From 730554d94607572ef8300c5c9848540b42394897 Mon Sep 17 00:00:00 2001 From: "Artem B. Bityutskiy" Date: Sun, 17 Jul 2005 07:56:26 +0100 Subject: [JFFS2] Debug code clean up - step 1 Move debug functions into a seperate source file Signed-off-by: Artem B. Bityutskiy Signed-off-by: Thomas Gleixner --- fs/jffs2/nodelist.h | 106 +++++----------------------------------------------- 1 file changed, 9 insertions(+), 97 deletions(-) (limited to 'fs/jffs2/nodelist.h') diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index b34c397909e..6802e0968d3 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -7,7 +7,7 @@ * * For licensing information, see the file 'LICENCE' in this directory. * - * $Id: nodelist.h,v 1.131 2005/07/05 21:03:07 dwmw2 Exp $ + * $Id: nodelist.h,v 1.132 2005/07/17 06:56:21 dedekind Exp $ * */ @@ -24,26 +24,10 @@ #ifdef __ECOS #include "os-ecos.h" #else -#include /* For min/max in older kernels */ +#include /* For compatibility with older kernels */ #include "os-linux.h" #endif -#ifndef CONFIG_JFFS2_FS_DEBUG -#define CONFIG_JFFS2_FS_DEBUG 1 -#endif - -#if CONFIG_JFFS2_FS_DEBUG > 0 -#define D1(x) x -#else -#define D1(x) -#endif - -#if CONFIG_JFFS2_FS_DEBUG > 1 -#define D2(x) x -#else -#define D2(x) -#endif - #define JFFS2_NATIVE_ENDIAN /* Note we handle mode bits conversion from JFFS2 (i.e. Linux) to/from @@ -207,79 +191,6 @@ struct jffs2_eraseblock struct jffs2_raw_node_ref *gc_node; /* Next node to be garbage collected */ }; -#define ACCT_SANITY_CHECK(c, jeb) do { \ - struct jffs2_eraseblock *___j = jeb; \ - if ((___j) && ___j->used_size + ___j->dirty_size + ___j->free_size + ___j->wasted_size + ___j->unchecked_size != c->sector_size) { \ - printk(KERN_NOTICE "Eeep. Space accounting for block at 0x%08x is screwed\n", ___j->offset); \ - printk(KERN_NOTICE "free 0x%08x + dirty 0x%08x + used %08x + wasted %08x + unchecked %08x != total %08x\n", \ - ___j->free_size, ___j->dirty_size, ___j->used_size, ___j->wasted_size, ___j->unchecked_size, c->sector_size); \ - BUG(); \ - } \ - if (c->used_size + c->dirty_size + c->free_size + c->erasing_size + c->bad_size + c->wasted_size + c->unchecked_size != c->flash_size) { \ - printk(KERN_NOTICE "Eeep. Space accounting superblock info is screwed\n"); \ - printk(KERN_NOTICE "free 0x%08x + dirty 0x%08x + used %08x + erasing %08x + bad %08x + wasted %08x + unchecked %08x != total %08x\n", \ - c->free_size, c->dirty_size, c->used_size, c->erasing_size, c->bad_size, c->wasted_size, c->unchecked_size, c->flash_size); \ - BUG(); \ - } \ -} while(0) - -static inline void paranoia_failed_dump(struct jffs2_eraseblock *jeb) -{ - struct jffs2_raw_node_ref *ref; - int i=0; - - printk(KERN_NOTICE); - for (ref = jeb->first_node; ref; ref = ref->next_phys) { - printk("%08x->", ref_offset(ref)); - if (++i == 8) { - i = 0; - printk("\n" KERN_NOTICE); - } - } - printk("\n"); -} - - -#define ACCT_PARANOIA_CHECK(jeb) do { \ - uint32_t my_used_size = 0; \ - uint32_t my_unchecked_size = 0; \ - struct jffs2_raw_node_ref *ref2 = jeb->first_node; \ - while (ref2) { \ - if (unlikely(ref2->flash_offset < jeb->offset || \ - ref2->flash_offset > jeb->offset + c->sector_size)) { \ - printk(KERN_NOTICE "Node %08x shouldn't be in block at %08x!\n", \ - ref_offset(ref2), jeb->offset); \ - paranoia_failed_dump(jeb); \ - BUG(); \ - } \ - if (ref_flags(ref2) == REF_UNCHECKED) \ - my_unchecked_size += ref_totlen(c, jeb, ref2); \ - else if (!ref_obsolete(ref2)) \ - my_used_size += ref_totlen(c, jeb, ref2); \ - if (unlikely((!ref2->next_phys) != (ref2 == jeb->last_node))) { \ - if (!ref2->next_phys) \ - printk("ref for node at %p (phys %08x) has next_phys->%p (----), last_node->%p (phys %08x)\n", \ - ref2, ref_offset(ref2), ref2->next_phys, \ - jeb->last_node, ref_offset(jeb->last_node)); \ - else \ - printk("ref for node at %p (phys %08x) has next_phys->%p (%08x), last_node->%p (phys %08x)\n", \ - ref2, ref_offset(ref2), ref2->next_phys, ref_offset(ref2->next_phys), \ - jeb->last_node, ref_offset(jeb->last_node)); \ - paranoia_failed_dump(jeb); \ - BUG(); \ - } \ - ref2 = ref2->next_phys; \ - } \ - if (my_used_size != jeb->used_size) { \ - printk(KERN_NOTICE "Calculated used size %08x != stored used size %08x\n", my_used_size, jeb->used_size); \ - BUG(); \ - } \ - if (my_unchecked_size != jeb->unchecked_size) { \ - printk(KERN_NOTICE "Calculated unchecked size %08x != stored unchecked size %08x\n", my_unchecked_size, jeb->unchecked_size); \ - BUG(); \ - } \ - } while(0) - /* Calculate totlen from surrounding nodes or eraseblock */ static inline uint32_t __ref_totlen(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, @@ -306,11 +217,13 @@ static inline uint32_t ref_totlen(struct jffs2_sb_info *c, { uint32_t ret; - D1(if (jeb && jeb != &c->blocks[ref->flash_offset / c->sector_size]) { +#if CONFIG_JFFS2_FS_DEBUG > 0 + if (jeb && jeb != &c->blocks[ref->flash_offset / c->sector_size]) { printk(KERN_CRIT "ref_totlen called with wrong block -- at 0x%08x instead of 0x%08x; ref 0x%08x\n", jeb->offset, c->blocks[ref->flash_offset / c->sector_size].offset, ref_offset(ref)); BUG(); - }) + } +#endif #if 1 ret = ref->__totlen; @@ -323,14 +236,13 @@ static inline uint32_t ref_totlen(struct jffs2_sb_info *c, ret, ref->__totlen); if (!jeb) jeb = &c->blocks[ref->flash_offset / c->sector_size]; - paranoia_failed_dump(jeb); + jffs2_dbg_dump_node_refs(c, jeb); BUG(); } #endif return ret; } - #define ALLOC_NORMAL 0 /* Normal allocation */ #define ALLOC_DELETION 1 /* Deletion node. Best to allow it */ #define ALLOC_GC 2 /* Space requested for GC. Give it or die */ @@ -384,7 +296,6 @@ static inline struct jffs2_node_frag *frag_last(struct rb_root *root) #define frag_erase(frag, list) rb_erase(&frag->rb, list); /* nodelist.c */ -D2(void jffs2_print_frag_list(struct jffs2_inode_info *f)); void jffs2_add_fd_to_list(struct jffs2_sb_info *c, struct jffs2_full_dirent *new, struct jffs2_full_dirent **list); int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct rb_root *tnp, struct jffs2_full_dirent **fdp, @@ -410,7 +321,6 @@ int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, uint32_t * int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *new); void jffs2_complete_reservation(struct jffs2_sb_info *c); void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *raw); -void jffs2_dump_block_lists(struct jffs2_sb_info *c); /* write.c */ int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t mode, struct jffs2_raw_inode *ri); @@ -483,4 +393,6 @@ int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_erasebloc int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb); #endif +#include "debug.h" + #endif /* __JFFS2_NODELIST_H__ */ -- cgit v1.2.3 From e0c8e42f8f218063ff6838b25038ccef7ddf257e Mon Sep 17 00:00:00 2001 From: "Artem B. Bityutskiy" Date: Sun, 24 Jul 2005 16:14:17 +0100 Subject: [JFFS2] Debug code clean up - step 3 Various simplifiactions. printk format corrections. Convert more code to use the new debug functions. Signed-off-by: Artem B. Bityutskiy Signed-off-by: Thomas Gleixner --- fs/jffs2/nodelist.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/jffs2/nodelist.h') diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index 6802e0968d3..dde9b86e43b 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -7,7 +7,7 @@ * * For licensing information, see the file 'LICENCE' in this directory. * - * $Id: nodelist.h,v 1.132 2005/07/17 06:56:21 dedekind Exp $ + * $Id: nodelist.h,v 1.133 2005/07/22 10:32:08 dedekind Exp $ * */ @@ -236,7 +236,7 @@ static inline uint32_t ref_totlen(struct jffs2_sb_info *c, ret, ref->__totlen); if (!jeb) jeb = &c->blocks[ref->flash_offset / c->sector_size]; - jffs2_dbg_dump_node_refs(c, jeb); + jffs2_dbg_dump_node_refs_nolock(c, jeb); BUG(); } #endif -- cgit v1.2.3 From f302cd028c90ddbca20cb5388458ae0f0dd03d9b Mon Sep 17 00:00:00 2001 From: "Artem B. Bityutskiy" Date: Sun, 24 Jul 2005 16:29:59 +0100 Subject: [JFFS2] Namespace clean up Rename functions to a name matching the functionality. Remove stall debug code Signed-off-by: Artem B. Bityutskiy Signed-off-by: Thomas Gleixner --- fs/jffs2/nodelist.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/jffs2/nodelist.h') diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index dde9b86e43b..0058e395641 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -7,7 +7,7 @@ * * For licensing information, see the file 'LICENCE' in this directory. * - * $Id: nodelist.h,v 1.133 2005/07/22 10:32:08 dedekind Exp $ + * $Id: nodelist.h,v 1.134 2005/07/24 15:29:56 dedekind Exp $ * */ @@ -336,7 +336,7 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint /* readinode.c */ -void jffs2_truncate_fraglist (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size); +void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size); int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn); int jffs2_do_read_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t ino, struct jffs2_raw_inode *latest_node); -- cgit v1.2.3 From f97117d15361b3a6aeaf9e347a287ef3f54b58f9 Mon Sep 17 00:00:00 2001 From: "Artem B. Bityutskiy" Date: Wed, 27 Jul 2005 15:46:14 +0100 Subject: [JFFS2] Move scattered function into related files Move functions to read inodes into readinode.c Move functions to handle fragtree and dentry lists into nodelist.[ch] Signed-off-by: Artem B. Bityutskiy Signed-off-by: Thomas Gleixner --- fs/jffs2/nodelist.h | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) (limited to 'fs/jffs2/nodelist.h') diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index 0058e395641..452fc81f391 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -7,7 +7,7 @@ * * For licensing information, see the file 'LICENCE' in this directory. * - * $Id: nodelist.h,v 1.134 2005/07/24 15:29:56 dedekind Exp $ + * $Id: nodelist.h,v 1.135 2005/07/27 14:46:11 dedekind Exp $ * */ @@ -297,10 +297,6 @@ static inline struct jffs2_node_frag *frag_last(struct rb_root *root) /* nodelist.c */ void jffs2_add_fd_to_list(struct jffs2_sb_info *c, struct jffs2_full_dirent *new, struct jffs2_full_dirent **list); -int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_info *f, - struct rb_root *tnp, struct jffs2_full_dirent **fdp, - uint32_t *highest_version, uint32_t *latest_mctime, - uint32_t *mctime_ver); void jffs2_set_inocache_state(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic, int state); struct jffs2_inode_cache *jffs2_get_ino_cache(struct jffs2_sb_info *c, uint32_t ino); void jffs2_add_ino_cache (struct jffs2_sb_info *c, struct jffs2_inode_cache *new); @@ -309,10 +305,11 @@ void jffs2_free_ino_caches(struct jffs2_sb_info *c); void jffs2_free_raw_node_refs(struct jffs2_sb_info *c); struct jffs2_node_frag *jffs2_lookup_node_frag(struct rb_root *fragtree, uint32_t offset); void jffs2_kill_fragtree(struct rb_root *root, struct jffs2_sb_info *c_delete); -void jffs2_fragtree_insert(struct jffs2_node_frag *newfrag, struct jffs2_node_frag *base); struct rb_node *rb_next(struct rb_node *); struct rb_node *rb_prev(struct rb_node *); void rb_replace_node(struct rb_node *victim, struct rb_node *new, struct rb_root *root); +void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *this); +int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn); /* nodemgmt.c */ int jffs2_thread_should_wake(struct jffs2_sb_info *c); @@ -337,7 +334,6 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint /* readinode.c */ void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size); -int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn); int jffs2_do_read_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t ino, struct jffs2_raw_inode *latest_node); int jffs2_do_crccheck_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic); -- cgit v1.2.3 From 1e900979a7e6c2abbfd1b86bffd226d2d6115f66 Mon Sep 17 00:00:00 2001 From: "Artem B. Bityutskiy" Date: Sun, 31 Jul 2005 09:20:48 +0100 Subject: [JFFS2] Move another fragtree-related function to nodelist.c Signed-off-by: Artem B. Bityutskiy Signed-off-by: Thomas Gleixner --- fs/jffs2/nodelist.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/jffs2/nodelist.h') diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index 452fc81f391..53c12e4a337 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -7,7 +7,7 @@ * * For licensing information, see the file 'LICENCE' in this directory. * - * $Id: nodelist.h,v 1.135 2005/07/27 14:46:11 dedekind Exp $ + * $Id: nodelist.h,v 1.136 2005/07/31 08:20:44 dedekind Exp $ * */ @@ -310,6 +310,7 @@ struct rb_node *rb_prev(struct rb_node *); void rb_replace_node(struct rb_node *victim, struct rb_node *new, struct rb_root *root); void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *this); int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn); +void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size); /* nodemgmt.c */ int jffs2_thread_should_wake(struct jffs2_sb_info *c); @@ -333,7 +334,6 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint /* readinode.c */ -void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size); int jffs2_do_read_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t ino, struct jffs2_raw_inode *latest_node); int jffs2_do_crccheck_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic); -- cgit v1.2.3 From 1e0da3cb6cd4a909c64c870344183185bd6815b1 Mon Sep 17 00:00:00 2001 From: "Artem B. Bityutskiy" Date: Mon, 1 Aug 2005 13:05:22 +0100 Subject: [JFFS2] Build fragtree in reverse order Instead of building fragtree starting from node with the smallest version number, start from the highest. This helps to avoid reading and checking obsolete nodes. Signed-off-by: Artem B. Bityutskiy Signed-off-by: Thomas Gleixner --- fs/jffs2/nodelist.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'fs/jffs2/nodelist.h') diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index 53c12e4a337..adee3c6eb44 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -7,7 +7,7 @@ * * For licensing information, see the file 'LICENCE' in this directory. * - * $Id: nodelist.h,v 1.136 2005/07/31 08:20:44 dedekind Exp $ + * $Id: nodelist.h,v 1.137 2005/08/01 12:05:19 dedekind Exp $ * */ @@ -61,6 +61,9 @@ #error wibble #endif +/* The minimal node header size */ +#define JFFS2_MIN_NODE_HEADER sizeof(struct jffs2_raw_dirent) + /* This is all we need to keep in-core for each raw node during normal operation. As and when we do read_inode on a particular inode, we can @@ -148,6 +151,9 @@ struct jffs2_tmp_dnode_info struct rb_node rb; struct jffs2_full_dnode *fn; uint32_t version; + uint32_t data_crc; + uint32_t partial_crc; + uint32_t csize; }; struct jffs2_full_dirent @@ -311,6 +317,7 @@ void rb_replace_node(struct rb_node *victim, struct rb_node *new, struct rb_root void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *this); int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn); void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size); +int jffs2_add_older_frag_to_fragtree(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_tmp_dnode_info *tn); /* nodemgmt.c */ int jffs2_thread_should_wake(struct jffs2_sb_info *c); -- cgit v1.2.3 From 3a69e0cd22cf34920508a4032d53e41251925f53 Mon Sep 17 00:00:00 2001 From: "Artem B. Bityutskiy" Date: Wed, 17 Aug 2005 14:46:26 +0100 Subject: [JFFS2] Fix JFFS2 [mc]time handling From: David Woodhouse Signed-off-by: Artem B. Bityutskiy Signed-off-by: Thomas Gleixner --- fs/jffs2/nodelist.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'fs/jffs2/nodelist.h') diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index adee3c6eb44..ce47d5530a7 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -7,7 +7,7 @@ * * For licensing information, see the file 'LICENCE' in this directory. * - * $Id: nodelist.h,v 1.137 2005/08/01 12:05:19 dedekind Exp $ + * $Id: nodelist.h,v 1.138 2005/08/17 13:46:23 dedekind Exp $ * */ @@ -336,8 +336,8 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, unsigned char *buf, uint32_t offset, uint32_t writelen, uint32_t *retlen); int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const char *name, int namelen); -int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name, int namelen, struct jffs2_inode_info *dead_f); -int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen); +int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name, int namelen, struct jffs2_inode_info *dead_f, uint32_t time); +int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen, uint32_t time); /* readinode.c */ -- cgit v1.2.3 From 4ce1f562189696605a84813cf71847c0cc698414 Mon Sep 17 00:00:00 2001 From: Ferenc Havasi Date: Wed, 31 Aug 2005 14:51:04 +0100 Subject: [JFFS2] Remove support for virtual blocks Remove support for virtual blocks, which are build by concatenation of multiple physical erase blocks. For more information please read the MTD mailing list thread "[PATCH] remove support for virtual blocks" Signed-off-by: Ferenc Havasi Signed-off-by: Thomas Gleixner --- fs/jffs2/nodelist.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'fs/jffs2/nodelist.h') diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index ce47d5530a7..1533af8b395 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -7,7 +7,7 @@ * * For licensing information, see the file 'LICENCE' in this directory. * - * $Id: nodelist.h,v 1.138 2005/08/17 13:46:23 dedekind Exp $ + * $Id: nodelist.h,v 1.139 2005/08/31 13:51:00 havasi Exp $ * */ @@ -197,6 +197,11 @@ struct jffs2_eraseblock struct jffs2_raw_node_ref *gc_node; /* Next node to be garbage collected */ }; +static inline int jffs2_blocks_use_vmalloc(struct jffs2_sb_info *c) +{ + return ((c->flash_size / c->sector_size) * sizeof (struct jffs2_eraseblock)) > (128 * 1024); +} + /* Calculate totlen from surrounding nodes or eraseblock */ static inline uint32_t __ref_totlen(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, -- cgit v1.2.3 From e631ddba588783edd521c5a89f7b2902772fb691 Mon Sep 17 00:00:00 2001 From: Ferenc Havasi Date: Wed, 7 Sep 2005 09:35:26 +0100 Subject: [JFFS2] Add erase block summary support (mount time improvement) The goal of summary is to speed up the mount time. Erase block summary (EBS) stores summary information at the end of every (closed) erase block. It is no longer necessary to scan all nodes separetly (and read all pages of them) just read this "small" summary, where every information is stored which is needed at mount time. This summary information is stored in a JFFS2_FEATURE_RWCOMPAT_DELETE. During the mount process if there is no summary info the orignal scan process will be executed. EBS works with NAND and NOR flashes, too. There is a user space tool called sumtool to generate this summary information for a JFFS2 image. Signed-off-by: Ferenc Havasi Signed-off-by: Thomas Gleixner --- fs/jffs2/nodelist.h | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'fs/jffs2/nodelist.h') diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index 1533af8b395..1222372cb29 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -7,7 +7,7 @@ * * For licensing information, see the file 'LICENCE' in this directory. * - * $Id: nodelist.h,v 1.139 2005/08/31 13:51:00 havasi Exp $ + * $Id: nodelist.h,v 1.140 2005/09/07 08:34:54 havasi Exp $ * */ @@ -20,6 +20,7 @@ #include #include #include +#include "summary.h" #ifdef __ECOS #include "os-ecos.h" @@ -326,8 +327,10 @@ int jffs2_add_older_frag_to_fragtree(struct jffs2_sb_info *c, struct jffs2_inode /* nodemgmt.c */ int jffs2_thread_should_wake(struct jffs2_sb_info *c); -int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs, uint32_t *len, int prio); -int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs, uint32_t *len); +int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs, + uint32_t *len, int prio, uint32_t sumsize); +int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs, + uint32_t *len, uint32_t sumsize); int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *new); void jffs2_complete_reservation(struct jffs2_sb_info *c); void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *raw); @@ -386,6 +389,10 @@ char *jffs2_getlink(struct jffs2_sb_info *c, struct jffs2_inode_info *f); /* scan.c */ int jffs2_scan_medium(struct jffs2_sb_info *c); void jffs2_rotate_lists(struct jffs2_sb_info *c); +int jffs2_fill_scan_buf(struct jffs2_sb_info *c, void *buf, + uint32_t ofs, uint32_t len); +struct jffs2_inode_cache *jffs2_scan_make_ino_cache(struct jffs2_sb_info *c, uint32_t ino); +int jffs2_scan_classify_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb); /* build.c */ int jffs2_do_mount_fs(struct jffs2_sb_info *c); -- cgit v1.2.3 From 182ec4eee397543101a6db8906ed88727d3f7e53 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Nov 2005 11:16:07 +0000 Subject: [JFFS2] Clean up trailing white spaces Signed-off-by: Thomas Gleixner --- fs/jffs2/nodelist.h | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) (limited to 'fs/jffs2/nodelist.h') diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index 1222372cb29..23a67bb3052 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -58,7 +58,7 @@ #define je16_to_cpu(x) (le16_to_cpu(x.v16)) #define je32_to_cpu(x) (le32_to_cpu(x.v32)) #define jemode_to_cpu(x) (le32_to_cpu(jffs2_to_os_mode((x).m))) -#else +#else #error wibble #endif @@ -68,7 +68,7 @@ /* This is all we need to keep in-core for each raw node during normal operation. As and when we do read_inode on a particular inode, we can - scan the nodes which are listed for it and build up a proper map of + scan the nodes which are listed for it and build up a proper map of which nodes are currently valid. JFFSv1 always used to keep that whole map in core for each inode. */ @@ -85,7 +85,7 @@ struct jffs2_raw_node_ref /* flash_offset & 3 always has to be zero, because nodes are always aligned at 4 bytes. So we have a couple of extra bits - to play with, which indicate the node's status; see below: */ + to play with, which indicate the node's status; see below: */ #define REF_UNCHECKED 0 /* We haven't yet checked the CRC or built its inode */ #define REF_OBSOLETE 1 /* Obsolete, can be completely ignored */ #define REF_PRISTINE 2 /* Completely clean. GC without looking */ @@ -98,7 +98,7 @@ struct jffs2_raw_node_ref /* For each inode in the filesystem, we need to keep a record of nlink, because it would be a PITA to scan the whole directory tree at read_inode() time to calculate it, and to keep sufficient information - in the raw_node_ref (basically both parent and child inode number for + in the raw_node_ref (basically both parent and child inode number for dirent nodes) would take more space than this does. We also keep a pointer to the first physical node which is part of this inode, too. */ @@ -128,7 +128,7 @@ struct jffs2_inode_cache { #define INOCACHE_HASHSIZE 128 /* - Larger representation of a raw node, kept in-core only when the + Larger representation of a raw node, kept in-core only when the struct inode for this particular ino is instantiated. */ @@ -138,11 +138,11 @@ struct jffs2_full_dnode uint32_t ofs; /* The offset to which the data of this node belongs */ uint32_t size; uint32_t frags; /* Number of fragments which currently refer - to this node. When this reaches zero, + to this node. When this reaches zero, the node is obsolete. */ }; -/* +/* Even larger representation of a raw node, kept in-core only while we're actually building up the original map of which nodes go where, in read_inode() @@ -155,7 +155,7 @@ struct jffs2_tmp_dnode_info uint32_t data_crc; uint32_t partial_crc; uint32_t csize; -}; +}; struct jffs2_full_dirent { @@ -169,7 +169,7 @@ struct jffs2_full_dirent }; /* - Fragments - used to build a map of which raw node to obtain + Fragments - used to build a map of which raw node to obtain data from for each part of the ino */ struct jffs2_node_frag @@ -209,7 +209,7 @@ static inline uint32_t __ref_totlen(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref) { uint32_t ref_end; - + if (ref->next_phys) ref_end = ref_offset(ref->next_phys); else { @@ -264,7 +264,7 @@ static inline uint32_t ref_totlen(struct jffs2_sb_info *c, #define VERYDIRTY(c, size) ((size) >= ((c)->sector_size / 2)) /* check if dirty space is more than 255 Byte */ -#define ISDIRTY(size) ((size) > sizeof (struct jffs2_raw_inode) + JFFS2_MIN_DATA_LEN) +#define ISDIRTY(size) ((size) > sizeof (struct jffs2_raw_inode) + JFFS2_MIN_DATA_LEN) #define PAD(x) (((x)+3)&~3) @@ -341,7 +341,7 @@ int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const unsigned char *data, uint32_t datalen, uint32_t flash_ofs, int alloc_mode); struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_dirent *rd, const unsigned char *name, uint32_t namelen, uint32_t flash_ofs, int alloc_mode); int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f, - struct jffs2_raw_inode *ri, unsigned char *buf, + struct jffs2_raw_inode *ri, unsigned char *buf, uint32_t offset, uint32_t writelen, uint32_t *retlen); int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const char *name, int namelen); int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name, int namelen, struct jffs2_inode_info *dead_f, uint32_t time); @@ -349,7 +349,7 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint /* readinode.c */ -int jffs2_do_read_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, +int jffs2_do_read_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t ino, struct jffs2_raw_inode *latest_node); int jffs2_do_crccheck_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic); void jffs2_do_clear_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f); -- cgit v1.2.3