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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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22
core/cfs/cfs-coffee.c
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@ -252,15 +252,12 @@ load_file(const char *name, struct file_header *hdr, coffee_page_t first_page)
unreferenced = i; unreferenced = i;
} }
} }
i = -1;
if(free != -1) { if(free != -1) {
i = free; i = free;
} else if(unreferenced != -1) { } else if(unreferenced != -1) {
i = unreferenced; i = unreferenced;
} } else {
if(i == -1) {
return NULL; return NULL;
} }
@ -285,6 +282,7 @@ find_file(const char *name)
if(coffee_files[i].max_pages == 0) { if(coffee_files[i].max_pages == 0) {
continue; continue;
} }
read_header(&hdr, coffee_files[i].first_page); read_header(&hdr, coffee_files[i].first_page);
if(HDR_ACTIVE(hdr) && strcmp(name, hdr.name) == 0) { if(HDR_ACTIVE(hdr) && strcmp(name, hdr.name) == 0) {
return &coffee_files[i]; return &coffee_files[i];
@ -393,7 +391,7 @@ file_end(coffee_page_t first_page)
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static coffee_page_t static coffee_page_t
find_contiguous_pages(coffee_page_t wanted) find_contiguous_pages(coffee_page_t amount)
{ {
coffee_page_t page, start; coffee_page_t page, start;
struct file_header hdr; struct file_header hdr;
@ -404,14 +402,13 @@ find_contiguous_pages(coffee_page_t wanted)
if(HDR_FREE(hdr)) { if(HDR_FREE(hdr)) {
if(start == -1) { if(start == -1) {
start = page; start = page;
} else { } else if(start + amount <= page) {
if(start + wanted <= page) {
return start; return start;
} }
}
/* Jump to the next sector. */ /* Jump to the next sector. */
page = (page + COFFEE_PAGES_PER_SECTOR) & ~(COFFEE_PAGES_PER_SECTOR - 1); page = (page + COFFEE_PAGES_PER_SECTOR) & ~(COFFEE_PAGES_PER_SECTOR - 1);
} else if(HDR_ISOLATED(hdr)) { } else if(HDR_ISOLATED(hdr)) {
start = -1;
++page; ++page;
} else { } else {
start = -1; start = -1;
@ -479,6 +476,7 @@ remove_by_page(coffee_page_t page, int remove_log, int close_fds)
if(last_valid >= 0) { if(last_valid >= 0) {
coffee_fd_set[last_valid].file->first_page = INVALID_PAGE; 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; 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", PRINTF("Coffee: Reserved %u pages starting from %u for file %s\n",
pages, page, name); pages, page, name);
file = load_file(name, &hdr, page); file = load_file(name, &hdr, page);
file->end = 0; file->end = 0;
@ -741,9 +740,12 @@ merge_log(coffee_page_t file_page, int extend)
cfs_close(fd); cfs_close(fd);
for(i = 0; i < COFFEE_FD_SET_SIZE; i++) { for(i = 0; i < COFFEE_FD_SET_SIZE; i++) {
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; coffee_fd_set[i].file = new_file;
new_file->references++;
}
} }
return 0; return 0;
} }
@ -1041,6 +1043,7 @@ cfs_write(int fd, const void *buf, unsigned size)
if(merge_log(file->first_page, 1) < 0) { if(merge_log(file->first_page, 1) < 0) {
return -1; return -1;
} }
file = fdp->file;
PRINTF("Extended the file at page %u\n", (unsigned)file->first_page); 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); i = write_log_page(file, &lp);
if(i == 0) { if(i == 0) {
file = fdp->file;
/* The file was merged with the log. Try again. */ /* The file was merged with the log. Try again. */
continue; continue;
} }