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| author | Jan Kara <jack@suse.cz> | 2023-02-28 14:00:25 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2023-03-06 18:38:25 +0300 |
| commit | cecb1f06541e12ec68805dbddb2013ee720dfe3d (patch) | |
| tree | d07ffd1b3154d716b14dfe284db0f087a96d2c0f /fs | |
| parent | 49854d3ccc55efd7e6873e0c39f360bdbe251c51 (diff) | |
| download | linux-cecb1f06541e12ec68805dbddb2013ee720dfe3d.tar.xz | |
udf: Fix reading of in-ICB files
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: 37a8a39f7ad3 ("udf: Switch to single address_space_operations")
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/udf/inode.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c index facaf3a20625..0cb7d8fba2c8 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -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); } |