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Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6

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* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6: (62 commits)
  [XFS] add __init/__exit mark to specific init/cleanup functions
  [XFS] Fix oops in xfs_file_readdir()
  [XFS] kill xfs_root
  [XFS] keep i_nlink updated and use proper accessors
  [XFS] stop updating inode->i_blocks
  [XFS] Make xfs_ail_check check less by default
  [XFS] Move AIL pushing into it's own thread
  [XFS] use generic_permission
  [XFS] stop re-checking permissions in xfs_swapext
  [XFS] clean up xfs_swapext
  [XFS] remove permission check from xfs_change_file_space
  [XFS] prevent panic during log recovery due to bogus op_hdr length
  [XFS] Cleanup various fid related bits:
  [XFS] Fix xfs_lowbit64
  [XFS] Remove CFORK macros and use code directly in IFORK and DFORK macros.
  [XFS] kill superflous buffer locking (2nd attempt)
  [XFS] Use kernel-supplied "roundup_pow_of_two" for simplicity
  [XFS] Remove the BPCSHIFT and NB* based macros from XFS.
  [XFS] Remove bogus assert
  [XFS] optimize XFS_IS_REALTIME_INODE w/o realtime config
  ...
This commit is contained in:
Linus Torvalds
2008-02-07 19:12:12 -08:00
parent a13ff0bb3f de2eeea609
commit 0b61a2ba5d
85 changed files with 2298 additions and 3179 deletions
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57
fs/xfs/linux-2.6/xfs_buf.c
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@ -387,8 +387,6 @@ _xfs_buf_lookup_pages(
if (unlikely(page == NULL)) {
if (flags & XBF_READ_AHEAD) {
bp->b_page_count = i;
for (i = 0; i < bp->b_page_count; i++)
unlock_page(bp->b_pages[i]);
return -ENOMEM;
}
@ -418,24 +416,17 @@ _xfs_buf_lookup_pages(
ASSERT(!PagePrivate(page));
if (!PageUptodate(page)) {
page_count--;
if (blocksize >= PAGE_CACHE_SIZE) {
if (flags & XBF_READ)
bp->b_locked = 1;
} else if (!PagePrivate(page)) {
if (blocksize < PAGE_CACHE_SIZE && !PagePrivate(page)) {
if (test_page_region(page, offset, nbytes))
page_count++;
}
}
unlock_page(page);
bp->b_pages[i] = page;
offset = 0;
}
if (!bp->b_locked) {
for (i = 0; i < bp->b_page_count; i++)
unlock_page(bp->b_pages[i]);
}
if (page_count == bp->b_page_count)
bp->b_flags |= XBF_DONE;
@ -751,7 +742,6 @@ xfs_buf_associate_memory(
bp->b_pages[i] = mem_to_page((void *)pageaddr);
pageaddr += PAGE_CACHE_SIZE;
}
bp->b_locked = 0;
bp->b_count_desired = len;
bp->b_buffer_length = buflen;
@ -1098,25 +1088,13 @@ xfs_buf_iostart(
return status;
}
STATIC_INLINE int
_xfs_buf_iolocked(
xfs_buf_t *bp)
{
ASSERT(bp->b_flags & (XBF_READ | XBF_WRITE));
if (bp->b_flags & XBF_READ)
return bp->b_locked;
return 0;
}
STATIC_INLINE void
_xfs_buf_ioend(
xfs_buf_t *bp,
int schedule)
{
if (atomic_dec_and_test(&bp->b_io_remaining) == 1) {
bp->b_locked = 0;
if (atomic_dec_and_test(&bp->b_io_remaining) == 1)
xfs_buf_ioend(bp, schedule);
}
}
STATIC void
@ -1147,10 +1125,6 @@ xfs_buf_bio_end_io(
if (--bvec >= bio->bi_io_vec)
prefetchw(&bvec->bv_page->flags);
if (_xfs_buf_iolocked(bp)) {
unlock_page(page);
}
} while (bvec >= bio->bi_io_vec);
_xfs_buf_ioend(bp, 1);
@ -1161,13 +1135,12 @@ STATIC void
_xfs_buf_ioapply(
xfs_buf_t *bp)
{
int i, rw, map_i, total_nr_pages, nr_pages;
int rw, map_i, total_nr_pages, nr_pages;
struct bio *bio;
int offset = bp->b_offset;
int size = bp->b_count_desired;
sector_t sector = bp->b_bn;
unsigned int blocksize = bp->b_target->bt_bsize;
int locking = _xfs_buf_iolocked(bp);
total_nr_pages = bp->b_page_count;
map_i = 0;
@ -1190,7 +1163,7 @@ _xfs_buf_ioapply(
* filesystem block size is not smaller than the page size.
*/
if ((bp->b_buffer_length < PAGE_CACHE_SIZE) &&
(bp->b_flags & XBF_READ) && locking &&
(bp->b_flags & XBF_READ) &&
(blocksize >= PAGE_CACHE_SIZE)) {
bio = bio_alloc(GFP_NOIO, 1);
@ -1207,24 +1180,6 @@ _xfs_buf_ioapply(
goto submit_io;
}
/* Lock down the pages which we need to for the request */
if (locking && (bp->b_flags & XBF_WRITE) && (bp->b_locked == 0)) {
for (i = 0; size; i++) {
int nbytes = PAGE_CACHE_SIZE - offset;
struct page *page = bp->b_pages[i];
if (nbytes > size)
nbytes = size;
lock_page(page);
size -= nbytes;
offset = 0;
}
offset = bp->b_offset;
size = bp->b_count_desired;
}
next_chunk:
atomic_inc(&bp->b_io_remaining);
nr_pages = BIO_MAX_SECTORS >> (PAGE_SHIFT - BBSHIFT);
@ -1571,7 +1526,7 @@ xfs_alloc_delwrite_queue(
INIT_LIST_HEAD(&btp->bt_list);
INIT_LIST_HEAD(&btp->bt_delwrite_queue);
spinlock_init(&btp->bt_delwrite_lock, "delwri_lock");
spin_lock_init(&btp->bt_delwrite_lock);
btp->bt_flags = 0;
btp->bt_task = kthread_run(xfsbufd, btp, "xfsbufd");
if (IS_ERR(btp->bt_task)) {