[PATCH] Fix rewriting on a full reiserfs filesystem
Allow rewriting of a file and extending a file upto the end of the
allocated block on a full filesystem.
From: Chris Mason <mason@suse.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index 2695011..f6860e8 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -1284,10 +1284,11 @@
reiserfs_claim_blocks_to_be_allocated(inode->i_sb, num_pages << (PAGE_CACHE_SHIFT - inode->i_blkbits));
reiserfs_write_unlock(inode->i_sb);
- if ( !num_pages ) { /* If we do not have enough space even for */
- res = -ENOSPC; /* single page, return -ENOSPC */
- if ( pos > (inode->i_size & (inode->i_sb->s_blocksize-1)))
- break; // In case we are writing past the file end, break.
+ if ( !num_pages ) { /* If we do not have enough space even for a single page... */
+ if ( pos > inode->i_size+inode->i_sb->s_blocksize-(pos & (inode->i_sb->s_blocksize-1))) {
+ res = -ENOSPC;
+ break; // In case we are writing past the end of the last file block, break.
+ }
// Otherwise we are possibly overwriting the file, so
// let's set write size to be equal or less than blocksize.
// This way we get it correctly for file holes.