diff options
Diffstat (limited to 'fs')
34 files changed, 200 insertions, 107 deletions
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c index cd7f5f4..8b15cf8 100644 --- a/fs/ext2/ialloc.c +++ b/fs/ext2/ialloc.c @@ -573,8 +573,11 @@ got: inode->i_generation = sbi->s_next_generation++; spin_unlock(&sbi->s_next_gen_lock); if (insert_inode_locked(inode) < 0) { - err = -EINVAL; - goto fail_drop; + ext2_error(sb, "ext2_new_inode", + "inode number already in use - inode=%lu", + (unsigned long) ino); + err = -EIO; + goto fail; } dquot_initialize(inode); diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 91a6945..740cad8 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -26,7 +26,6 @@ #include <linux/highuid.h> #include <linux/pagemap.h> #include <linux/quotaops.h> -#include <linux/module.h> #include <linux/writeback.h> #include <linux/buffer_head.h> #include <linux/mpage.h> @@ -36,10 +35,6 @@ #include "acl.h" #include "xip.h" -MODULE_AUTHOR("Remy Card and others"); -MODULE_DESCRIPTION("Second Extended Filesystem"); -MODULE_LICENSE("GPL"); - static int __ext2_write_inode(struct inode *inode, int do_sync); /* diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 9b403f0..0090595 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -1520,5 +1520,8 @@ static void __exit exit_ext2_fs(void) exit_ext2_xattr(); } +MODULE_AUTHOR("Remy Card and others"); +MODULE_DESCRIPTION("Second Extended Filesystem"); +MODULE_LICENSE("GPL"); module_init(init_ext2_fs) module_exit(exit_ext2_fs) diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c index d27b71f..6dcafc7 100644 --- a/fs/ext2/xattr.c +++ b/fs/ext2/xattr.c @@ -54,7 +54,6 @@ */ #include <linux/buffer_head.h> -#include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/mbcache.h> diff --git a/fs/ext2/xattr_security.c b/fs/ext2/xattr_security.c index c922adc..be7a8d0 100644 --- a/fs/ext2/xattr_security.c +++ b/fs/ext2/xattr_security.c @@ -3,7 +3,6 @@ * Handler for storing security labels as extended attributes. */ -#include <linux/module.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/fs.h> diff --git a/fs/ext2/xattr_trusted.c b/fs/ext2/xattr_trusted.c index 667e46a..2989467 100644 --- a/fs/ext2/xattr_trusted.c +++ b/fs/ext2/xattr_trusted.c @@ -5,7 +5,6 @@ * Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org> */ -#include <linux/module.h> #include <linux/string.h> #include <linux/capability.h> #include <linux/fs.h> diff --git a/fs/ext2/xattr_user.c b/fs/ext2/xattr_user.c index 099d20f..f470e44 100644 --- a/fs/ext2/xattr_user.c +++ b/fs/ext2/xattr_user.c @@ -6,7 +6,6 @@ */ #include <linux/init.h> -#include <linux/module.h> #include <linux/string.h> #include "ext2.h" #include "xattr.h" diff --git a/fs/ext3/ialloc.c b/fs/ext3/ialloc.c index 92cc86d..1cde284 100644 --- a/fs/ext3/ialloc.c +++ b/fs/ext3/ialloc.c @@ -525,8 +525,12 @@ got: if (IS_DIRSYNC(inode)) handle->h_sync = 1; if (insert_inode_locked(inode) < 0) { - err = -EINVAL; - goto fail_drop; + /* + * Likely a bitmap corruption causing inode to be allocated + * twice. + */ + err = -EIO; + goto fail; } spin_lock(&sbi->s_next_gen_lock); inode->i_generation = sbi->s_next_generation++; diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index 15cb470..2d0afec 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -22,7 +22,6 @@ * Assorted race fixes, rewrite of ext3_get_block() by Al Viro, 2000 */ -#include <linux/module.h> #include <linux/fs.h> #include <linux/time.h> #include <linux/ext3_jbd.h> @@ -223,8 +222,12 @@ void ext3_evict_inode (struct inode *inode) * * Note that directories do not have this problem because they don't * use page cache. + * + * The s_journal check handles the case when ext3_get_journal() fails + * and puts the journal inode. */ if (inode->i_nlink && ext3_should_journal_data(inode) && + EXT3_SB(inode->i_sb)->s_journal && (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode))) { tid_t commit_tid = atomic_read(&ei->i_datasync_tid); journal_t *journal = EXT3_SB(inode->i_sb)->s_journal; @@ -1132,9 +1135,11 @@ struct buffer_head *ext3_bread(handle_t *handle, struct inode *inode, bh = ext3_getblk(handle, inode, block, create, err); if (!bh) return bh; - if (buffer_uptodate(bh)) + if (bh_uptodate_or_lock(bh)) return bh; - ll_rw_block(READ | REQ_META | REQ_PRIO, 1, &bh); + get_bh(bh); + bh->b_end_io = end_buffer_read_sync; + submit_bh(READ | REQ_META | REQ_PRIO, bh); wait_on_buffer(bh); if (buffer_uptodate(bh)) return bh; @@ -1617,7 +1622,13 @@ static int ext3_ordered_writepage(struct page *page, int err; J_ASSERT(PageLocked(page)); - WARN_ON_ONCE(IS_RDONLY(inode)); + /* + * We don't want to warn for emergency remount. The condition is + * ordered to avoid dereferencing inode->i_sb in non-error case to + * avoid slow-downs. + */ + WARN_ON_ONCE(IS_RDONLY(inode) && + !(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ERROR_FS)); /* * We give up here if we're reentered, because it might be for a @@ -1692,7 +1703,13 @@ static int ext3_writeback_writepage(struct page *page, int err; J_ASSERT(PageLocked(page)); - WARN_ON_ONCE(IS_RDONLY(inode)); + /* + * We don't want to warn for emergency remount. The condition is + * ordered to avoid dereferencing inode->i_sb in non-error case to + * avoid slow-downs. + */ + WARN_ON_ONCE(IS_RDONLY(inode) && + !(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ERROR_FS)); if (ext3_journal_current_handle()) goto out_fail; @@ -1735,7 +1752,13 @@ static int ext3_journalled_writepage(struct page *page, int err; J_ASSERT(PageLocked(page)); - WARN_ON_ONCE(IS_RDONLY(inode)); + /* + * We don't want to warn for emergency remount. The condition is + * ordered to avoid dereferencing inode->i_sb in non-error case to + * avoid slow-downs. + */ + WARN_ON_ONCE(IS_RDONLY(inode) && + !(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ERROR_FS)); if (ext3_journal_current_handle()) goto no_write; @@ -2064,12 +2087,10 @@ static int ext3_block_truncate_page(struct inode *inode, loff_t from) if (PageUptodate(page)) set_buffer_uptodate(bh); - if (!buffer_uptodate(bh)) { - err = -EIO; - ll_rw_block(READ, 1, &bh); - wait_on_buffer(bh); + if (!bh_uptodate_or_lock(bh)) { + err = bh_submit_read(bh); /* Uhhuh. Read error. Complain and punt. */ - if (!buffer_uptodate(bh)) + if (err) goto unlock; } diff --git a/fs/ext3/ioctl.c b/fs/ext3/ioctl.c index 8e37c41..4af574c 100644 --- a/fs/ext3/ioctl.c +++ b/fs/ext3/ioctl.c @@ -134,10 +134,11 @@ flags_out: goto setversion_out; } + mutex_lock(&inode->i_mutex); handle = ext3_journal_start(inode, 1); if (IS_ERR(handle)) { err = PTR_ERR(handle); - goto setversion_out; + goto unlock_out; } err = ext3_reserve_inode_write(handle, inode, &iloc); if (err == 0) { @@ -146,6 +147,9 @@ flags_out: err = ext3_mark_iloc_dirty(handle, inode, &iloc); } ext3_journal_stop(handle); + +unlock_out: + mutex_unlock(&inode->i_mutex); setversion_out: mnt_drop_write_file(filp); return err; diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c index d269821..e8e2117 100644 --- a/fs/ext3/namei.c +++ b/fs/ext3/namei.c @@ -921,9 +921,12 @@ restart: num++; bh = ext3_getblk(NULL, dir, b++, 0, &err); bh_use[ra_max] = bh; - if (bh) - ll_rw_block(READ | REQ_META | REQ_PRIO, - 1, &bh); + if (bh && !bh_uptodate_or_lock(bh)) { + get_bh(bh); + bh->b_end_io = end_buffer_read_sync; + submit_bh(READ | REQ_META | REQ_PRIO, + bh); + } } } if ((bh = bh_use[ra_ptr++]) == NULL) diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 3a10b88..726c7ef 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -2059,9 +2059,10 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) EXT3_SB(sb)->s_mount_state |= EXT3_ORPHAN_FS; ext3_orphan_cleanup(sb, es); EXT3_SB(sb)->s_mount_state &= ~EXT3_ORPHAN_FS; - if (needs_recovery) + if (needs_recovery) { + ext3_mark_recovery_complete(sb, es); ext3_msg(sb, KERN_INFO, "recovery complete"); - ext3_mark_recovery_complete(sb, es); + } ext3_msg(sb, KERN_INFO, "mounted filesystem with %s data mode", test_opt(sb,DATA_FLAGS) == EXT3_MOUNT_JOURNAL_DATA ? "journal": test_opt(sb,DATA_FLAGS) == EXT3_MOUNT_ORDERED_DATA ? "ordered": @@ -2229,11 +2230,11 @@ static journal_t *ext3_get_dev_journal(struct super_block *sb, goto out_bdev; } journal->j_private = sb; - ll_rw_block(READ, 1, &journal->j_sb_buffer); - wait_on_buffer(journal->j_sb_buffer); - if (!buffer_uptodate(journal->j_sb_buffer)) { - ext3_msg(sb, KERN_ERR, "I/O error on journal device"); - goto out_journal; + if (!bh_uptodate_or_lock(journal->j_sb_buffer)) { + if (bh_submit_read(journal->j_sb_buffer)) { + ext3_msg(sb, KERN_ERR, "I/O error on journal device"); + goto out_journal; + } } if (be32_to_cpu(journal->j_superblock->s_nr_users) != 1) { ext3_msg(sb, KERN_ERR, diff --git a/fs/ext3/xattr_security.c b/fs/ext3/xattr_security.c index 3c218b8..ea26f2a 100644 --- a/fs/ext3/xattr_security.c +++ b/fs/ext3/xattr_security.c @@ -3,7 +3,6 @@ * Handler for storing security labels as extended attributes. */ -#include <linux/module.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/fs.h> diff --git a/fs/ext3/xattr_trusted.c b/fs/ext3/xattr_trusted.c index dc8edda..2526a88 100644 --- a/fs/ext3/xattr_trusted.c +++ b/fs/ext3/xattr_trusted.c @@ -5,7 +5,6 @@ * Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org> */ -#include <linux/module.h> #include <linux/string.h> #include <linux/capability.h> #include <linux/fs.h> diff --git a/fs/ext3/xattr_user.c b/fs/ext3/xattr_user.c index 7a32197..b32e473 100644 --- a/fs/ext3/xattr_user.c +++ b/fs/ext3/xattr_user.c @@ -5,7 +5,6 @@ * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> */ -#include <linux/module.h> #include <linux/string.h> #include <linux/fs.h> #include <linux/ext3_jbd.h> diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c index 8efb2f0..3f11656 100644 --- a/fs/ext4/block_validity.c +++ b/fs/ext4/block_validity.c @@ -13,7 +13,6 @@ #include <linux/namei.h> #include <linux/quotaops.h> #include <linux/buffer_head.h> -#include <linux/module.h> #include <linux/swap.h> #include <linux/pagemap.h> #include <linux/blkdev.h> diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 607b155..841faf5 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -29,7 +29,6 @@ * - smart tree reduction */ -#include <linux/module.h> #include <linux/fs.h> #include <linux/time.h> #include <linux/jbd2.h> diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c index 3cfc73f..830e1b2 100644 --- a/fs/ext4/indirect.c +++ b/fs/ext4/indirect.c @@ -20,7 +20,6 @@ * (sct@redhat.com), 1993, 1998 */ -#include <linux/module.h> #include "ext4_jbd2.h" #include "truncate.h" diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 7dbcc3e..aa8efa6 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -18,7 +18,6 @@ * Assorted race fixes, rewrite of ext4_get_block() by Al Viro, 2000 */ -#include <linux/module.h> #include <linux/fs.h> #include <linux/time.h> #include <linux/jbd2.h> diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index d37b3bb..e87a932 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -158,10 +158,11 @@ flags_out: goto setversion_out; } + mutex_lock(&inode->i_mutex); handle = ext4_journal_start(inode, 1); if (IS_ERR(handle)) { err = PTR_ERR(handle); - goto setversion_out; + goto unlock_out; } err = ext4_reserve_inode_write(handle, inode, &iloc); if (err == 0) { @@ -170,6 +171,9 @@ flags_out: err = ext4_mark_iloc_dirty(handle, inode, &iloc); } ext4_journal_stop(handle); + +unlock_out: + mutex_unlock(&inode->i_mutex); setversion_out: mnt_drop_write_file(filp); return err; diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c index 16ac228..e7d6bb0 100644 --- a/fs/ext4/migrate.c +++ b/fs/ext4/migrate.c @@ -12,7 +12,6 @@ * */ -#include <linux/module.h> #include <linux/slab.h> #include "ext4_jbd2.h" diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 7e106c8..4758518 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -6,7 +6,6 @@ * Written by Theodore Ts'o, 2010. */ -#include <linux/module.h> #include <linux/fs.h> #include <linux/time.h> #include <linux/jbd2.h> diff --git a/fs/ext4/xattr_security.c b/fs/ext4/xattr_security.c index 34e4350..b60f9f8 100644 --- a/fs/ext4/xattr_security.c +++ b/fs/ext4/xattr_security.c @@ -3,7 +3,6 @@ * Handler for storing security labels as extended attributes. */ -#include <linux/module.h> #include <linux/string.h> #include <linux/fs.h> #include <linux/security.h> diff --git a/fs/ext4/xattr_trusted.c b/fs/ext4/xattr_trusted.c index 37e6ebc..95f1f4a 100644 --- a/fs/ext4/xattr_trusted.c +++ b/fs/ext4/xattr_trusted.c @@ -5,7 +5,6 @@ * Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org> */ -#include <linux/module.h> #include <linux/string.h> #include <linux/capability.h> #include <linux/fs.h> diff --git a/fs/ext4/xattr_user.c b/fs/ext4/xattr_user.c index 98c3753..0edb7611 100644 --- a/fs/ext4/xattr_user.c +++ b/fs/ext4/xattr_user.c @@ -5,7 +5,6 @@ * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> */ -#include <linux/module.h> #include <linux/string.h> #include <linux/fs.h> #include "ext4_jbd2.h" diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c index 8799207..f2b9a57 100644 --- a/fs/jbd/commit.c +++ b/fs/jbd/commit.c @@ -392,6 +392,12 @@ void journal_commit_transaction(journal_t *journal) jbd_debug (3, "JBD: commit phase 1\n"); /* + * Clear revoked flag to reflect there is no revoked buffers + * in the next transaction which is going to be started. + */ + journal_clear_buffer_revoked_flags(journal); + + /* * Switch to a new revoke table. */ journal_switch_revoke_table(journal); diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c index a96cff0..59c09f9 100644 --- a/fs/jbd/journal.c +++ b/fs/jbd/journal.c @@ -721,7 +721,6 @@ static journal_t * journal_init_common (void) init_waitqueue_head(&journal->j_wait_checkpoint); init_waitqueue_head(&journal->j_wait_commit); init_waitqueue_head(&journal->j_wait_updates); - mutex_init(&journal->j_barrier); mutex_init(&journal->j_checkpoint_mutex); spin_lock_init(&journal->j_revoke_lock); spin_lock_init(&journal->j_list_lock); diff --git a/fs/jbd/revoke.c b/fs/jbd/revoke.c index 305a907..25c713e 100644 --- a/fs/jbd/revoke.c +++ b/fs/jbd/revoke.c @@ -47,6 +47,10 @@ * overwriting the new data. We don't even need to clear the revoke * bit here. * + * We cache revoke status of a buffer in the current transaction in b_states + * bits. As the name says, revokevalid flag indicates that the cached revoke + * status of a buffer is valid and we can rely on the cached status. + * * Revoke information on buffers is a tri-state value: * * RevokeValid clear: no cached revoke status, need to look it up @@ -479,6 +483,36 @@ int journal_cancel_revoke(handle_t *handle, struct journal_head *jh) return did_revoke; } +/* + * journal_clear_revoked_flags clears revoked flag of buffers in + * revoke table to reflect there is no revoked buffer in the next + * transaction which is going to be started. + */ +void journal_clear_buffer_revoked_flags(journal_t *journal) +{ + struct jbd_revoke_table_s *revoke = journal->j_revoke; + int i = 0; + + for (i = 0; i < revoke->hash_size; i++) { + struct list_head *hash_list; + struct list_head *list_entry; + hash_list = &revoke->hash_table[i]; + + list_for_each(list_entry, hash_list) { + struct jbd_revoke_record_s *record; + struct buffer_head *bh; + record = (struct jbd_revoke_record_s *)list_entry; + bh = __find_get_block(journal->j_fs_dev, + record->blocknr, + journal->j_blocksize); + if (bh) { + clear_buffer_revoked(bh); + __brelse(bh); + } + } + } +} + /* journal_switch_revoke table select j_revoke for next transaction * we do not want to suspend any processing until all revokes are * written -bzzz diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c index 7e59c6e..7fce94b 100644 --- a/fs/jbd/transaction.c +++ b/fs/jbd/transaction.c @@ -426,17 +426,34 @@ int journal_restart(handle_t *handle, int nblocks) * void journal_lock_updates () - establish a transaction barrier. * @journal: Journal to establish a barrier on. * - * This locks out any further updates from being started, and blocks - * until all existing updates have completed, returning only once the - * journal is in a quiescent state with no updates running. - * - * The journal lock should not be held on entry. + * This locks out any further updates from being started, and blocks until all + * existing updates have completed, returning only once the journal is in a + * quiescent state with no updates running. + * + * We do not use simple mutex for synchronization as there are syscalls which + * want to return with filesystem locked and that trips up lockdep. Also + * hibernate needs to lock filesystem but locked mutex then blocks hibernation. + * Since locking filesystem is rare operation, we use simple counter and + * waitqueue for locking. */ void journal_lock_updates(journal_t *journal) { DEFINE_WAIT(wait); +wait: + /* Wait for previous locked operation to finish */ + wait_event(journal->j_wait_transaction_locked, + journal->j_barrier_count == 0); + spin_lock(&journal->j_state_lock); + /* + * Check reliably under the lock whether we are the ones winning the race + * and locking the journal + */ + if (journal->j_barrier_count > 0) { + spin_unlock(&journal->j_state_lock); + goto wait; + } ++journal->j_barrier_count; /* Wait until there are no running updates */ @@ -460,14 +477,6 @@ void journal_lock_updates(journal_t *journal) spin_lock(&journal->j_state_lock); } spin_unlock(&journal->j_state_lock); - - /* - * We have now established a barrier against other normal updates, but - * we also need to barrier against other journal_lock_updates() calls - * to make sure that we serialise special journal-locked operations - * too. - */ - mutex_lock(&journal->j_barrier); } /** @@ -475,14 +484,11 @@ void journal_lock_updates(journal_t *journal) * @journal: Journal to release the barrier on. * * Release a transaction barrier obtained with journal_lock_updates(). - * - * Should be called without the journal lock held. */ void journal_unlock_updates (journal_t *journal) { J_ASSERT(journal->j_barrier_count != 0); - mutex_unlock(&journal->j_barrier); spin_lock(&journal->j_state_lock); --journal->j_barrier_count; spin_unlock(&journal->j_state_lock); diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 19c454e..1d42e70 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -455,16 +455,20 @@ int remove_save_link(struct inode *inode, int truncate) static void reiserfs_kill_sb(struct super_block *s) { if (REISERFS_SB(s)) { - if (REISERFS_SB(s)->xattr_root) { - d_invalidate(REISERFS_SB(s)->xattr_root); - dput(REISERFS_SB(s)->xattr_root); - REISERFS_SB(s)->xattr_root = NULL; - } - if (REISERFS_SB(s)->priv_root) { - d_invalidate(REISERFS_SB(s)->priv_root); - dput(REISERFS_SB(s)->priv_root); - REISERFS_SB(s)->priv_root = NULL; - } + /* + * Force any pending inode evictions to occur now. Any + * inodes to be removed that have extended attributes + * associated with them need to clean them up before + * we can release the extended attribute root dentries. + * shrink_dcache_for_umount will BUG if we don't release + * those before it's called so ->put_super is too late. + */ + shrink_dcache_sb(s); + + dput(REISERFS_SB(s)->xattr_root); + REISERFS_SB(s)->xattr_root = NULL; + dput(REISERFS_SB(s)->priv_root); + REISERFS_SB(s)->priv_root = NULL; } kill_block_super(s); @@ -1249,7 +1253,8 @@ static void handle_quota_files(struct super_block *s, char **qf_names, kfree(REISERFS_SB(s)->s_qf_names[i]); REISERFS_SB(s)->s_qf_names[i] = qf_names[i]; } - REISERFS_SB(s)->s_jquota_fmt = *qfmt; + if (*qfmt) + REISERFS_SB(s)->s_jquota_fmt = *qfmt; } #endif diff --git a/fs/udf/file.c b/fs/udf/file.c index d8ffa7c..dca0c38 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -125,7 +125,6 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov, err = udf_expand_file_adinicb(inode); if (err) { udf_debug("udf_expand_adinicb: err=%d\n", err); - up_write(&iinfo->i_data_sem); return err; } } else { @@ -133,9 +132,10 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov, iinfo->i_lenAlloc = pos + count; else iinfo->i_lenAlloc = inode->i_size; + up_write(&iinfo->i_data_sem); } - } - up_write(&iinfo->i_data_sem); + } else + up_write(&iinfo->i_data_sem); retval = generic_file_aio_write(iocb, iov, nr_segs, ppos); if (retval > 0) diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 4598904..7699df7 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -53,8 +53,7 @@ static int udf_update_inode(struct inode *, int); static void udf_fill_inode(struct inode *, struct buffer_head *); static int udf_sync_inode(struct inode *inode); static int udf_alloc_i_data(struct inode *inode, size_t size); -static struct buffer_head *inode_getblk(struct inode *, sector_t, int *, - sector_t *, int *); +static sector_t inode_getblk(struct inode *, sector_t, int *, int *); static int8_t udf_insert_aext(struct inode *, struct extent_position, struct kernel_lb_addr, uint32_t); static void udf_split_extents(struct inode *, int *, int, int, @@ -151,6 +150,12 @@ const struct address_space_operations udf_aops = { .bmap = udf_bmap, }; +/* + * Expand file stored in ICB to a normal one-block-file + * + * This function requires i_data_sem for writing and releases it. + * This function requires i_mutex held + */ int udf_expand_file_adinicb(struct inode *inode) { struct page *page; @@ -169,9 +174,15 @@ int udf_expand_file_adinicb(struct inode *inode) iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; /* from now on we have normal address_space methods */ inode->i_data.a_ops = &udf_aops; + up_write(&iinfo->i_data_sem); mark_inode_dirty(inode); return 0; } + /* + * Release i_data_sem so that we can lock a page - page lock ranks + * above i_data_sem. i_mutex still protects us against file changes. + */ + up_write(&iinfo->i_data_sem); page = find_or_create_page(inode->i_mapping, 0, GFP_NOFS); if (!page) @@ -187,6 +198,7 @@ int udf_expand_file_adinicb(struct inode *inode) SetPageUptodate(page); kunmap(page); } + down_write(&iinfo->i_data_sem); memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0x00, iinfo->i_lenAlloc); iinfo->i_lenAlloc = 0; @@ -196,17 +208,20 @@ int udf_expand_file_adinicb(struct inode *inode) iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; /* from now on we have normal address_space methods */ inode->i_data.a_ops = &udf_aops; + up_write(&iinfo->i_data_sem); err = inode->i_data.a_ops->writepage(page, &udf_wbc); if (err) { /* Restore everything back so that we don't lose data... */ lock_page(page); kaddr = kmap(page); + down_write(&iinfo->i_data_sem); memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr, kaddr, inode->i_size); kunmap(page); unlock_page(page); iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB; inode->i_data.a_ops = &udf_adinicb_aops; + up_write(&iinfo->i_data_sem); } page_cache_release(page); mark_inode_dirty(inode); @@ -310,7 +325,6 @@ static int udf_get_block(struct inode *inode, sector_t block, struct buffer_head *bh_result, int create) { int err, new; - struct buffer_head *bh; sector_t phys = 0; struct udf_inode_info *iinfo; @@ -323,7 +337,6 @@ static int udf_get_block(struct inode *inode, sector_t block, err = -EIO; new = 0; - bh = NULL; iinfo = UDF_I(inode); down_write(&iinfo->i_data_sem); @@ -332,13 +345,10 @@ static int udf_get_block(struct inode *inode, sector_t block, iinfo->i_next_alloc_goal++; } - err = 0; - bh = inode_getblk(inode, block, &err, &phys, &new); - BUG_ON(bh); - if (err) + phys = inode_getblk(inode, block, &err, &new); + if (!phys) goto abort; - BUG_ON(!phys); if (new) set_buffer_new(bh_result); @@ -547,11 +557,10 @@ out: return err; } -static struct buffer_head *inode_getblk(struct inode *inode, sector_t block, - int *err, sector_t *phys, int *new) +static sector_t inode_getblk(struct inode *inode, sector_t block, + int *err, int *new) { static sector_t last_block; - struct buffer_head *result = NULL; struct kernel_long_ad laarr[EXTENT_MERGE_SIZE]; struct extent_position prev_epos, cur_epos, next_epos; int count = 0, startnum = 0, endnum = 0; @@ -566,6 +575,8 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block, int goal = 0, pgoal = iinfo->i_location.logicalBlockNum; int lastblock = 0; + *err = 0; + *new = 0; prev_epos.offset = udf_file_entry_alloc_offset(inode); prev_epos.block = iinfo->i_location; prev_epos.bh = NULL; @@ -635,8 +646,7 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block, brelse(cur_epos.bh); brelse(next_epos.bh); newblock = udf_get_lb_pblock(inode->i_sb, &eloc, offset); - *phys = newblock; - return NULL; + return newblock; } last_block = block; @@ -664,7 +674,7 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block, brelse(cur_epos.bh); brelse(next_epos.bh); *err = ret; - return NULL; + return 0; } c = 0; offset = 0; @@ -729,7 +739,7 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block, if (!newblocknum) { brelse(prev_epos.bh); *err = -ENOSPC; - return NULL; + return 0; } iinfo->i_lenExtents += inode->i_sb->s_blocksize; } @@ -761,10 +771,10 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block, newblock = udf_get_pblock(inode->i_sb, newblocknum, iinfo->i_location.partitionReferenceNum, 0); - if (!newblock) - return NULL; - *phys = newblock; - *err = 0; + if (!newblock) { + *err = -EIO; + return 0; + } *new = 1; iinfo->i_next_alloc_block = block; iinfo->i_next_alloc_goal = newblocknum; @@ -775,7 +785,7 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block, else mark_inode_dirty(inode); - return result; + return newblock; } static void udf_split_extents(struct inode *inode, int *c, int offset, @@ -1111,10 +1121,9 @@ int udf_setsize(struct inode *inode, loff_t newsize) if (bsize < (udf_file_entry_alloc_offset(inode) + newsize)) { err = udf_expand_file_adinicb(inode); - if (err) { - up_write(&iinfo->i_data_sem); + if (err) return err; - } + down_write(&iinfo->i_data_sem); } else iinfo->i_lenAlloc = newsize; } diff --git a/fs/udf/super.c b/fs/udf/super.c index 0c33225..c09a84da 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -1798,6 +1798,12 @@ static void udf_close_lvid(struct super_block *sb) le16_to_cpu(lvid->descTag.descCRCLength))); lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag); + /* + * We set buffer uptodate unconditionally here to avoid spurious + * warnings from mark_buffer_dirty() when previous EIO has marked + * the buffer as !uptodate + */ + set_buffer_uptodate(bh); mark_buffer_dirty(bh); sbi->s_lvid_dirty = 0; mutex_unlock(&sbi->s_alloc_mutex); diff --git a/fs/udf/symlink.c b/fs/udf/symlink.c index b1d4488..d7c6dbe 100644 --- a/fs/udf/symlink.c +++ b/fs/udf/symlink.c @@ -41,10 +41,16 @@ static void udf_pc_to_char(struct super_block *sb, unsigned char *from, pc = (struct pathComponent *)(from + elen); switch (pc->componentType) { case 1: - if (pc->lengthComponentIdent == 0) { - p = to; - *p++ = '/'; - } + /* + * Symlink points to some place which should be agreed + * upon between originator and receiver of the media. Ignore. + */ + if (pc->lengthComponentIdent > 0) + break; + /* Fall through */ + case 2: + p = to; + *p++ = '/'; break; case 3: memcpy(p, "../", 3); |
