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[PATCH] Add retain_initrd boot option

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Add retain_initrd option to control freeing of initrd memory after
extraction.  By default, free memory as previously.

The first boot will need to hold a copy of the in memory fs for the second
boot.  This image can be large (much larger than the kernel), hence we can
save time when the memory loader is slow.  Also, it reduces the memory
footprint while extracting the first boot since you don't need another copy
of the fs.

Signed-off-by: Michael Neuling <[email protected]>
Cc: "Randy.Dunlap" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Michael Neuling 2007-02-10 01:44:33 -08:00 • committed by Linus Torvalds
commit 0a7b35cb18
2 changed files with 18 additions and 1 deletions
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2
Documentation/kernel-parameters.txt
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@ -1396,6 +1396,8 @@ and is between 256 and 4096 characters. It is defined in the file
in <PAGE_SIZE> units (needed only for swap files).
See Documentation/power/swsusp-and-swap-files.txt
retain_initrd [RAM] Keep initrd memory after extraction
rhash_entries= [KNL,NET]
Set number of hash buckets for route cache