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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-18 14:08:58 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-18 14:08:58 -0700 |
| commit | 02730d3c053a9af1d402e1c8dc8bbbc5a1340406 (patch) | |
| tree | db289a08de50eb4b5caf7840d5b7356ddfa1c51f /fs/ext4/extents.c | |
| parent | 77232f791e0605521a978cbe7f79a93df24df374 (diff) | |
| parent | e26081808edadfd257c6c9d81014e3b25e9a6118 (diff) | |
| download | lwn-02730d3c053a9af1d402e1c8dc8bbbc5a1340406.tar.gz lwn-02730d3c053a9af1d402e1c8dc8bbbc5a1340406.zip | |
Merge 4.1-rc4 into tty-next
This resolves some tty driver merge issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ext4/extents.c')
| -rw-r--r-- | fs/ext4/extents.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index d74e08029643..e003a1e81dc3 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -377,7 +377,7 @@ static int ext4_valid_extent(struct inode *inode, struct ext4_extent *ext) ext4_lblk_t lblock = le32_to_cpu(ext->ee_block); ext4_lblk_t last = lblock + len - 1; - if (lblock > last) + if (len == 0 || lblock > last) return 0; return ext4_data_block_valid(EXT4_SB(inode->i_sb), block, len); } @@ -5396,6 +5396,14 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) loff_t new_size, ioffset; int ret; + /* + * We need to test this early because xfstests assumes that a + * collapse range of (0, 1) will return EOPNOTSUPP if the file + * system does not support collapse range. + */ + if (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) + return -EOPNOTSUPP; + /* Collapse range works only on fs block size aligned offsets. */ if (offset & (EXT4_CLUSTER_SIZE(sb) - 1) || len & (EXT4_CLUSTER_SIZE(sb) - 1)) |