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author | avg <avg@FreeBSD.org> | 2013-11-29 15:34:43 +0000 |
---|---|---|
committer | avg <avg@FreeBSD.org> | 2013-11-29 15:34:43 +0000 |
commit | 16f88ac15b905ab203671bcdae855c720a12b25c (patch) | |
tree | 15e5e8fed465d74e2ebb940526b7c2f1598f47bf /sys/cddl | |
parent | 7a0711c3380ae85e73f9bd991ac55c882c4dae85 (diff) | |
download | FreeBSD-src-16f88ac15b905ab203671bcdae855c720a12b25c.zip FreeBSD-src-16f88ac15b905ab203671bcdae855c720a12b25c.tar.gz |
zfs: add dmu_write_pages variant for freebsd
The freebsd variant of dmu_write_pages is hidden under _KERNEL
to avoid needlessly pulling in vm_page_t declaration.
Besides, this function seems to be useless for ZFS userland counterpart.
MFC after: 15 days
Diffstat (limited to 'sys/cddl')
-rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c | 59 | ||||
-rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h | 7 |
2 files changed, 66 insertions, 0 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c index b079ee7..ccc36270 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c @@ -45,6 +45,7 @@ #include <sys/zio_compress.h> #include <sys/sa.h> #ifdef _KERNEL +#include <sys/vm.h> #include <sys/zfs_znode.h> #endif @@ -1184,6 +1185,64 @@ dmu_write_pages(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, dmu_buf_rele_array(dbp, numbufs, FTAG); return (err); } + +#else + +int +dmu_write_pages(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, + vm_page_t *ma, dmu_tx_t *tx) +{ + dmu_buf_t **dbp; + struct sf_buf *sf; + int numbufs, i; + int err; + + if (size == 0) + return (0); + + err = dmu_buf_hold_array(os, object, offset, size, + FALSE, FTAG, &numbufs, &dbp); + if (err) + return (err); + + for (i = 0; i < numbufs; i++) { + int tocpy, copied, thiscpy; + int bufoff; + dmu_buf_t *db = dbp[i]; + caddr_t va; + + ASSERT(size > 0); + ASSERT3U(db->db_size, >=, PAGESIZE); + + bufoff = offset - db->db_offset; + tocpy = (int)MIN(db->db_size - bufoff, size); + + ASSERT(i == 0 || i == numbufs-1 || tocpy == db->db_size); + + if (tocpy == db->db_size) + dmu_buf_will_fill(db, tx); + else + dmu_buf_will_dirty(db, tx); + + for (copied = 0; copied < tocpy; copied += PAGESIZE) { + ASSERT3U(ptoa((*ma)->pindex), ==, db->db_offset + bufoff); + thiscpy = MIN(PAGESIZE, tocpy - copied); + va = zfs_map_page(*ma, &sf); + bcopy(va, (char *)db->db_data + bufoff, thiscpy); + zfs_unmap_page(sf); + ma += 1; + bufoff += PAGESIZE; + } + + if (tocpy == db->db_size) + dmu_buf_fill_done(db, tx); + + offset += tocpy; + size -= tocpy; + } + dmu_buf_rele_array(dbp, numbufs, FTAG); + return (err); +} #endif /* sun */ #endif diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h index 973faf7..a10faa3 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h @@ -606,8 +606,15 @@ int dmu_write_uio(objset_t *os, uint64_t object, struct uio *uio, uint64_t size, dmu_tx_t *tx); int dmu_write_uio_dbuf(dmu_buf_t *zdb, struct uio *uio, uint64_t size, dmu_tx_t *tx); +#ifdef _KERNEL +#ifdef sun int dmu_write_pages(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, struct page *pp, dmu_tx_t *tx); +#else +int dmu_write_pages(objset_t *os, uint64_t object, uint64_t offset, + uint64_t size, struct vm_page **ppa, dmu_tx_t *tx); +#endif +#endif struct arc_buf *dmu_request_arcbuf(dmu_buf_t *handle, int size); void dmu_return_arcbuf(struct arc_buf *buf); void dmu_assign_arcbuf(dmu_buf_t *handle, uint64_t offset, struct arc_buf *buf, |