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authorBrian Behlendorf <behlendorf1@llnl.gov>2016-04-05 12:39:37 -0700
committerNed Bass <bass6@llnl.gov>2016-05-01 18:24:30 -0400
commitd746e2ea0e7a564888f078fc96a280ff85d0e6dd (patch)
tree378b2839e1ae4e4087718f0341ac843ecc7300a3 /module/zfs
parent60a4ea3f948f1596b92b666fc7dd21202544edbb (diff)
Linux 4.6 compat: PAGE_CACHE_SIZE removal
As described in torvalds/linux@4a2d057e the macros PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were originally introduced to make it possible to add bigger chunks to the page cache. This never panned out and it has therefore been removed from the kernel. ZFS has been updated to use the PAGE_{SIZE,SHIFT,MASK,ALIGN} macros and calls to page_cache_release() have been replaced with put_page(). There was no need to introduce a configure check for this because these interfaces have existed for a very long time. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chunwei Chen <tuxoko@gmail.com> Closes #4489
Diffstat (limited to 'module/zfs')
-rw-r--r--module/zfs/zfs_vnops.c28
-rw-r--r--module/zfs/zfs_znode.c19
2 files changed, 23 insertions, 24 deletions
diff --git a/module/zfs/zfs_vnops.c b/module/zfs/zfs_vnops.c
index 944f0ad3d..43c3a3c20 100644
--- a/module/zfs/zfs_vnops.c
+++ b/module/zfs/zfs_vnops.c
@@ -332,11 +332,11 @@ update_pages(struct inode *ip, int64_t start, int len,
int64_t off;
void *pb;
- off = start & (PAGE_CACHE_SIZE-1);
- for (start &= PAGE_CACHE_MASK; len > 0; start += PAGE_CACHE_SIZE) {
- nbytes = MIN(PAGE_CACHE_SIZE - off, len);
+ off = start & (PAGE_SIZE-1);
+ for (start &= PAGE_MASK; len > 0; start += PAGE_SIZE) {
+ nbytes = MIN(PAGE_SIZE - off, len);
- pp = find_lock_page(mp, start >> PAGE_CACHE_SHIFT);
+ pp = find_lock_page(mp, start >> PAGE_SHIFT);
if (pp) {
if (mapping_writably_mapped(mp))
flush_dcache_page(pp);
@@ -353,7 +353,7 @@ update_pages(struct inode *ip, int64_t start, int len,
SetPageUptodate(pp);
ClearPageError(pp);
unlock_page(pp);
- page_cache_release(pp);
+ put_page(pp);
}
len -= nbytes;
@@ -384,11 +384,11 @@ mappedread(struct inode *ip, int nbytes, uio_t *uio)
void *pb;
start = uio->uio_loffset;
- off = start & (PAGE_CACHE_SIZE-1);
- for (start &= PAGE_CACHE_MASK; len > 0; start += PAGE_CACHE_SIZE) {
- bytes = MIN(PAGE_CACHE_SIZE - off, len);
+ off = start & (PAGE_SIZE-1);
+ for (start &= PAGE_MASK; len > 0; start += PAGE_SIZE) {
+ bytes = MIN(PAGE_SIZE - off, len);
- pp = find_lock_page(mp, start >> PAGE_CACHE_SHIFT);
+ pp = find_lock_page(mp, start >> PAGE_SHIFT);
if (pp) {
ASSERT(PageUptodate(pp));
@@ -401,7 +401,7 @@ mappedread(struct inode *ip, int nbytes, uio_t *uio)
mark_page_accessed(pp);
unlock_page(pp);
- page_cache_release(pp);
+ put_page(pp);
} else {
error = dmu_read_uio_dbuf(sa_get_db(zp->z_sa_hdl),
uio, bytes);
@@ -3894,8 +3894,8 @@ zfs_putpage(struct inode *ip, struct page *pp, struct writeback_control *wbc)
pgoff = page_offset(pp); /* Page byte-offset in file */
offset = i_size_read(ip); /* File length in bytes */
- pglen = MIN(PAGE_CACHE_SIZE, /* Page length in bytes */
- P2ROUNDUP(offset, PAGE_CACHE_SIZE)-pgoff);
+ pglen = MIN(PAGE_SIZE, /* Page length in bytes */
+ P2ROUNDUP(offset, PAGE_SIZE)-pgoff);
/* Page is beyond end of file */
if (pgoff >= offset) {
@@ -4006,7 +4006,7 @@ zfs_putpage(struct inode *ip, struct page *pp, struct writeback_control *wbc)
}
va = kmap(pp);
- ASSERT3U(pglen, <=, PAGE_CACHE_SIZE);
+ ASSERT3U(pglen, <=, PAGE_SIZE);
dmu_write(zsb->z_os, zp->z_id, pgoff, pglen, va, tx);
kunmap(pp);
@@ -4181,7 +4181,7 @@ zfs_fillpage(struct inode *ip, struct page *pl[], int nr_pages)
int err;
os = zsb->z_os;
- io_len = nr_pages << PAGE_CACHE_SHIFT;
+ io_len = nr_pages << PAGE_SHIFT;
i_size = i_size_read(ip);
io_off = page_offset(pl[0]);
diff --git a/module/zfs/zfs_znode.c b/module/zfs/zfs_znode.c
index 860354b11..1742a51ee 100644
--- a/module/zfs/zfs_znode.c
+++ b/module/zfs/zfs_znode.c
@@ -1510,13 +1510,12 @@ zfs_zero_partial_page(znode_t *zp, uint64_t start, uint64_t len)
int64_t off;
void *pb;
- ASSERT((start & PAGE_CACHE_MASK) ==
- ((start + len - 1) & PAGE_CACHE_MASK));
+ ASSERT((start & PAGE_MASK) == ((start + len - 1) & PAGE_MASK));
- off = start & (PAGE_CACHE_SIZE - 1);
- start &= PAGE_CACHE_MASK;
+ off = start & (PAGE_SIZE - 1);
+ start &= PAGE_MASK;
- pp = find_lock_page(mp, start >> PAGE_CACHE_SHIFT);
+ pp = find_lock_page(mp, start >> PAGE_SHIFT);
if (pp) {
if (mapping_writably_mapped(mp))
flush_dcache_page(pp);
@@ -1532,7 +1531,7 @@ zfs_zero_partial_page(znode_t *zp, uint64_t start, uint64_t len)
SetPageUptodate(pp);
ClearPageError(pp);
unlock_page(pp);
- page_cache_release(pp);
+ put_page(pp);
}
}
@@ -1579,14 +1578,14 @@ zfs_free_range(znode_t *zp, uint64_t off, uint64_t len)
loff_t first_page_offset, last_page_offset;
/* first possible full page in hole */
- first_page = (off + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
+ first_page = (off + PAGE_SIZE - 1) >> PAGE_SHIFT;
/* last page of hole */
- last_page = (off + len) >> PAGE_CACHE_SHIFT;
+ last_page = (off + len) >> PAGE_SHIFT;
/* offset of first_page */
- first_page_offset = first_page << PAGE_CACHE_SHIFT;
+ first_page_offset = first_page << PAGE_SHIFT;
/* offset of last_page */
- last_page_offset = last_page << PAGE_CACHE_SHIFT;
+ last_page_offset = last_page << PAGE_SHIFT;
/* truncate whole pages */
if (last_page_offset > first_page_offset) {