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fixed merge_log bug and space allocation error with isolated pages.

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This commit is contained in:
nvt-se 2009-02-12 11:24:22 +00:00
parent 13a3029435
commit b8f3dca765
1 changed files with 17 additions and 13 deletions
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30
core/cfs/cfs-coffee.c
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@ -161,7 +161,7 @@ absolute_offset(coffee_page_t page, coffee_offset_t offset)
/*---------------------------------------------------------------------------*/
static void
get_sector_status(uint16_t sector, coffee_page_t *active,
coffee_page_t *free, coffee_page_t *obsolete) {
coffee_page_t *free, coffee_page_t *obsolete) {
static coffee_page_t skip_pages;
static int last_pages_are_active;
coffee_offset_t offset, sector_start;
@ -201,7 +201,7 @@ get_sector_status(uint16_t sector, coffee_page_t *active,
offset += COFFEE_PAGE_SIZE;
}
PRINTF("Coffee: Isolated %u pages starting in sector %d\n",
(unsigned)skip_pages, (int)sector);
(unsigned)skip_pages, (int)sector);
}
offset = sector_start + (skip_pages * COFFEE_PAGE_SIZE);
@ -252,15 +252,12 @@ load_file(const char *name, struct file_header *hdr, coffee_page_t first_page)
unreferenced = i;
}
}
i = -1;
if(free != -1) {
i = free;
} else if(unreferenced != -1) {
i = unreferenced;
}
if(i == -1) {
} else {
return NULL;
}
@ -285,6 +282,7 @@ find_file(const char *name)
if(coffee_files[i].max_pages == 0) {
continue;
}
read_header(&hdr, coffee_files[i].first_page);
if(HDR_ACTIVE(hdr) && strcmp(name, hdr.name) == 0) {
return &coffee_files[i];
@ -393,7 +391,7 @@ file_end(coffee_page_t first_page)
}
/*---------------------------------------------------------------------------*/
static coffee_page_t
find_contiguous_pages(coffee_page_t wanted)
find_contiguous_pages(coffee_page_t amount)
{
coffee_page_t page, start;
struct file_header hdr;
@ -404,14 +402,13 @@ find_contiguous_pages(coffee_page_t wanted)
if(HDR_FREE(hdr)) {
if(start == -1) {
start = page;
} else {
if(start + wanted <= page) {
return start;
}
} else if(start + amount <= page) {
return start;
}
/* Jump to the next sector. */
page = (page + COFFEE_PAGES_PER_SECTOR) & ~(COFFEE_PAGES_PER_SECTOR - 1);
} else if(HDR_ISOLATED(hdr)) {
start = -1;
++page;
} else {
start = -1;
@ -479,6 +476,7 @@ remove_by_page(coffee_page_t page, int remove_log, int close_fds)
if(last_valid >= 0) {
coffee_fd_set[last_valid].file->first_page = INVALID_PAGE;
coffee_fd_set[last_valid].file->max_pages = 0;
coffee_fd_set[last_valid].file->references = 0;
}
}
@ -525,6 +523,7 @@ reserve(const char *name, coffee_page_t pages, int allow_duplicates)
PRINTF("Coffee: Reserved %u pages starting from %u for file %s\n",
pages, page, name);
file = load_file(name, &hdr, page);
file->end = 0;
@ -741,10 +740,13 @@ merge_log(coffee_page_t file_page, int extend)
cfs_close(fd);
for(i = 0; i < COFFEE_FD_SET_SIZE; i++) {
coffee_fd_set[i].file = new_file;
if(coffee_fd_set[i].flags != COFFEE_FD_FREE &&
coffee_fd_set[i].file->first_page == file_page) {
coffee_fd_set[i].file = new_file;
new_file->references++;
}
}
return 0;
}
/*---------------------------------------------------------------------------*/
@ -1041,6 +1043,7 @@ cfs_write(int fd, const void *buf, unsigned size)
if(merge_log(file->first_page, 1) < 0) {
return -1;
}
file = fdp->file;
PRINTF("Extended the file at page %u\n", (unsigned)file->first_page);
}
@ -1053,6 +1056,7 @@ cfs_write(int fd, const void *buf, unsigned size)
i = write_log_page(file, &lp);
if(i == 0) {
file = fdp->file;
/* The file was merged with the log. Try again. */
continue;
}