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Change if (m->valid == 0) to if (m && m->valid == 0)

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This commit is contained in:
Andrey A. Chernov 1995-01-20 23:30:42 +00:00
parent 2ade60ce3c
commit f76c8e8cc3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=5759
1 changed files with 2 additions and 2 deletions
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4
sys/kern/vfs_bio.c
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@ -18,7 +18,7 @@
* 5. Modifications may be freely made to this file if the above conditions
* are met.
*
* $Id: vfs_bio.c,v 1.21 1995/01/15 09:35:58 davidg Exp $
* $Id: vfs_bio.c,v 1.22 1995/01/20 20:11:31 wpaul Exp $
*/
/*
@ -1163,7 +1163,7 @@ allocbuf(struct buf * bp, int size, int vmio)
m->flags |= PG_WANTED;
tsleep(m, PRIBIO, "pgtblk", 0);
} else
if (m->valid == 0)
if (m && m->valid == 0)
vm_page_free(m);
splx(s);
if (bufferdestroyed)