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authorTheodore Ts'o <tytso@mit.edu>2019-08-24 05:38:00 +0300
committerTheodore Ts'o <tytso@mit.edu>2019-08-24 05:38:00 +0300
commitc1e8220bd316d8ae8e524df39534b8a412a45d5e (patch)
tree4f050baad2461c6a09de2e413164796f069cf7bc /fs/ext4/inode.c
parent8fcc3a580651cceb94a9f48e1914491400d5146b (diff)
downloadlinux-c1e8220bd316d8ae8e524df39534b8a412a45d5e.tar.xz
ext4: fix punch hole for inline_data file systems
If a program attempts to punch a hole on an inline data file, we need to convert it to a normal file first. This was detected using ext4/032 using the adv configuration. Simple reproducer: mke2fs -Fq -t ext4 -O inline_data /dev/vdc mount /vdc echo "" > /vdc/testfile xfs_io -c 'truncate 33554432' /vdc/testfile xfs_io -c 'fpunch 0 1048576' /vdc/testfile umount /vdc e2fsck -fy /dev/vdc Cc: stable@vger.kernel.org Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/inode.c')
-rw-r--r--fs/ext4/inode.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 2b1c58da8d1e..e567f0229d4e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4236,6 +4236,15 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
trace_ext4_punch_hole(inode, offset, length, 0);
+ ext4_clear_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA);
+ if (ext4_has_inline_data(inode)) {
+ down_write(&EXT4_I(inode)->i_mmap_sem);
+ ret = ext4_convert_inline_data(inode);
+ up_write(&EXT4_I(inode)->i_mmap_sem);
+ if (ret)
+ return ret;
+ }
+
/*
* Write out all dirty pages to avoid race conditions
* Then release them.