diff options
| author | Josef Bacik <josef@redhat.com> | 2011-07-18 13:21:37 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-07-20 20:47:57 -0400 |
| commit | c334b1138bd44bea578eab7971c59bd9212a1093 (patch) | |
| tree | a91a04ce72a4f12bdb6c8ca26400a466dcce5120 /fs/ext4 | |
| parent | b26751575a9aa55fd6dbf3febde3ff06dfadc44f (diff) | |
| download | linux-c334b1138bd44bea578eab7971c59bd9212a1093.tar.bz2 | |
Ext4: handle SEEK_HOLE/SEEK_DATA generically
Since Ext4 has its own lseek we need to make sure it handles
SEEK_HOLE/SEEK_DATA. For now just do the same thing that is done in the generic
case, somebody else can come along and make it do fancy things later. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/file.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 2c0972322009..ce766f974b1d 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -236,6 +236,27 @@ loff_t ext4_llseek(struct file *file, loff_t offset, int origin) } offset += file->f_pos; break; + case SEEK_DATA: + /* + * In the generic case the entire file is data, so as long as + * offset isn't at the end of the file then the offset is data. + */ + if (offset >= inode->i_size) { + mutex_unlock(&inode->i_mutex); + return -ENXIO; + } + break; + case SEEK_HOLE: + /* + * There is a virtual hole at the end of the file, so as long as + * offset isn't i_size or larger, return i_size. + */ + if (offset >= inode->i_size) { + mutex_unlock(&inode->i_mutex); + return -ENXIO; + } + offset = inode->i_size; + break; } if (offset < 0 || offset > maxbytes) { |