From 66a10506d632051e1153e2555f4b2c820d427f64 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Wed, 13 Feb 2008 15:55:38 +0900 Subject: [MTD] [OneNAND] Fix unlock all in Double Density Package (DDP) Signed-off-by: Kyungmin Park Signed-off-by: David Woodhouse --- drivers/mtd/onenand/onenand_base.c | 32 +++++++++++++++++--------------- 1 file changed, 17 insertions(+), 15 deletions(-) diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 8d7d21be1541..15a62db656de 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -2052,7 +2052,7 @@ static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len) * * Check lock status */ -static void onenand_check_lock_status(struct onenand_chip *this) +static int onenand_check_lock_status(struct onenand_chip *this) { unsigned int value, block, status; unsigned int end; @@ -2070,9 +2070,13 @@ static void onenand_check_lock_status(struct onenand_chip *this) /* Check lock status */ status = this->read_word(this->base + ONENAND_REG_WP_STATUS); - if (!(status & ONENAND_WP_US)) + if (!(status & ONENAND_WP_US)) { printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status); + return 0; + } } + + return 1; } /** @@ -2081,9 +2085,11 @@ static void onenand_check_lock_status(struct onenand_chip *this) * * Unlock all blocks */ -static int onenand_unlock_all(struct mtd_info *mtd) +static void onenand_unlock_all(struct mtd_info *mtd) { struct onenand_chip *this = mtd->priv; + loff_t ofs = 0; + size_t len = this->chipsize; if (this->options & ONENAND_HAS_UNLOCK_ALL) { /* Set start block address */ @@ -2099,23 +2105,19 @@ static int onenand_unlock_all(struct mtd_info *mtd) & ONENAND_CTRL_ONGO) continue; + /* Check lock status */ + if (onenand_check_lock_status(this)) + return; + /* Workaround for all block unlock in DDP */ if (ONENAND_IS_DDP(this)) { - /* 1st block on another chip */ - loff_t ofs = this->chipsize >> 1; - size_t len = mtd->erasesize; - - onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK); + /* All blocks on another chip */ + ofs = this->chipsize >> 1; + len = this->chipsize >> 1; } - - onenand_check_lock_status(this); - - return 0; } - onenand_do_lock_cmd(mtd, 0x0, this->chipsize, ONENAND_CMD_UNLOCK); - - return 0; + onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK); } #ifdef CONFIG_MTD_ONENAND_OTP -- cgit v1.2.3 From b28ba9fa0154f78f3d36f5ae9a42f7bb01663cca Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Mon, 25 Feb 2008 15:20:50 +0000 Subject: [JFFS2] Set i_blocks when truncating files Addresses OLPC trac #6480 Signed-off-by: David Woodhouse --- fs/jffs2/fs.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index e26ea78c7892..3f49562dc508 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -149,6 +149,7 @@ 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 +168,10 @@ 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; } -- cgit v1.2.3 From dd919660aacdf4adfcd279556aa03e595f7f0fc2 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Mon, 25 Feb 2008 15:25:25 +0000 Subject: [JFFS2] Use ALLOC_DELETION priority for truncation to zero length This is going to obsolete all previous nodes, so treat it as deletion. Signed-off-by: David Woodhouse --- fs/jffs2/fs.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index 3f49562dc508..9dafb53fb1d1 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); -- cgit v1.2.3