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-rw-r--r--fs/udf/file.c8
-rw-r--r--fs/udf/inode.c21
-rw-r--r--fs/udf/super.c6
3 files changed, 27 insertions, 8 deletions
diff --git a/fs/udf/file.c b/fs/udf/file.c
index 2a346bb..3438b00 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -125,7 +125,6 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
err = udf_expand_file_adinicb(inode);
if (err) {
udf_debug("udf_expand_adinicb: err=%d\n", err);
- up_write(&iinfo->i_data_sem);
return err;
}
} else {
@@ -133,9 +132,10 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
iinfo->i_lenAlloc = pos + count;
else
iinfo->i_lenAlloc = inode->i_size;
+ up_write(&iinfo->i_data_sem);
}
- }
- up_write(&iinfo->i_data_sem);
+ } else
+ up_write(&iinfo->i_data_sem);
retval = generic_file_aio_write(iocb, iov, nr_segs, ppos);
if (retval > 0)
@@ -201,12 +201,10 @@ out:
static int udf_release_file(struct inode *inode, struct file *filp)
{
if (filp->f_mode & FMODE_WRITE) {
- mutex_lock(&inode->i_mutex);
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);
}
return 0;
}
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 1d1358e..262050f 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -145,6 +145,12 @@ const struct address_space_operations udf_aops = {
.bmap = udf_bmap,
};
+/*
+ * Expand file stored in ICB to a normal one-block-file
+ *
+ * This function requires i_data_sem for writing and releases it.
+ * This function requires i_mutex held
+ */
int udf_expand_file_adinicb(struct inode *inode)
{
struct page *page;
@@ -163,9 +169,15 @@ int udf_expand_file_adinicb(struct inode *inode)
iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
/* from now on we have normal address_space methods */
inode->i_data.a_ops = &udf_aops;
+ up_write(&iinfo->i_data_sem);
mark_inode_dirty(inode);
return 0;
}
+ /*
+ * Release i_data_sem so that we can lock a page - page lock ranks
+ * above i_data_sem. i_mutex still protects us against file changes.
+ */
+ up_write(&iinfo->i_data_sem);
page = find_or_create_page(inode->i_mapping, 0, GFP_NOFS);
if (!page)
@@ -181,6 +193,7 @@ int udf_expand_file_adinicb(struct inode *inode)
SetPageUptodate(page);
kunmap(page);
}
+ down_write(&iinfo->i_data_sem);
memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0x00,
iinfo->i_lenAlloc);
iinfo->i_lenAlloc = 0;
@@ -190,17 +203,20 @@ int udf_expand_file_adinicb(struct inode *inode)
iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
/* from now on we have normal address_space methods */
inode->i_data.a_ops = &udf_aops;
+ up_write(&iinfo->i_data_sem);
err = inode->i_data.a_ops->writepage(page, &udf_wbc);
if (err) {
/* Restore everything back so that we don't lose data... */
lock_page(page);
kaddr = kmap(page);
+ down_write(&iinfo->i_data_sem);
memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr, kaddr,
inode->i_size);
kunmap(page);
unlock_page(page);
iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
inode->i_data.a_ops = &udf_adinicb_aops;
+ up_write(&iinfo->i_data_sem);
}
page_cache_release(page);
mark_inode_dirty(inode);
@@ -1105,10 +1121,9 @@ int udf_setsize(struct inode *inode, loff_t newsize)
if (bsize <
(udf_file_entry_alloc_offset(inode) + newsize)) {
err = udf_expand_file_adinicb(inode);
- if (err) {
- up_write(&iinfo->i_data_sem);
+ if (err)
return err;
- }
+ down_write(&iinfo->i_data_sem);
} else
iinfo->i_lenAlloc = newsize;
}
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 7b27b06..7f0e18a 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1830,6 +1830,12 @@ static void udf_close_lvid(struct super_block *sb)
le16_to_cpu(lvid->descTag.descCRCLength)));
lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
+ /*
+ * We set buffer uptodate unconditionally here to avoid spurious
+ * warnings from mark_buffer_dirty() when previous EIO has marked
+ * the buffer as !uptodate
+ */
+ set_buffer_uptodate(bh);
mark_buffer_dirty(bh);
sbi->s_lvid_dirty = 0;
mutex_unlock(&sbi->s_alloc_mutex);