diff options
Diffstat (limited to 'fs/ocfs2/file.c')
| -rw-r--r-- | fs/ocfs2/file.c | 42 |
1 files changed, 18 insertions, 24 deletions
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 78e245df5e32..fc53ff065364 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -2106,7 +2106,7 @@ out: } static int ocfs2_prepare_inode_for_write(struct file *file, - loff_t *ppos, + loff_t pos, size_t count, int appending, int *direct_io, @@ -2115,7 +2115,7 @@ static int ocfs2_prepare_inode_for_write(struct file *file, int ret = 0, meta_level = 0; struct dentry *dentry = file->f_path.dentry; struct inode *inode = dentry->d_inode; - loff_t saved_pos = 0, end; + loff_t end; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); int full_coherency = !(osb->s_mount_opt & OCFS2_MOUNT_COHERENCY_BUFFERED); @@ -2155,23 +2155,16 @@ static int ocfs2_prepare_inode_for_write(struct file *file, } } - /* work on a copy of ppos until we're sure that we won't have - * to recalculate it due to relocking. */ - if (appending) - saved_pos = i_size_read(inode); - else - saved_pos = *ppos; - - end = saved_pos + count; + end = pos + count; - ret = ocfs2_check_range_for_refcount(inode, saved_pos, count); + ret = ocfs2_check_range_for_refcount(inode, pos, count); if (ret == 1) { ocfs2_inode_unlock(inode, meta_level); meta_level = -1; ret = ocfs2_prepare_inode_for_refcount(inode, file, - saved_pos, + pos, count, &meta_level); if (has_refcount) @@ -2227,7 +2220,7 @@ static int ocfs2_prepare_inode_for_write(struct file *file, * caller will have to retake some cluster * locks and initiate the io as buffered. */ - ret = ocfs2_check_range_for_holes(inode, saved_pos, count); + ret = ocfs2_check_range_for_holes(inode, pos, count); if (ret == 1) { /* * Fallback to old way if the feature bit is not set. @@ -2242,12 +2235,9 @@ static int ocfs2_prepare_inode_for_write(struct file *file, break; } - if (appending) - *ppos = saved_pos; - out_unlock: trace_ocfs2_prepare_inode_for_write(OCFS2_I(inode)->ip_blkno, - saved_pos, appending, count, + pos, appending, count, direct_io, has_refcount); if (meta_level >= 0) @@ -2263,7 +2253,7 @@ static ssize_t ocfs2_file_write_iter(struct kiocb *iocb, int ret, direct_io, appending, rw_level, have_alloc_sem = 0; int can_do_direct, has_refcount = 0; ssize_t written = 0; - size_t count = iov_iter_count(from); + size_t count = iov_iter_count(from), orig_count; loff_t old_size; u32 old_clusters; struct file *file = iocb->ki_filp; @@ -2329,8 +2319,16 @@ relock: ocfs2_inode_unlock(inode, 1); } + orig_count = count; + ret = generic_write_checks(file, &iocb->ki_pos, &count); + if (ret < 0) { + mlog_errno(ret); + goto out; + } + iov_iter_truncate(from, count); + can_do_direct = direct_io; - ret = ocfs2_prepare_inode_for_write(file, &iocb->ki_pos, count, appending, + ret = ocfs2_prepare_inode_for_write(file, iocb->ki_pos, count, appending, &can_do_direct, &has_refcount); if (ret < 0) { mlog_errno(ret); @@ -2351,6 +2349,7 @@ relock: rw_level = -1; direct_io = 0; + iov_iter_reexpand(from, count = orig_count); goto relock; } @@ -2374,11 +2373,6 @@ relock: /* communicate with ocfs2_dio_end_io */ ocfs2_iocb_set_rw_locked(iocb, rw_level); - ret = generic_write_checks(file, &iocb->ki_pos, &count); - if (ret) - goto out_dio; - - iov_iter_truncate(from, count); if (direct_io) { loff_t endbyte; ssize_t written_buffered; |