diff options
author | Jan Kara <jack@suse.cz> | 2023-01-24 14:13:57 +0300 |
---|---|---|
committer | Jan Kara <jack@suse.cz> | 2023-01-26 18:46:36 +0300 |
commit | c694e40ba231e854fcddd25cce46db3918fca291 (patch) | |
tree | de802f5fd616a1cef0c0e1c6e99074849902f618 | |
parent | 60b99a1b9fa731453e1b69a3e0b3e4dcab7a6ea5 (diff) | |
download | linux-c694e40ba231e854fcddd25cce46db3918fca291.tar.xz |
udf: Convert all file types to use udf_write_end()
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, create udf_write_end() function that is able to handle both
normal and in-ICB files.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
-rw-r--r-- | fs/udf/file.c | 16 | ||||
-rw-r--r-- | fs/udf/inode.c | 22 | ||||
-rw-r--r-- | fs/udf/udfdecl.h | 3 |
3 files changed, 25 insertions, 16 deletions
diff --git a/fs/udf/file.c b/fs/udf/file.c index 16aecf4b2387..8a37cd593883 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -57,27 +57,13 @@ void udf_adinicb_readpage(struct page *page) kunmap_atomic(kaddr); } -static int udf_adinicb_write_end(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned copied, - struct page *page, void *fsdata) -{ - struct inode *inode = page->mapping->host; - loff_t last_pos = pos + copied; - if (last_pos > inode->i_size) - i_size_write(inode, last_pos); - set_page_dirty(page); - unlock_page(page); - put_page(page); - return copied; -} - const struct address_space_operations udf_adinicb_aops = { .dirty_folio = block_dirty_folio, .invalidate_folio = block_invalidate_folio, .read_folio = udf_read_folio, .writepages = udf_writepages, .write_begin = udf_write_begin, - .write_end = udf_adinicb_write_end, + .write_end = udf_write_end, .direct_IO = udf_direct_IO, }; diff --git a/fs/udf/inode.c b/fs/udf/inode.c index afe061d2020e..094ac6f22c72 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -257,6 +257,26 @@ int udf_write_begin(struct file *file, struct address_space *mapping, return 0; } +int udf_write_end(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *page, void *fsdata) +{ + struct inode *inode = file_inode(file); + loff_t last_pos; + + if (UDF_I(inode)->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) + return generic_write_end(file, mapping, pos, len, copied, page, + fsdata); + last_pos = pos + copied; + if (last_pos > inode->i_size) + i_size_write(inode, last_pos); + set_page_dirty(page); + unlock_page(page); + put_page(page); + + return copied; +} + ssize_t udf_direct_IO(struct kiocb *iocb, struct iov_iter *iter) { struct file *file = iocb->ki_filp; @@ -286,7 +306,7 @@ const struct address_space_operations udf_aops = { .readahead = udf_readahead, .writepages = udf_writepages, .write_begin = udf_write_begin, - .write_end = generic_write_end, + .write_end = udf_write_end, .direct_IO = udf_direct_IO, .bmap = udf_bmap, .migrate_folio = buffer_migrate_folio, diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h index 32decf6b6a21..304c2ec81589 100644 --- a/fs/udf/udfdecl.h +++ b/fs/udf/udfdecl.h @@ -164,6 +164,9 @@ int udf_writepages(struct address_space *mapping, struct writeback_control *wbc) int udf_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, struct page **pagep, void **fsdata); +int udf_write_end(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *page, void *fsdata); ssize_t udf_direct_IO(struct kiocb *iocb, struct iov_iter *iter); extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *, struct kernel_lb_addr *, uint32_t *, sector_t *); |