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| author | Boaz Harrosh <bharrosh@panasas.com> | 2011-09-28 13:18:45 +0300 |
|---|---|---|
| committer | Boaz Harrosh <bharrosh@panasas.com> | 2011-10-14 18:54:41 +0200 |
| commit | 5a51c0c7e9a913649aa65d8233470682bcbb7694 (patch) | |
| tree | 4ed43b3a2f9fade227e098771a5bed66f6a71dc4 /fs/exofs/inode.c | |
| parent | 3bd9856857339d7ee8c4ad50030583f1b9415c39 (diff) | |
| download | linux-5a51c0c7e9a913649aa65d8233470682bcbb7694.tar.gz linux-5a51c0c7e9a913649aa65d8233470682bcbb7694.tar.bz2 linux-5a51c0c7e9a913649aa65d8233470682bcbb7694.zip | |
ore/exofs: Define new ore_verify_layout
All users of the ore will need to check if current code
supports the given layout. For example RAID5/6 is not
currently supported.
So move all the checks from exofs/super.c to a new
ore_verify_layout() to be used by ore users.
Note that any new layout should be passed through the
ore_verify_layout() because the ore engine will prepare
and verify some internal members of ore_layout, and
assumes it's called.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Diffstat (limited to 'fs/exofs/inode.c')
| -rw-r--r-- | fs/exofs/inode.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c index 96366a1d7eae..5a62420cbdb1 100644 --- a/fs/exofs/inode.c +++ b/fs/exofs/inode.c @@ -37,11 +37,7 @@ #define EXOFS_DBGMSG2(M...) do {} while (0) -enum { BIO_MAX_PAGES_KMALLOC = - (PAGE_SIZE - sizeof(struct bio)) / sizeof(struct bio_vec), - MAX_PAGES_KMALLOC = - PAGE_SIZE / sizeof(struct page *), -}; +enum {MAX_PAGES_KMALLOC = PAGE_SIZE / sizeof(struct page *), }; unsigned exofs_max_io_pages(struct ore_layout *layout, unsigned expected_pages) @@ -49,8 +45,7 @@ unsigned exofs_max_io_pages(struct ore_layout *layout, unsigned pages = min_t(unsigned, expected_pages, MAX_PAGES_KMALLOC); /* TODO: easily support bio chaining */ - pages = min_t(unsigned, pages, - layout->group_width * BIO_MAX_PAGES_KMALLOC); + pages = min_t(unsigned, pages, layout->max_io_length / PAGE_SIZE); return pages; } |