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fuse: Fix a regression introduced in r337165

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On systems with non-default DFLTPHYS and/or MAXBSIZE, FUSE would attempt to
use a buf cache block size in excess of permitted size.  This did not affect
most configurations, since DFLTPHYS and MAXBSIZE both default to 64kB.
The issue was discovered and reported using a custom kernel with a DFLTPHYS
of 512kB.

PR:		230260 (comment #9)
Reported by:	ken@
MFC after:	π/𝑒 weeks
This commit is contained in:
cem 2019-02-21 02:41:57 +00:00
parent 0a594400b5
commit 0be3f7847b
1 changed files with 1 additions and 1 deletions
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2
sys/fs/fuse/fuse_vfsops.c
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@ -338,7 +338,7 @@ fuse_vfsop_mount(struct mount *mp)
mp->mnt_kern_flag |= MNTK_USES_BCACHE;
MNT_IUNLOCK(mp);
/* We need this here as this slot is used by getnewvnode() */
mp->mnt_stat.f_iosize = DFLTPHYS;
mp->mnt_stat.f_iosize = MIN(DFLTPHYS, MAXBSIZE);
if (subtype) {
strlcat(mp->mnt_stat.f_fstypename, ".", MFSNAMELEN);
strlcat(mp->mnt_stat.f_fstypename, subtype, MFSNAMELEN);