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made gc on removal configurable since it decreases wear levelling.

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cleaned up some code.
This commit is contained in:
nvt-se 2009-04-02 14:20:04 +00:00
parent 1425537a13
commit 4507891ed5
1 changed files with 7 additions and 2 deletions
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9
core/cfs/cfs-coffee.c
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@ -271,7 +271,8 @@ collect_garbage(int mode)
watchdog_stop(); watchdog_stop();
PRINTF("Coffee: Running the file system garbage collector...\n"); PRINTF("Coffee: Running the file system garbage collector in %s mode\n",
mode == GC_RELUCTANT ? "reluctant" : "greedy");
/* /*
* The garbage collector erases as many sectors as possible. A sector is * The garbage collector erases as many sectors as possible. A sector is
* erasable if there are only free or obsolete pages in it. * erasable if there are only free or obsolete pages in it.
@ -474,7 +475,8 @@ find_contiguous_pages(coffee_page_t amount)
start = page; start = page;
} }
/* All remaining pages in this sector are free -- jump to the next sector. */ /* All remaining pages in this sector are free --
jump to the next sector. */
page = next_file(page, &hdr); page = next_file(page, &hdr);
if(start + amount <= page) { if(start + amount <= page) {
@ -527,9 +529,11 @@ remove_by_page(coffee_page_t page, int remove_log, int close_fds)
} }
} }
#if !COFFEE_CONF_EXTENDED_WEAR_LEVELLING
if(!HDR_LOG(hdr)) { if(!HDR_LOG(hdr)) {
collect_garbage(GC_RELUCTANT); collect_garbage(GC_RELUCTANT);
} }
#endif
return 0; return 0;
} }
@ -973,6 +977,7 @@ cfs_close(int fd)
#endif #endif
coffee_fd_set[fd].flags = COFFEE_FD_FREE; coffee_fd_set[fd].flags = COFFEE_FD_FREE;
coffee_fd_set[fd].file->references--; coffee_fd_set[fd].file->references--;
coffee_fd_set[fd].file = NULL;
} }
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/