From da7797b2ca558347d2f6862ede2ca96a1fee20ce Mon Sep 17 00:00:00 2001 From: juhosg Date: Fri, 6 Jun 2008 12:52:39 +0000 Subject: [kernel] generic-2.6: sync yaffs code with the official CVS tree git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11378 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../linux/generic-2.6/files/fs/yaffs2/yaffs_fs.c | 102 ++++++++++++--------- 1 file changed, 59 insertions(+), 43 deletions(-) (limited to 'target/linux/generic-2.6/files/fs/yaffs2/yaffs_fs.c') diff --git a/target/linux/generic-2.6/files/fs/yaffs2/yaffs_fs.c b/target/linux/generic-2.6/files/fs/yaffs2/yaffs_fs.c index 67001b10e..ab6a3a7e0 100644 --- a/target/linux/generic-2.6/files/fs/yaffs2/yaffs_fs.c +++ b/target/linux/generic-2.6/files/fs/yaffs2/yaffs_fs.c @@ -32,7 +32,7 @@ */ const char *yaffs_fs_c_version = - "$Id: yaffs_fs.c,v 1.63 2007-09-19 20:35:40 imcd Exp $"; + "$Id: yaffs_fs.c,v 1.66 2008-05-05 07:58:58 charles Exp $"; extern const char *yaffs_guts_c_version; #include @@ -53,6 +53,8 @@ extern const char *yaffs_guts_c_version; #include #include +#include "asm/div64.h" + #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) #include /* Added NCB 15-8-2003 */ @@ -753,6 +755,8 @@ static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj) break; } + inode->i_flags |= S_NOATIME; + inode->i_ino = obj->objectId; inode->i_mode = obj->yst_mode; inode->i_uid = obj->yst_uid; @@ -1350,25 +1354,47 @@ static int yaffs_statfs(struct super_block *sb, struct statfs *buf) buf->f_type = YAFFS_MAGIC; buf->f_bsize = sb->s_blocksize; buf->f_namelen = 255; - if (sb->s_blocksize > dev->nDataBytesPerChunk) { - + + if(dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)){ + /* Do this if chunk size is not a power of 2 */ + + uint64_t bytesInDev; + uint64_t bytesFree; + + bytesInDev = ((uint64_t)((dev->endBlock - dev->startBlock +1))) * + ((uint64_t)(dev->nChunksPerBlock * dev->nDataBytesPerChunk)); + + do_div(bytesInDev,sb->s_blocksize); /* bytesInDev becomes the number of blocks */ + buf->f_blocks = bytesInDev; + + bytesFree = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) * + ((uint64_t)(dev->nDataBytesPerChunk)); + + do_div(bytesFree,sb->s_blocksize); + + buf->f_bfree = bytesFree; + + } else if (sb->s_blocksize > dev->nDataBytesPerChunk) { + buf->f_blocks = - (dev->endBlock - dev->startBlock + - 1) * dev->nChunksPerBlock / (sb->s_blocksize / - dev->nDataBytesPerChunk); - buf->f_bfree = - yaffs_GetNumberOfFreeChunks(dev) / (sb->s_blocksize / - dev->nDataBytesPerChunk); + (dev->endBlock - dev->startBlock + 1) * + dev->nChunksPerBlock / + (sb->s_blocksize / dev->nDataBytesPerChunk); + buf->f_bfree = + yaffs_GetNumberOfFreeChunks(dev) / + (sb->s_blocksize / dev->nDataBytesPerChunk); } else { - - buf->f_blocks = - (dev->endBlock - dev->startBlock + - 1) * dev->nChunksPerBlock * (dev->nDataBytesPerChunk / - sb->s_blocksize); - buf->f_bfree = - yaffs_GetNumberOfFreeChunks(dev) * (dev->nDataBytesPerChunk / - sb->s_blocksize); + buf->f_blocks = + (dev->endBlock - dev->startBlock + 1) * + dev->nChunksPerBlock * + (dev->nDataBytesPerChunk / sb->s_blocksize); + + buf->f_bfree = + yaffs_GetNumberOfFreeChunks(dev) * + (dev->nDataBytesPerChunk / sb->s_blocksize); } + + buf->f_files = 0; buf->f_ffree = 0; buf->f_bavail = buf->f_bfree; @@ -1602,6 +1628,7 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, sb->s_magic = YAFFS_MAGIC; sb->s_op = &yaffs_super_ops; + sb->s_flags |= MS_NOATIME; if (!sb) printk(KERN_INFO "yaffs: sb is NULL\n"); @@ -1678,22 +1705,15 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, #ifdef CONFIG_YAFFS_AUTO_YAFFS2 if (yaffsVersion == 1 && -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) - mtd->writesize >= 2048) { -#else - mtd->oobblock >= 2048) { -#endif + WRITE_SIZE(mtd) >= 2048) { T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs2\n")); yaffsVersion = 2; } /* Added NCB 26/5/2006 for completeness */ - if (yaffsVersion == 2 && -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) - mtd->writesize == 512) { -#else - mtd->oobblock == 512) { -#endif + if (yaffsVersion == 2 && + !options.inband_tags && + WRITE_SIZE(mtd) == 512){ T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs1\n")); yaffsVersion = 1; } @@ -1719,12 +1739,9 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, return NULL; } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) - if (mtd->writesize < YAFFS_MIN_YAFFS2_CHUNK_SIZE || -#else - if (mtd->oobblock < YAFFS_MIN_YAFFS2_CHUNK_SIZE || -#endif - mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) { + if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE || + mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) && + !options.inband_tags) { T(YAFFS_TRACE_ALWAYS, ("yaffs: MTD device does not have the " "right page sizes\n")); @@ -1784,9 +1801,10 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, dev->startBlock = 0; dev->endBlock = nBlocks - 1; dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK; - dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK; + dev->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK; dev->nReservedBlocks = 5; dev->nShortOpCaches = (options.no_cache) ? 0 : 10; + dev->inbandTags = options.inband_tags; /* ... and the functions. */ if (yaffsVersion == 2) { @@ -1799,15 +1817,14 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, dev->spareBuffer = YMALLOC(mtd->oobsize); dev->isYaffs2 = 1; #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) - dev->nDataBytesPerChunk = mtd->writesize; + dev->totalBytesPerChunk = mtd->writesize; dev->nChunksPerBlock = mtd->erasesize / mtd->writesize; #else - dev->nDataBytesPerChunk = mtd->oobblock; + dev->totalBytesPerChunk = mtd->oobblock; dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock; #endif nBlocks = mtd->size / mtd->erasesize; - dev->nCheckpointReservedBlocks = CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS; dev->startBlock = 0; dev->endBlock = nBlocks - 1; } else { @@ -1990,12 +2007,12 @@ static char *yaffs_dump_dev(char *buf, yaffs_Device * dev) { buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock); buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock); + buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->totalBytesPerChunk); buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk); buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits); buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize); buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks); buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks); - buf += sprintf(buf, "nCheckptResBlocks.. %d\n", dev->nCheckpointReservedBlocks); buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint); buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated); buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes); @@ -2006,10 +2023,8 @@ static char *yaffs_dump_dev(char *buf, yaffs_Device * dev) buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads); buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures); buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies); - buf += - sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections); - buf += - sprintf(buf, "passiveGCs......... %d\n", + buf += sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections); + buf += sprintf(buf, "passiveGCs......... %d\n", dev->passiveGarbageCollections); buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites); buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches); @@ -2025,6 +2040,7 @@ static char *yaffs_dump_dev(char *buf, yaffs_Device * dev) sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions); buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC); buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2); + buf += sprintf(buf, "inbandTags......... %d\n", dev->inbandTags); return buf; } -- cgit v1.2.3