diff options
Diffstat (limited to 'fs')
63 files changed, 2082 insertions, 436 deletions
@@ -476,14 +476,21 @@ static void kiocb_batch_init(struct kiocb_batch *batch, long total) batch->count = total; } -static void kiocb_batch_free(struct kiocb_batch *batch) +static void kiocb_batch_free(struct kioctx *ctx, struct kiocb_batch *batch) { struct kiocb *req, *n; + if (list_empty(&batch->head)) + return; + + spin_lock_irq(&ctx->ctx_lock); list_for_each_entry_safe(req, n, &batch->head, ki_batch) { list_del(&req->ki_batch); + list_del(&req->ki_list); kmem_cache_free(kiocb_cachep, req); + ctx->reqs_active--; } + spin_unlock_irq(&ctx->ctx_lock); } /* @@ -1742,7 +1749,7 @@ long do_io_submit(aio_context_t ctx_id, long nr, } blk_finish_plug(&plug); - kiocb_batch_free(&batch); + kiocb_batch_free(ctx, &batch); put_ioctx(ctx); return i ? i : ret; } diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c index 9ef5b2914407..da8876d38a7b 100644 --- a/fs/autofs4/waitq.c +++ b/fs/autofs4/waitq.c @@ -76,7 +76,7 @@ static int autofs4_write(struct autofs_sb_info *sbi, data += wr; bytes -= wr; } - mutex_lock(&sbi->pipe_mutex); + mutex_unlock(&sbi->pipe_mutex); set_fs(fs); diff --git a/fs/block_dev.c b/fs/block_dev.c index afe74dda632b..0e575d1304b4 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1139,6 +1139,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) mutex_lock_nested(&bdev->bd_mutex, for_part); if (!bdev->bd_openers) { bdev->bd_disk = disk; + bdev->bd_queue = disk->queue; bdev->bd_contains = bdev; if (!partno) { struct backing_dev_info *bdi; @@ -1159,6 +1160,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) disk_put_part(bdev->bd_part); bdev->bd_part = NULL; bdev->bd_disk = NULL; + bdev->bd_queue = NULL; mutex_unlock(&bdev->bd_mutex); disk_unblock_events(disk); put_disk(disk); @@ -1232,6 +1234,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) disk_put_part(bdev->bd_part); bdev->bd_disk = NULL; bdev->bd_part = NULL; + bdev->bd_queue = NULL; bdev_inode_switch_bdi(bdev->bd_inode, &default_backing_dev_info); if (bdev != bdev->bd_contains) __blkdev_put(bdev->bd_contains, mode, 1); diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index f99a099a7747..d8525662ca7a 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -872,7 +872,8 @@ static int btree_submit_bio_hook(struct inode *inode, int rw, struct bio *bio, #ifdef CONFIG_MIGRATION static int btree_migratepage(struct address_space *mapping, - struct page *newpage, struct page *page) + struct page *newpage, struct page *page, + enum migrate_mode mode) { /* * we can't safely write a btree page from here, @@ -887,7 +888,7 @@ static int btree_migratepage(struct address_space *mapping, if (page_has_private(page) && !try_to_release_page(page, GFP_KERNEL)) return -EAGAIN; - return migrate_page(mapping, newpage, page); + return migrate_page(mapping, newpage, page, mode); } #endif diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 74fd74719dc2..618246bc2196 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -973,7 +973,7 @@ static int dentry_lease_is_valid(struct dentry *dentry) spin_lock(&dentry->d_lock); di = ceph_dentry(dentry); - if (di && di->lease_session) { + if (di->lease_session) { s = di->lease_session; spin_lock(&s->s_cap_lock); gen = s->s_cap_gen; @@ -1072,13 +1072,11 @@ static void ceph_d_release(struct dentry *dentry) struct ceph_dentry_info *di = ceph_dentry(dentry); dout("d_release %p\n", dentry); - if (di) { - ceph_dentry_lru_del(dentry); - if (di->lease_session) - ceph_put_mds_session(di->lease_session); - kmem_cache_free(ceph_dentry_cachep, di); - dentry->d_fsdata = NULL; - } + ceph_dentry_lru_del(dentry); + if (di->lease_session) + ceph_put_mds_session(di->lease_session); + kmem_cache_free(ceph_dentry_cachep, di); + dentry->d_fsdata = NULL; } static int ceph_snapdir_d_revalidate(struct dentry *dentry, @@ -1096,17 +1094,36 @@ static int ceph_snapdir_d_revalidate(struct dentry *dentry, */ void ceph_dir_set_complete(struct inode *inode) { - /* not yet implemented */ + struct dentry *dentry = d_find_any_alias(inode); + + if (dentry && ceph_dentry(dentry) && + ceph_test_mount_opt(ceph_sb_to_client(dentry->d_sb), DCACHE)) { + dout(" marking %p (%p) complete\n", inode, dentry); + set_bit(CEPH_D_COMPLETE, &ceph_dentry(dentry)->flags); + } + dput(dentry); } void ceph_dir_clear_complete(struct inode *inode) { - /* not yet implemented */ + struct dentry *dentry = d_find_any_alias(inode); + + if (dentry && ceph_dentry(dentry)) { + dout(" marking %p (%p) complete\n", inode, dentry); + set_bit(CEPH_D_COMPLETE, &ceph_dentry(dentry)->flags); + } + dput(dentry); } bool ceph_dir_test_complete(struct inode *inode) { - /* not yet implemented */ + struct dentry *dentry = d_find_any_alias(inode); + + if (dentry && ceph_dentry(dentry)) { + dout(" marking %p (%p) NOT complete\n", inode, dentry); + clear_bit(CEPH_D_COMPLETE, &ceph_dentry(dentry)->flags); + } + dput(dentry); return false; } @@ -1220,6 +1237,7 @@ static int ceph_dir_fsync(struct file *file, loff_t start, loff_t end, do { ceph_mdsc_get_request(req); spin_unlock(&ci->i_unsafe_lock); + dout("dir_fsync %p wait on tid %llu (until %llu)\n", inode, req->r_tid, last_tid); if (req->r_timeout) { @@ -1232,9 +1250,9 @@ static int ceph_dir_fsync(struct file *file, loff_t start, loff_t end, } else { wait_for_completion(&req->r_safe_completion); } - spin_lock(&ci->i_unsafe_lock); ceph_mdsc_put_request(req); + spin_lock(&ci->i_unsafe_lock); if (ret || list_empty(head)) break; req = list_entry(head->next, @@ -1259,13 +1277,11 @@ void ceph_dentry_lru_add(struct dentry *dn) dout("dentry_lru_add %p %p '%.*s'\n", di, dn, dn->d_name.len, dn->d_name.name); - if (di) { - mdsc = ceph_sb_to_client(dn->d_sb)->mdsc; - spin_lock(&mdsc->dentry_lru_lock); - list_add_tail(&di->lru, &mdsc->dentry_lru); - mdsc->num_dentry++; - spin_unlock(&mdsc->dentry_lru_lock); - } + mdsc = ceph_sb_to_client(dn->d_sb)->mdsc; + spin_lock(&mdsc->dentry_lru_lock); + list_add_tail(&di->lru, &mdsc->dentry_lru); + mdsc->num_dentry++; + spin_unlock(&mdsc->dentry_lru_lock); } void ceph_dentry_lru_touch(struct dentry *dn) @@ -1275,12 +1291,10 @@ void ceph_dentry_lru_touch(struct dentry *dn) dout("dentry_lru_touch %p %p '%.*s' (offset %lld)\n", di, dn, dn->d_name.len, dn->d_name.name, di->offset); - if (di) { - mdsc = ceph_sb_to_client(dn->d_sb)->mdsc; - spin_lock(&mdsc->dentry_lru_lock); - list_move_tail(&di->lru, &mdsc->dentry_lru); - spin_unlock(&mdsc->dentry_lru_lock); - } + mdsc = ceph_sb_to_client(dn->d_sb)->mdsc; + spin_lock(&mdsc->dentry_lru_lock); + list_move_tail(&di->lru, &mdsc->dentry_lru); + spin_unlock(&mdsc->dentry_lru_lock); } void ceph_dentry_lru_del(struct dentry *dn) @@ -1290,13 +1304,11 @@ void ceph_dentry_lru_del(struct dentry *dn) dout("dentry_lru_del %p %p '%.*s'\n", di, dn, dn->d_name.len, dn->d_name.name); - if (di) { - mdsc = ceph_sb_to_client(dn->d_sb)->mdsc; - spin_lock(&mdsc->dentry_lru_lock); - list_del_init(&di->lru); - mdsc->num_dentry--; - spin_unlock(&mdsc->dentry_lru_lock); - } + mdsc = ceph_sb_to_client(dn->d_sb)->mdsc; + spin_lock(&mdsc->dentry_lru_lock); + list_del_init(&di->lru); + mdsc->num_dentry--; + spin_unlock(&mdsc->dentry_lru_lock); } /* diff --git a/fs/ceph/export.c b/fs/ceph/export.c index 9fbcdecaaccd..fbb2a643ef10 100644 --- a/fs/ceph/export.c +++ b/fs/ceph/export.c @@ -56,9 +56,7 @@ static int ceph_encode_fh(struct dentry *dentry, u32 *rawfh, int *max_len, return -EINVAL; spin_lock(&dentry->d_lock); - parent = dget(dentry->d_parent); - spin_unlock(&dentry->d_lock); - + parent = dentry->d_parent; if (*max_len >= connected_handle_length) { dout("encode_fh %p connectable\n", dentry); cfh->ino = ceph_ino(dentry->d_inode); @@ -81,7 +79,7 @@ static int ceph_encode_fh(struct dentry *dentry, u32 *rawfh, int *max_len, *max_len = handle_length; type = 255; } - dput(parent); + spin_unlock(&dentry->d_lock); return type; } diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 25283e7a37f8..2c489378b4cd 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -850,11 +850,12 @@ static void ceph_set_dentry_offset(struct dentry *dn) { struct dentry *dir = dn->d_parent; struct inode *inode = dir->d_inode; - struct ceph_inode_info *ci = ceph_inode(inode); + struct ceph_inode_info *ci; struct ceph_dentry_info *di; BUG_ON(!inode); + ci = ceph_inode(inode); di = ceph_dentry(dn); spin_lock(&ci->i_ceph_lock); diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 6203d805eb45..23ab6a3f1825 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2772,7 +2772,7 @@ static void handle_lease(struct ceph_mds_client *mdsc, di = ceph_dentry(dentry); switch (h->action) { case CEPH_MDS_LEASE_REVOKE: - if (di && di->lease_session == session) { + if (di->lease_session == session) { if (ceph_seq_cmp(di->lease_seq, seq) > 0) h->seq = cpu_to_le32(di->lease_seq); __ceph_mdsc_drop_dentry_lease(dentry); @@ -2781,7 +2781,7 @@ static void handle_lease(struct ceph_mds_client *mdsc, break; case CEPH_MDS_LEASE_RENEW: - if (di && di->lease_session == session && + if (di->lease_session == session && di->lease_gen == session->s_cap_gen && di->lease_renew_from && di->lease_renew_after == 0) { diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 48f61a12af66..00de2c9568cd 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -131,6 +131,8 @@ enum { Opt_rbytes, Opt_norbytes, Opt_noasyncreaddir, + Opt_dcache, + Opt_nodcache, Opt_ino32, }; @@ -152,6 +154,8 @@ static match_table_t fsopt_tokens = { {Opt_rbytes, "rbytes"}, {Opt_norbytes, "norbytes"}, {Opt_noasyncreaddir, "noasyncreaddir"}, + {Opt_dcache, "dcache"}, + {Opt_nodcache, "nodcache"}, {Opt_ino32, "ino32"}, {-1, NULL} }; @@ -231,6 +235,12 @@ static int parse_fsopt_token(char *c, void *private) case Opt_noasyncreaddir: fsopt->flags |= CEPH_MOUNT_OPT_NOASYNCREADDIR; break; + case Opt_dcache: + fsopt->flags |= CEPH_MOUNT_OPT_DCACHE; + break; + case Opt_nodcache: + fsopt->flags &= ~CEPH_MOUNT_OPT_DCACHE; + break; case Opt_ino32: fsopt->flags |= CEPH_MOUNT_OPT_INO32; break; @@ -377,6 +387,10 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root) seq_puts(m, ",norbytes"); if (fsopt->flags & CEPH_MOUNT_OPT_NOASYNCREADDIR) seq_puts(m, ",noasyncreaddir"); + if (fsopt->flags & CEPH_MOUNT_OPT_DCACHE) + seq_puts(m, ",dcache"); + else + seq_puts(m, ",nodcache"); if (fsopt->wsize) seq_printf(m, ",wsize=%d", fsopt->wsize); @@ -647,10 +661,10 @@ static struct dentry *open_root_dentry(struct ceph_fs_client *fsc, root = ERR_PTR(-ENOMEM); goto out; } - ceph_init_dentry(root); } else { root = d_obtain_alias(inode); } + ceph_init_dentry(root); dout("open_root_inode success, root dentry is %p\n", root); } else { root = ERR_PTR(err); diff --git a/fs/ceph/super.h b/fs/ceph/super.h index cb3652b37271..1421f3d875a2 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -28,6 +28,7 @@ #define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ #define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ #define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ +#define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ #define CEPH_MOUNT_OPT_DEFAULT (CEPH_MOUNT_OPT_RBYTES) diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c index a5e36e4488a7..857214ae8c08 100644 --- a/fs/ceph/xattr.c +++ b/fs/ceph/xattr.c @@ -818,6 +818,7 @@ int ceph_removexattr(struct dentry *dentry, const char *name) struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode); int issued; int err; + int required_blob_size; int dirty; if (ceph_snap(inode) != CEPH_NOSNAP) @@ -833,14 +834,34 @@ int ceph_removexattr(struct dentry *dentry, const char *name) return -EOPNOTSUPP; } + err = -ENOMEM; spin_lock(&ci->i_ceph_lock); __build_xattrs(inode); +retry: issued = __ceph_caps_issued(ci, NULL); dout("removexattr %p issued %s\n", inode, ceph_cap_string(issued)); if (!(issued & CEPH_CAP_XATTR_EXCL)) goto do_sync; + required_blob_size = __get_required_blob_size(ci, 0, 0); + + if (!ci->i_xattrs.prealloc_blob || + required_blob_size > ci->i_xattrs.prealloc_blob->alloc_len) { + struct ceph_buffer *blob; + + spin_unlock(&ci->i_ceph_lock); + dout(" preaallocating new blob size=%d\n", required_blob_size); + blob = ceph_buffer_new(required_blob_size, GFP_NOFS); + if (!blob) + goto out; + spin_lock(&ci->i_ceph_lock); + if (ci->i_xattrs.prealloc_blob) + ceph_buffer_put(ci->i_xattrs.prealloc_blob); + ci->i_xattrs.prealloc_blob = blob; + goto retry; + } + err = __remove_xattr_by_name(ceph_inode(inode), name); dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL); ci->i_xattrs.dirty = true; @@ -853,6 +874,7 @@ int ceph_removexattr(struct dentry *dentry, const char *name) do_sync: spin_unlock(&ci->i_ceph_lock); err = ceph_send_removexattr(dentry, name); +out: return err; } diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index a10e428b32b4..a26bea10e81b 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -105,6 +105,7 @@ #include <linux/hiddev.h> +#define __DVB_CORE__ #include <linux/dvb/audio.h> #include <linux/dvb/dmx.h> #include <linux/dvb/frontend.h> diff --git a/fs/dcache.c b/fs/dcache.c index 616fedff011a..16a53cc2cc02 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -1475,7 +1475,14 @@ static struct dentry * __d_find_any_alias(struct inode *inode) return alias; } -static struct dentry * d_find_any_alias(struct inode *inode) +/** + * d_find_any_alias - find any alias for a given inode + * @inode: inode to find an alias for + * + * If any aliases exist for the given inode, take and return a + * reference for one of them. If no aliases exist, return %NULL. + */ +struct dentry *d_find_any_alias(struct inode *inode) { struct dentry *de; @@ -1484,7 +1491,7 @@ static struct dentry * d_find_any_alias(struct inode *inode) spin_unlock(&inode->i_lock); return de; } - +EXPORT_SYMBOL(d_find_any_alias); /** * d_obtain_alias - find or allocate a dentry for a given inode diff --git a/fs/direct-io.c b/fs/direct-io.c index d740ab67ff6e..4a588dbd11bf 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -36,6 +36,7 @@ #include <linux/rwsem.h> #include <linux/uio.h> #include <linux/atomic.h> +#include <linux/prefetch.h> /* * How many user pages to map in one call to get_user_pages(). This determines @@ -580,9 +581,8 @@ static int get_more_blocks(struct dio *dio, struct dio_submit *sdio, { int ret; sector_t fs_startblk; /* Into file, in filesystem-sized blocks */ + sector_t fs_endblk; /* Into file, in filesystem-sized blocks */ unsigned long fs_count; /* Number of filesystem-sized blocks */ - unsigned long dio_count;/* Number of dio_block-sized blocks */ - unsigned long blkmask; int create; /* @@ -593,11 +593,9 @@ static int get_more_blocks(struct dio *dio, struct dio_submit *sdio, if (ret == 0) { BUG_ON(sdio->block_in_file >= sdio->final_block_in_request); fs_startblk = sdio->block_in_file >> sdio->blkfactor; - dio_count = sdio->final_block_in_request - sdio->block_in_file; - fs_count = dio_count >> sdio->blkfactor; - blkmask = (1 << sdio->blkfactor) - 1; - if (dio_count & blkmask) - fs_count++; + fs_endblk = (sdio->final_block_in_request - 1) >> + sdio->blkfactor; + fs_count = fs_endblk - fs_startblk + 1; map_bh->b_state = 0; map_bh->b_size = fs_count << dio->inode->i_blkbits; @@ -1090,8 +1088,8 @@ static inline int drop_refcount(struct dio *dio) * individual fields and will generate much worse code. This is important * for the whole file. */ -ssize_t -__blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, +static inline ssize_t +do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, struct block_device *bdev, const struct iovec *iov, loff_t offset, unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io, dio_submit_t submit_io, int flags) @@ -1100,7 +1098,6 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, size_t size; unsigned long addr; unsigned blkbits = inode->i_blkbits; - unsigned bdev_blkbits = 0; unsigned blocksize_mask = (1 << blkbits) - 1; ssize_t retval = -EINVAL; loff_t end = offset; @@ -1113,12 +1110,14 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, if (rw & WRITE) rw = WRITE_ODIRECT; - if (bdev) - bdev_blkbits = blksize_bits(bdev_logical_block_size(bdev)); + /* + * Avoid references to bdev if not absolutely needed to give + * the early prefetch in the caller enough time. + */ if (offset & blocksize_mask) { if (bdev) - blkbits = bdev_blkbits; + blkbits = blksize_bits(bdev_logical_block_size(bdev)); blocksize_mask = (1 << blkbits) - 1; if (offset & blocksize_mask) goto out; @@ -1129,11 +1128,13 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, addr = (unsigned long)iov[seg].iov_base; size = iov[seg].iov_len; end += size; - if ((addr & blocksize_mask) || (size & blocksize_mask)) { + if (unlikely((addr & blocksize_mask) || + (size & blocksize_mask))) { if (bdev) - blkbits = bdev_blkbits; + blkbits = blksize_bits( + bdev_logical_block_size(bdev)); blocksize_mask = (1 << blkbits) - 1; - if ((addr & blocksize_mask) || (size & blocksize_mask)) + if (( |