| commit | bf43d84b185e2ff54598f8c58a5a8e63148b6e90 | |
| author | Eric Sandeen <sandeen@redhat.com> | |
| Tue, 18 Aug 2009 03:48:51 +0000 (17 23:48 -0400) | ||
| committer | Theodore Ts'o <tytso@mit.edu> | |
| Tue, 18 Aug 2009 03:48:51 +0000 (17 23:48 -0400) | ||
| tree | 1e7a7ca7e5d328c41ef6757ea33d709d8e47fcfb | treesnapshot (tar.gz zip) |
| parent | 0ccff1a49def92d6b838a6da166c89004b3a4d0c | commitdiff |
ext4: reject too-large filesystems on 32-bit kernels
ext4 will happily mount a > 16T filesystem on a 32-bit box, but
this is not safe; writes to the block device will wrap past 16T
and the page cache can't index past 16T (232 index * 4k pages).
Adding another test to the existing "too many sectors" test
should do the trick.
Add a comment, a relevant return value, and fix the reference
to the CONFIG_LBD(AF) option as well.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
ext4 will happily mount a > 16T filesystem on a 32-bit box, but
this is not safe; writes to the block device will wrap past 16T
and the page cache can't index past 16T (232 index * 4k pages).
Adding another test to the existing "too many sectors" test
should do the trick.
Add a comment, a relevant return value, and fix the reference
to the CONFIG_LBD(AF) option as well.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| fs/ext4/super.c | diffblobblamehistory |