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Diffstat (limited to 'fs/ext4/extents.c')
-rw-r--r--fs/ext4/extents.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 92ad64b89d9b..c33e0a2cb6c3 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4474,6 +4474,7 @@ static long ext4_zero_range(struct file *file, loff_t offset,
loff_t len, int mode)
{
struct inode *inode = file_inode(file);
+ struct address_space *mapping = file->f_mapping;
handle_t *handle = NULL;
unsigned int max_blocks;
loff_t new_size = 0;
@@ -4560,17 +4561,17 @@ static long ext4_zero_range(struct file *file, loff_t offset,
* Prevent page faults from reinstantiating pages we have
* released from page cache.
*/
- down_write(&EXT4_I(inode)->i_mmap_sem);
+ filemap_invalidate_lock(mapping);
ret = ext4_break_layouts(inode);
if (ret) {
- up_write(&EXT4_I(inode)->i_mmap_sem);
+ filemap_invalidate_unlock(mapping);
goto out_mutex;
}
ret = ext4_update_disksize_before_punch(inode, offset, len);
if (ret) {
- up_write(&EXT4_I(inode)->i_mmap_sem);
+ filemap_invalidate_unlock(mapping);
goto out_mutex;
}
/* Now release the pages and zero block aligned part of pages */
@@ -4579,7 +4580,7 @@ static long ext4_zero_range(struct file *file, loff_t offset,
ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size,
flags);
- up_write(&EXT4_I(inode)->i_mmap_sem);
+ filemap_invalidate_unlock(mapping);
if (ret)
goto out_mutex;
}
@@ -5221,6 +5222,7 @@ out:
static int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len)
{
struct super_block *sb = inode->i_sb;
+ struct address_space *mapping = inode->i_mapping;
ext4_lblk_t punch_start, punch_stop;
handle_t *handle;
unsigned int credits;
@@ -5274,7 +5276,7 @@ static int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len)
* Prevent page faults from reinstantiating pages we have released from
* page cache.
*/
- down_write(&EXT4_I(inode)->i_mmap_sem);
+ filemap_invalidate_lock(mapping);
ret = ext4_break_layouts(inode);
if (ret)
@@ -5289,15 +5291,15 @@ static int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len)
* Write tail of the last page before removed range since it will get
* removed from the page cache below.
*/
- ret = filemap_write_and_wait_range(inode->i_mapping, ioffset, offset);
+ ret = filemap_write_and_wait_range(mapping, ioffset, offset);
if (ret)
goto out_mmap;
/*
* Write data that will be shifted to preserve them when discarding
* page cache below. We are also protected from pages becoming dirty
- * by i_mmap_sem.
+ * by i_rwsem and invalidate_lock.
*/
- ret = filemap_write_and_wait_range(inode->i_mapping, offset + len,
+ ret = filemap_write_and_wait_range(mapping, offset + len,
LLONG_MAX);
if (ret)
goto out_mmap;
@@ -5350,7 +5352,7 @@ out_stop:
ext4_journal_stop(handle);
ext4_fc_stop_ineligible(sb);
out_mmap:
- up_write(&EXT4_I(inode)->i_mmap_sem);
+ filemap_invalidate_unlock(mapping);
out_mutex:
inode_unlock(inode);
return ret;
@@ -5367,6 +5369,7 @@ out_mutex:
static int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len)
{
struct super_block *sb = inode->i_sb;
+ struct address_space *mapping = inode->i_mapping;
handle_t *handle;
struct ext4_ext_path *path;
struct ext4_extent *extent;
@@ -5425,7 +5428,7 @@ static int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len)
* Prevent page faults from reinstantiating pages we have released from
* page cache.
*/
- down_write(&EXT4_I(inode)->i_mmap_sem);
+ filemap_invalidate_lock(mapping);
ret = ext4_break_layouts(inode);
if (ret)
@@ -5526,7 +5529,7 @@ out_stop:
ext4_journal_stop(handle);
ext4_fc_stop_ineligible(sb);
out_mmap:
- up_write(&EXT4_I(inode)->i_mmap_sem);
+ filemap_invalidate_unlock(mapping);
out_mutex:
inode_unlock(inode);
return ret;