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| author | Ross Zwisler <ross.zwisler@linux.intel.com> | 2018-07-29 17:00:22 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2018-07-29 17:00:22 -0400 |
| commit | 430657b6be896db57d974375cc499ca212c7f01d (patch) | |
| tree | ba4489c4000ac7946de998f9f6a5cd2a3834d283 /fs/ext4/ext4.h | |
| parent | cdbf8897cb09b7baf2b8a7e78051a35a872b01d5 (diff) | |
| download | lwn-430657b6be896db57d974375cc499ca212c7f01d.tar.gz lwn-430657b6be896db57d974375cc499ca212c7f01d.zip | |
ext4: handle layout changes to pinned DAX mappings
Follow the lead of xfs_break_dax_layouts() and add synchronization between
operations in ext4 which remove blocks from an inode (hole punch, truncate
down, etc.) and pages which are pinned due to DAX DMA operations.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 6d7dec48372b..1fc013f3d944 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2459,6 +2459,7 @@ extern int ext4_get_inode_loc(struct inode *, struct ext4_iloc *); extern int ext4_inode_attach_jinode(struct inode *inode); extern int ext4_can_truncate(struct inode *inode); extern int ext4_truncate(struct inode *); +extern int ext4_break_layouts(struct inode *); extern int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length); extern int ext4_truncate_restart_trans(handle_t *, struct inode *, int nblocks); extern void ext4_set_inode_flags(struct inode *); |