diff options
Diffstat (limited to 'fs/jffs2')
| -rw-r--r-- | fs/jffs2/fs.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index e26ea78c789..9dafb53fb1d 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -36,6 +36,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) unsigned int ivalid; uint32_t alloclen; int ret; + int alloc_type = ALLOC_NORMAL; D1(printk(KERN_DEBUG "jffs2_setattr(): ino #%lu\n", inode->i_ino)); @@ -115,6 +116,10 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) ri->compr = JFFS2_COMPR_ZERO; ri->dsize = cpu_to_je32(iattr->ia_size - inode->i_size); ri->offset = cpu_to_je32(inode->i_size); + } else if (ivalid & ATTR_SIZE && !iattr->ia_size) { + /* For truncate-to-zero, treat it as deletion because + it'll always be obsoleting all previous nodes */ + alloc_type = ALLOC_DELETION; } ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8)); if (mdatalen) @@ -122,7 +127,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) else ri->data_crc = cpu_to_je32(0); - new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, ALLOC_NORMAL); + new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, alloc_type); if (S_ISLNK(inode->i_mode)) kfree(mdata); @@ -149,6 +154,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) if (ivalid & ATTR_SIZE && inode->i_size < iattr->ia_size) { jffs2_add_full_dnode_to_inode(c, f, new_metadata); inode->i_size = iattr->ia_size; + inode->i_blocks = (inode->i_size + 511) >> 9; f->metadata = NULL; } else { f->metadata = new_metadata; @@ -167,8 +173,10 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) We are protected from a simultaneous write() extending i_size back past iattr->ia_size, because do_truncate() holds the generic inode semaphore. */ - if (ivalid & ATTR_SIZE && inode->i_size > iattr->ia_size) - vmtruncate(inode, iattr->ia_size); + if (ivalid & ATTR_SIZE && inode->i_size > iattr->ia_size) { + vmtruncate(inode, iattr->ia_size); + inode->i_blocks = (inode->i_size + 511) >> 9; + } return 0; } |