diff options
author | Bernhard Walle <bwalle@suse.de> | 2008-02-07 03:15:17 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 11:42:25 -0500 |
commit | 72a7fe3967dbf86cb34e24fbf1d957fe24d2f246 (patch) | |
tree | c19f7d0b530577359840e959cce204939caf0649 /arch/ia64/mm/contig.c | |
parent | 25fad945a7f7ff2cf06e437381c6a1121784dbd9 (diff) |
Introduce flags for reserve_bootmem()
This patchset adds a flags variable to reserve_bootmem() and uses the
BOOTMEM_EXCLUSIVE flag in crashkernel reservation code to detect collisions
between crashkernel area and already used memory.
This patch:
Change the reserve_bootmem() function to accept a new flag BOOTMEM_EXCLUSIVE.
If that flag is set, the function returns with -EBUSY if the memory already
has been reserved in the past. This is to avoid conflicts.
Because that code runs before SMP initialisation, there's no race condition
inside reserve_bootmem_core().
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix powerpc build]
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Cc: <linux-arch@vger.kernel.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/ia64/mm/contig.c')
-rw-r--r-- | arch/ia64/mm/contig.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c index 7e9c275ea148..344f64eca7a9 100644 --- a/arch/ia64/mm/contig.c +++ b/arch/ia64/mm/contig.c | |||
@@ -218,7 +218,7 @@ find_memory (void) | |||
218 | 218 | ||
219 | /* Free all available memory, then mark bootmem-map as being in use. */ | 219 | /* Free all available memory, then mark bootmem-map as being in use. */ |
220 | efi_memmap_walk(filter_rsvd_memory, free_bootmem); | 220 | efi_memmap_walk(filter_rsvd_memory, free_bootmem); |
221 | reserve_bootmem(bootmap_start, bootmap_size); | 221 | reserve_bootmem(bootmap_start, bootmap_size, BOOTMEM_DEFAULT); |
222 | 222 | ||
223 | find_initrd(); | 223 | find_initrd(); |
224 | 224 | ||