Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'nfs-for-3.11-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfix from Trond Myklebust:
"Stable patch to fix a highmem-related data corruption issue on 32-bit
ARM platforms"
* tag 'nfs-for-3.11-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
SUNRPC: Fix memory corruption issue on 32-bit highmem systems
+6
-3
+6
-3
net/sunrpc/xdr.c
+6
-3
net/sunrpc/xdr.c
···
207
207
pgfrom_base -= copy;
208
208
209
209
vto = kmap_atomic(*pgto);
210
-
vfrom = kmap_atomic(*pgfrom);
211
-
memmove(vto + pgto_base, vfrom + pgfrom_base, copy);
210
+
if (*pgto != *pgfrom) {
211
+
vfrom = kmap_atomic(*pgfrom);
212
+
memcpy(vto + pgto_base, vfrom + pgfrom_base, copy);
213
+
kunmap_atomic(vfrom);
214
+
} else
215
+
memmove(vto + pgto_base, vto + pgfrom_base, copy);
212
216
flush_dcache_page(*pgto);
213
-
kunmap_atomic(vfrom);
214
217
kunmap_atomic(vto);
215
218
216
219
} while ((len -= copy) != 0);