diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2009-06-22 10:12:14 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-07-02 16:50:51 -0700 |
| commit | 1a8fdf7190c4986c4e5e782211462afd8ce25c5b (patch) | |
| tree | 5da6b8d35dd6d25140f44829aa6447e98b961ec3 /mm | |
| parent | bac9d5bcb7666d4d6429b4dd00dc8f19295046a9 (diff) | |
dm: use i_size_read
commit 5657e8fa45cf230df278040c420fb80e06309d8f upstream.
Use i_size_read() instead of reading i_size.
If someone changes the size of the device simultaneously, i_size_read
is guaranteed to return a valid value (either the old one or the new one).
i_size can return some intermediate invalid value (on 32-bit computers
with 64-bit i_size, the reads to both halves of i_size can be interleaved
with updates to i_size, resulting in garbage being returned).
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions