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authorJan Kara <jack@suse.cz>2023-01-24 13:40:28 +0300
committerJan Kara <jack@suse.cz>2023-01-26 18:46:35 +0300
commitb7c31e6f14779324a39927cdaf493dc193576da1 (patch)
tree6a57efdcbdc9abed0d397867083e96654207217a /fs/udf
parentf54aa97fb7e5329a373f9df4e5e213ced4fc8759 (diff)
downloadlinux-b7c31e6f14779324a39927cdaf493dc193576da1.tar.xz
udf: Unify .read_folio for normal and in-ICB files
Switching address_space_operations while a file is used is difficult to do in a race-free way. To be able to use single address_space_operations in UDF, make udf_read_folio() handle both normal and in-ICB files. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/udf')
-rw-r--r--fs/udf/file.c15
-rw-r--r--fs/udf/inode.c9
-rw-r--r--fs/udf/udfdecl.h2
3 files changed, 13 insertions, 13 deletions
diff --git a/fs/udf/file.c b/fs/udf/file.c
index 322115c8369d..2666234a5204 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -38,7 +38,7 @@
#include "udf_i.h"
#include "udf_sb.h"
-static void __udf_adinicb_readpage(struct page *page)
+void udf_adinicb_readpage(struct page *page)
{
struct inode *inode = page->mapping->host;
char *kaddr;
@@ -57,15 +57,6 @@ static void __udf_adinicb_readpage(struct page *page)
kunmap_atomic(kaddr);
}
-static int udf_adinicb_read_folio(struct file *file, struct folio *folio)
-{
- BUG_ON(!folio_test_locked(folio));
- __udf_adinicb_readpage(&folio->page);
- folio_unlock(folio);
-
- return 0;
-}
-
static int udf_adinicb_writepage(struct page *page,
struct writeback_control *wbc)
{
@@ -100,7 +91,7 @@ static int udf_adinicb_write_begin(struct file *file,
*pagep = page;
if (!PageUptodate(page))
- __udf_adinicb_readpage(page);
+ udf_adinicb_readpage(page);
return 0;
}
@@ -127,7 +118,7 @@ static int udf_adinicb_write_end(struct file *file, struct address_space *mappin
const struct address_space_operations udf_adinicb_aops = {
.dirty_folio = block_dirty_folio,
.invalidate_folio = block_invalidate_folio,
- .read_folio = udf_adinicb_read_folio,
+ .read_folio = udf_read_folio,
.writepage = udf_adinicb_writepage,
.write_begin = udf_adinicb_write_begin,
.write_end = udf_adinicb_write_end,
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index ee440d16411e..a1816f067c14 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -191,8 +191,15 @@ static int udf_writepages(struct address_space *mapping,
return mpage_writepages(mapping, wbc, udf_get_block_wb);
}
-static int udf_read_folio(struct file *file, struct folio *folio)
+int udf_read_folio(struct file *file, struct folio *folio)
{
+ struct udf_inode_info *iinfo = UDF_I(file_inode(file));
+
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ udf_adinicb_readpage(&folio->page);
+ folio_unlock(folio);
+ return 0;
+ }
return mpage_read_folio(folio, udf_get_block);
}
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index 5ba59ab90d48..6b93b393cb46 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -138,6 +138,7 @@ static inline unsigned int udf_dir_entry_len(struct fileIdentDesc *cfi)
/* file.c */
extern long udf_ioctl(struct file *, unsigned int, unsigned long);
+void udf_adinicb_readpage(struct page *page);
/* inode.c */
extern struct inode *__udf_iget(struct super_block *, struct kernel_lb_addr *,
@@ -158,6 +159,7 @@ extern struct buffer_head *udf_bread(struct inode *inode, udf_pblk_t block,
extern int udf_setsize(struct inode *, loff_t);
extern void udf_evict_inode(struct inode *);
extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
+int udf_read_folio(struct file *file, struct folio *folio);
extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
struct kernel_lb_addr *, uint32_t *, sector_t *);
int udf_get_block(struct inode *, sector_t, struct buffer_head *, int);