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wrappers for ->i_mutex access

Browse source 
parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested},
inode_foo(inode) being mutex_foo(&inode->i_mutex).

Please, use those for access to ->i_mutex; over the coming cycle
->i_mutex will become rwsem, with ->lookup() done with it held
only shared.

Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2016-01-22 15:40:57 -05:00
commit 5955102c99
177 changed files with 908 additions and 883 deletions
Download patch file Download diff file Expand all files Collapse all files

10
fs/udf/file.c
View file

@ -122,7 +122,7 @@ static ssize_t udf_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
struct udf_inode_info *iinfo = UDF_I(inode);
int err;
mutex_lock(&inode->i_mutex);
inode_lock(inode);
retval = generic_write_checks(iocb, from);
if (retval <= 0)
@ -136,7 +136,7 @@ static ssize_t udf_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
(udf_file_entry_alloc_offset(inode) + end)) {
err = udf_expand_file_adinicb(inode);
if (err) {
mutex_unlock(&inode->i_mutex);
inode_unlock(inode);
udf_debug("udf_expand_adinicb: err=%d\n", err);
return err;
}
@ -149,7 +149,7 @@ static ssize_t udf_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
retval = __generic_file_write_iter(iocb, from);
out:
mutex_unlock(&inode->i_mutex);
inode_unlock(inode);
if (retval > 0) {
mark_inode_dirty(inode);
@ -223,12 +223,12 @@ static int udf_release_file(struct inode *inode, struct file *filp)
* Grab i_mutex to avoid races with writes changing i_size
* while we are running.
*/
mutex_lock(&inode->i_mutex);
inode_lock(inode);
down_write(&UDF_I(inode)->i_data_sem);
udf_discard_prealloc(inode);
udf_truncate_tail_extent(inode);
up_write(&UDF_I(inode)->i_data_sem);
mutex_unlock(&inode->i_mutex);
inode_unlock(inode);
}
return 0;
}

2
fs/udf/inode.c
View file

@ -262,7 +262,7 @@ int udf_expand_file_adinicb(struct inode *inode)
.nr_to_write = 1,
};
WARN_ON_ONCE(!mutex_is_locked(&inode->i_mutex));
WARN_ON_ONCE(!inode_is_locked(inode));
if (!iinfo->i_lenAlloc) {
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;