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First thing mm.h does is including sched.h solely for can_do_mlock() inline function which has "current" dereference inside. By dealing with can_do_mlock() mm.h can be detached from sched.h which is good. See below, why. This patch a) removes unconditional inclusion of sched.h from mm.h b) makes can_do_mlock() normal function in mm/mlock.c c) exports can_do_mlock() to not break compilation d) adds sched.h inclusions back to files that were getting it indirectly. e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were getting them indirectly Net result is: a) mm.h users would get less code to open, read, preprocess, parse, ... if they don't need sched.h b) sched.h stops being dependency for significant number of files: on x86_64 allmodconfig touching sched.h results in recompile of 4083 files, after patch it's only 3744 (-8.3%). Cross-compile tested on all arm defconfigs, all mips defconfigs, all powerpc defconfigs, alpha alpha-up arm i386 i386-up i386-defconfig i386-allnoconfig ia64 ia64-up m68k mips parisc parisc-up powerpc powerpc-up s390 s390-up sparc sparc-up sparc64 sparc64-up um-x86_64 x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig as well as my two usual configs. Signed-off-by: Alexey Dobriyan <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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Alexey Dobriyan
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Linus Torvalds
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May 21, 2007
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#include <linux/mm.h> | ||
#include <linux/dma-mapping.h> | ||
#include <linux/sched.h> | ||
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#include "uverbs.h" | ||
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*/ | ||
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#include <linux/hardirq.h> | ||
#include <linux/sched.h> | ||
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#include <asm/io.h> | ||
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#include <linux/mm.h> | ||
#include <linux/scatterlist.h> | ||
#include <linux/sched.h> | ||
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#include <asm/page.h> | ||
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#include <linux/string.h> | ||
#include <linux/slab.h> | ||
#include <linux/sched.h> | ||
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#include <asm/io.h> | ||
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@@ -34,6 +34,7 @@ | |
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#include <linux/slab.h> | ||
#include <linux/string.h> | ||
#include <linux/sched.h> | ||
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#include <asm/io.h> | ||
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* | ||
* Common management module | ||
*/ | ||
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#include <linux/sched.h> | ||
#include "megaraid_mm.h" | ||
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