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This patch adds an interface to set/reset flags which determines each memory segment should be dumped or not when a core file is generated. /proc/<pid>/coredump_filter file is provided to access the flags. You can change the flag status for a particular process by writing to or reading from the file. The flag status is inherited to the child process when it is created. Signed-off-by: Hidehiro Kawai <[email protected]> Cc: Alan Cox <[email protected]> Cc: David Howells <[email protected]> Cc: Hugh Dickins <[email protected]> Cc: Nick Piggin <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>