JFS sets a s_maxbytes value that is bigger than the page cache limit
on 32bit machines. This could lead to silent wrapping when a big file
write reaches the page cache limit, corrupting data at the beginning.
Patch against 1.0.14.
-Andi
--- linux-work/fs/jfs/super.c-o Fri Feb 1 07:26:14 2002
+++ linux-work/fs/jfs/super.c Thu Feb 7 04:11:52 2002
@@ -300,6 +300,10 @@
sbi->nls_tab = load_nls_default();
sb->s_maxbytes = ((u64) sb->s_blocksize) << 40;
+#if BITS_PER_LONG==32
+ sb->s_maxbytes = min_t(u64, ((u64)PAGE_CACHE_SIZE << 31)-1,
+ sb->s_maxbytes);
+#endif
return sb;
_______________________________________________
Jfs-discussion mailing list
[EMAIL PROTECTED]
http://www-124.ibm.com/developerworks/oss/mailman/listinfo/jfs-discussion
