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authorChristoph Hellwig <hch@lst.de>2021-07-20 15:33:39 +0200
committerJan Kara <jack@suse.cz>2021-07-27 11:00:32 +0200
commit8b1e7076d26b935af7caec33dee2837c0ad7dbb5 (patch)
treeabf5064afb1bdb0ac5cd00e42e75ae77f1e075ec /fs/ext2
parent9583db2332e3426129612e0ef69f70fbadb6053b (diff)
downloadlinux-8b1e7076d26b935af7caec33dee2837c0ad7dbb5.tar.bz2
ext2: use iomap_fiemap to implement ->fiemap
Switch from generic_block_fiemap to use the iomap version. The only interesting part is that ext2_get_blocks gets confused when being asked for overly long ranges, so copy over the limit to the inode size from generic_block_fiemap into ext2_fiemap. Link: https://lore.kernel.org/r/20210720133341.405438-3-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext2')
-rw-r--r--fs/ext2/Kconfig1
-rw-r--r--fs/ext2/inode.c10
2 files changed, 9 insertions, 2 deletions
diff --git a/fs/ext2/Kconfig b/fs/ext2/Kconfig
index 54eec9185627..1248ff4ef562 100644
--- a/fs/ext2/Kconfig
+++ b/fs/ext2/Kconfig
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config EXT2_FS
tristate "Second extended fs support"
+ select FS_IOMAP
help
Ext2 is a standard Linux file system for hard disks.
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 3e9a04770f49..04f0def0f5eb 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -855,8 +855,14 @@ const struct iomap_ops ext2_iomap_ops = {
int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len)
{
- return generic_block_fiemap(inode, fieinfo, start, len,
- ext2_get_block);
+ int ret;
+
+ inode_lock(inode);
+ len = min_t(u64, len, i_size_read(inode));
+ ret = iomap_fiemap(inode, fieinfo, start, len, &ext2_iomap_ops);
+ inode_unlock(inode);
+
+ return ret;
}
static int ext2_writepage(struct page *page, struct writeback_control *wbc)