diff --git a/manifest b/manifest
index b27c436553..c3f131b513 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Add\sin\sthe\scost\sof\sdoing\sa\stable\slookup\son\sOR\ssearches.\s\sMake\stest\scase\nchanges\sto\sdeal\swith\sdifference\sin\sSTAT3\sbehavior.
-D 2013-06-19T18:01:44.089
+C Merge\sin\strunk\schanges\sto\sos_unix.c\sthat\sallow\sthe\scode\sto\sbuild\son\nunix\splatforms\sthat\slack\sposix_fallocate().
+D 2013-06-19T23:48:35.353
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 5e41da95d92656a5004b03d3576e8b226858a28e
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -201,7 +201,7 @@ F src/notify.c 976dd0f6171d4588e89e874fcc765e92914b6d30
 F src/os.c b4ad71336fd96f97776f75587cd9e8218288f5be
 F src/os.h 4a46270a64e9193af4a0aaa3bc2c66dc07c29b3f
 F src/os_common.h 92815ed65f805560b66166e3583470ff94478f04
-F src/os_unix.c 42c9b8b7c61c9fa3561258f523be5749e52ed0e0
+F src/os_unix.c a4c49f855cfd0783d7027a5e20dab6bb10fe4e4b
 F src/os_win.c 074cb2b9bca6a1c2bd72acf04666cdc554bfaa9b
 F src/pager.c 79df56da9dd49aceaa4cac207484a9a82cba40ae
 F src/pager.h 5cb78b8e1adfd5451e600be7719f5a99d87ac3b1
@@ -1096,7 +1096,7 @@ F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
 F tool/wherecosttest.c f407dc4c79786982a475261866a161cd007947ae
 F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac
-P 8d2ae8e2f343f82f6fba6d0e89cee7f15b444aa3
-R f44808387531e19eca9d858ab5ea40e0
+P d97898e8e3990ae8c1882c9102b57692d8810730 2b2ade92788be623af6f57e37d98994be2cec142
+R af29521d8d639d3c1ed2b17d2bc51c2a
 U drh
-Z 1152d5230daa64158b83c69b1e514ae0
+Z 42c7b6eae41e304e98ed87b4d40fa5b5
diff --git a/manifest.uuid b/manifest.uuid
index 6cc8090fec..f4251023d7 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-d97898e8e3990ae8c1882c9102b57692d8810730
\ No newline at end of file
+bf5764067ab848e19e5971cbdf892c633495e325
\ No newline at end of file
diff --git a/src/os_unix.c b/src/os_unix.c
index 242c2a3c3b..e4382cbff9 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -48,8 +48,7 @@
 
 /* Use posix_fallocate() if it is available
 */
-#if !defined(HAVE_POSIX_FALLOCATE) \
-      && (_XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L)
+#if !defined(HAVE_POSIX_FALLOCATE) && defined(__linux__)
 # define HAVE_POSIX_FALLOCATE 1
 #endif