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| author | Dmitry Monakhov <dmonakhov@openvz.org> | 2014-07-28 06:28:15 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2014-07-28 06:28:15 +0400 |
| commit | 4b1f1660710c2ddcefc08c289e66a32b6bc2a2e3 (patch) | |
| tree | 915f9288771445a975f5253c6f95fa60d5f11b72 /fs/ext4/extents.c | |
| parent | b27b1535acc0e97b7435bccf205b3fe9c782afac (diff) | |
| download | linux-4b1f1660710c2ddcefc08c289e66a32b6bc2a2e3.tar.xz | |
ext4: add i_data_sem sanity check
Each caller of ext4_ext_dirty must hold i_data_sem,
The only exception is migration code, let's make it convenient.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext4/extents.c')
| -rw-r--r-- | fs/ext4/extents.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index b30172dd55eb..ee93f82630c6 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -161,6 +161,8 @@ int __ext4_ext_dirty(const char *where, unsigned int line, handle_t *handle, struct inode *inode, struct ext4_ext_path *path) { int err; + + WARN_ON(!rwsem_is_locked(&EXT4_I(inode)->i_data_sem)); if (path->p_bh) { ext4_extent_block_csum_set(inode, ext_block_hdr(path->p_bh)); /* path points to block */ |