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| author | Mike Hommey <mh@glandium.org> | 2009-11-11 23:26:55 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-11-12 16:26:01 +0100 |
| commit | e04b5ef8b49db87d01a9b3a47fe41a918a0c0ff5 (patch) | |
| tree | f643a43591e5d4593e79bafb47b8d3db70346af2 /fs/ioctl.c | |
| parent | pps: events reporting fix up (diff) | |
| download | linux-e04b5ef8b49db87d01a9b3a47fe41a918a0c0ff5.tar.xz linux-e04b5ef8b49db87d01a9b3a47fe41a918a0c0ff5.zip | |
__generic_block_fiemap(): fix for files bigger than 4GB
Because of an integer overflow on start_blk, various kind of wrong results
would be returned by the generic_block_fiemap() handler, such as no
extents when there is a 4GB+ hole at the beginning of the file, or wrong
fe_logical when an extent starts after the first 4GB.
Signed-off-by: Mike Hommey <mh@glandium.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Eric Sandeen <sandeen@sgi.com>
Cc: Josef Bacik <jbacik@redhat.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ioctl.c')
| -rw-r--r-- | fs/ioctl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ioctl.c b/fs/ioctl.c index 7b17a14396ff..6c751106c2e5 100644 --- a/fs/ioctl.c +++ b/fs/ioctl.c @@ -254,7 +254,7 @@ int __generic_block_fiemap(struct inode *inode, u64 len, get_block_t *get_block) { struct buffer_head tmp; - unsigned int start_blk; + unsigned long long start_blk; long long length = 0, map_len = 0; u64 logical = 0, phys = 0, size = 0; u32 flags = FIEMAP_EXTENT_MERGED; |