diff options
Diffstat (limited to 'fs/buffer.c')
| -rw-r--r-- | fs/buffer.c | 37 |
1 files changed, 4 insertions, 33 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index d54812b198e9..559daf76bca4 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -2510,11 +2510,11 @@ static void attach_nobh_buffers(struct page *page, struct buffer_head *head) } /* - * Filesystems implementing the new truncate sequence should use the - * _newtrunc postfix variant which won't incorrectly call vmtruncate. + * On entry, the page is fully not uptodate. + * On exit the page is fully uptodate in the areas outside (from,to) * The filesystem needs to handle block truncation upon failure. */ -int nobh_write_begin_newtrunc(struct file *file, struct address_space *mapping, +int nobh_write_begin(struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata, get_block_t *get_block) @@ -2547,7 +2547,7 @@ int nobh_write_begin_newtrunc(struct file *file, struct address_space *mapping, unlock_page(page); page_cache_release(page); *pagep = NULL; - return block_write_begin_newtrunc(file, mapping, pos, len, + return block_write_begin_newtrunc(NULL, mapping, pos, len, flags, pagep, fsdata, get_block); } @@ -2654,35 +2654,6 @@ out_release: return ret; } -EXPORT_SYMBOL(nobh_write_begin_newtrunc); - -/* - * On entry, the page is fully not uptodate. - * On exit the page is fully uptodate in the areas outside (from,to) - */ -int nobh_write_begin(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned flags, - struct page **pagep, void **fsdata, - get_block_t *get_block) -{ - int ret; - - ret = nobh_write_begin_newtrunc(file, mapping, pos, len, flags, - pagep, fsdata, get_block); - - /* - * prepare_write() may have instantiated a few blocks - * outside i_size. Trim these off again. Don't need - * i_size_read because we hold i_mutex. - */ - if (unlikely(ret)) { - loff_t isize = mapping->host->i_size; - if (pos + len > isize) - vmtruncate(mapping->host, isize); - } - - return ret; -} EXPORT_SYMBOL(nobh_write_begin); int nobh_write_end(struct file *file, struct address_space *mapping, |