system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-07-24 03:59:21 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

udf: Fix reading of in-ICB files

Browse source 
After merging address space operations of normal and in-ICB files,
readahead could get called for in-ICB files which resulted in
udf_get_block() being called for these files. udf_get_block() is not
prepared to be called for in-ICB files and ends up returning garbage
results as it interprets file data as extent list. Fix the problem by
skipping readahead for in-ICB files.

Fixes: 37a8a39f7a ("udf: Switch to single address_space_operations")
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2023-02-28 12:00:25 +01:00
parent 49854d3ccc
commit cecb1f0654
1 changed files with 9 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
fs/udf/inode.c
View file

@ -241,6 +241,15 @@ static int udf_read_folio(struct file *file, struct folio *folio)
static void udf_readahead(struct readahead_control *rac)
{
struct udf_inode_info *iinfo = UDF_I(rac->mapping->host);
/*
* No readahead needed for in-ICB files and udf_get_block() would get
* confused for such file anyway.
*/
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
return;
mpage_readahead(rac, udf_get_block);
}