CVS commit: src/sys/miscfs/genfs

["YAMAMOTO Takashi" <yamt%netbsd.org@localhost>]

Module Name:    src
Committed By:   yamt
Date:           Wed Jun  3 15:01:01 UTC 2026

Modified Files:
        src/sys/miscfs/genfs: genfs_io.c

Log Message:
genfs_do_io: fix a pagedaemon deadlock

this should fix the following panic i observed on my machine.

```
panic: out of memory before the pagedaemon thread exists
cpu0: Begin traceback...
vpanic() at netbsd:vpanic+0x189
panic() at netbsd:panic+0x3c
uvm_wait() at netbsd:uvm_wait+0xa5
uvm_km_kmem_alloc() at netbsd:uvm_km_kmem_alloc+0x21b
pool_page_alloc() at netbsd:pool_page_alloc+0x2c
pool_grow() at netbsd:pool_grow+0x367
pool_get() at netbsd:pool_get+0x9f
pool_cache_get_slow() at netbsd:pool_cache_get_slow+0x136
pool_cache_get_paddr() at netbsd:pool_cache_get_paddr+0x256
getiobuf() at netbsd:getiobuf+0x23
genfs_do_io() at netbsd:genfs_do_io+0xde
genfs_gop_write() at netbsd:genfs_gop_write+0x52
genfs_do_putpages() at netbsd:genfs_do_putpages+0x66d
VOP_PUTPAGES() at netbsd:VOP_PUTPAGES+0x43
uvm_pageout() at netbsd:uvm_pageout+0x257
cpu0: End traceback...
```


To generate a diff of this commit:
cvs rdiff -u -r1.105 -r1.106 src/sys/miscfs/genfs/genfs_io.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.