT cannot mmap() the file, because - * mmap'ed IO on an O_DIRECT open() is not meaningful. + * This sysctl allows other processes to mmap a file that has been opened + * O_DIRECT by a process. In general, having processes mmap the file while + * Direct IO is in progress can lead to Data Inconsistencies. But, we allow + * this by default to prevent DoS attacks - to prevent a malicious user from + * opening up files O_DIRECT preventing other users from mmap'ing these + * files. "Protected" environments where stricter consistency guarantees are + * required can disable this knob. The process that opened the file O_DIRECT + * cannot mmap() the file, because mmap'ed IO on an O_DIRECT open() is not + * meaningful. */ int nfs_directio_allow_mmap = 1; SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_directio_allow_mmap, CTLFLAG_RW, |