This patch series is extracted from http://ftp.de.debian.org/debian/pool/main/g/genext2fs/genext2fs_1.4.1-4.debian.tar.gz The patches are used in Debian for quite a long time, so I assume that this is solid material. At least, my Ubuntu host fsck.ext4 does not bark :-) The goal is to allow building filesystems with larger blocksizes instead of the current default of 1k. This should improve performance and lifetime when the filesystem is stored e.g. on a SD card (on Raspberry Pi/I2SE Duckbill for example) which uses internal flash memory. Writing to flash memory is slow because writing the data of one block results in erasing a whole erase block of the flash memory. Thus it is preferable to align the filesystem block size on a flash device with the erase blocksize, or at least bring it closer to the later one, to avoid unnecessary write amplification. Signed-off-by: Michael Heimpold <mhei@heimpold.de> SVN-Revision: 40921
		
			
				
	
	
		
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Index: genext2fs/m4/ac_func_scanf_can_malloc.m4
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===================================================================
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--- genext2fs.orig/m4/ac_func_scanf_can_malloc.m4	2011-09-03 21:28:49.000000000 +0200
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+++ genext2fs/m4/ac_func_scanf_can_malloc.m4	2011-09-03 21:29:41.000000000 +0200
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@@ -9,7 +9,7 @@
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 # --------------------------------------
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 AC_DEFUN([AC_FUNC_SCANF_CAN_MALLOC],
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   [ AC_CHECK_HEADERS([stdlib.h])
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-    AC_CACHE_CHECK([whether scanf can malloc], [ac_scanf_can_malloc],
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+    AC_CACHE_CHECK([whether scanf can malloc], [ac_cv_func_scanf_can_malloc],
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     [ AC_RUN_IFELSE(
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       [ AC_LANG_PROGRAM(
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         [
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