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authorHugh Dickins <hugh@veritas.com>2009-04-13 14:40:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-13 15:04:33 -0700
commitcaefba1740d8016e6dfe8fda84f85bdcb8f8c85d (patch)
tree78a74e7a42b94ac83c736849c46767b7efeb8ef1 /fs/ext2
parent61609d01cbb3ab865c8cccaf85e6837c47096480 (diff)
shmem: respect MAX_LFS_FILESIZE
SHMEM_MAX_BYTES was derived from the maximum size of its triple-indirect swap vector, forgetting to take the MAX_LFS_FILESIZE limit into account. Never mind 256kB pages, even 8kB pages on 32-bit kernels allowed files to grow slightly bigger than that supposed maximum. Fix this by using the min of both (at build time not run time). And it happens that this calculation is good as far as 8MB pages on 32-bit or 16MB pages on 64-bit: though SHMSWP_MAX_INDEX gets truncated before that, it's truncated to such large numbers that we don't need to care. [akpm@linux-foundation.org: it needs pagemap.h] [akpm@linux-foundation.org: fix sparc64 min() warnings] Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: Yuri Tikhonov <yur@emcraft.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext2')
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