linux-kernel - [PATCH] hpfs: support FIEMAP

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Date:   Mon, 3 Oct 2016 23:00:19 +0200 (CEST)
From:   Mikulas Patocka <mikulas@...bright.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Alexander Viro <viro@...iv.linux.org.uk>
cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH] hpfs: support FIEMAP

Support the FIEMAP ioctl that reports extents allocated by a file.

Signed-off-by: Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>

---
 fs/hpfs/file.c |    6 ++++++
 1 file changed, 6 insertions(+)

Index: linux-2.6/fs/hpfs/file.c
===================================================================
--- linux-2.6.orig/fs/hpfs/file.c
+++ linux-2.6/fs/hpfs/file.c
@@ -189,6 +189,11 @@ static sector_t _hpfs_bmap(struct addres
 	return generic_block_bmap(mapping, block, hpfs_get_block);
 }
 
+static int hpfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, u64 start, u64 len)
+{
+	return generic_block_fiemap(inode, fieinfo, start, len, hpfs_get_block);
+}
+
 const struct address_space_operations hpfs_aops = {
 	.readpage = hpfs_readpage,
 	.writepage = hpfs_writepage,
@@ -214,4 +219,5 @@ const struct file_operations hpfs_file_o
 const struct inode_operations hpfs_file_iops =
 {
 	.setattr	= hpfs_setattr,
+	.fiemap		= hpfs_fiemap,
 };