ext4: fix error paths in swap_inode_boot_loader()

[firefly-linux-kernel-4.4.55.git] / fs / ext4 / super.c

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 94cc84db7c9aae349b44be229e993ec906a0a25a..e4923b6a9e394853998d1868c48af793ecaeafe0 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1341,7 +1341,7 @@ static const struct mount_opts {
        {Opt_delalloc, EXT4_MOUNT_DELALLOC,
         MOPT_EXT4_ONLY | MOPT_SET | MOPT_EXPLICIT},
        {Opt_nodelalloc, EXT4_MOUNT_DELALLOC,
-        MOPT_EXT4_ONLY | MOPT_CLEAR | MOPT_EXPLICIT},
+        MOPT_EXT4_ONLY | MOPT_CLEAR},
        {Opt_journal_checksum, EXT4_MOUNT_JOURNAL_CHECKSUM,
         MOPT_EXT4_ONLY | MOPT_SET},
        {Opt_journal_async_commit, (EXT4_MOUNT_JOURNAL_ASYNC_COMMIT |
@@ -1684,12 +1684,6 @@ static inline void ext4_show_quota_options(struct seq_file *seq,
 
        if (sbi->s_qf_names[GRPQUOTA])
                seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]);
-
-       if (test_opt(sb, USRQUOTA))
-               seq_puts(seq, ",usrquota");
-
-       if (test_opt(sb, GRPQUOTA))
-               seq_puts(seq, ",grpquota");
 #endif
 }
 
@@ -3219,10 +3213,18 @@ int ext4_calculate_overhead(struct super_block *sb)
 }
 
 
-static ext4_fsblk_t ext4_calculate_resv_clusters(struct ext4_sb_info *sbi)
+static ext4_fsblk_t ext4_calculate_resv_clusters(struct super_block *sb)
 {
        ext4_fsblk_t resv_clusters;
 
+       /*
+        * There's no need to reserve anything when we aren't using extents.
+        * The space estimates are exact, there are no unwritten extents,
+        * hole punching doesn't need new metadata... This is needed especially
+        * to keep ext2/3 backward compatibility.
+        */
+       if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS))
+               return 0;
        /*
         * By default we reserve 2% or 4096 clusters, whichever is smaller.
         * This should cover the situations where we can not afford to run
@@ -3231,7 +3233,8 @@ static ext4_fsblk_t ext4_calculate_resv_clusters(struct ext4_sb_info *sbi)
         * allocation would require 1, or 2 blocks, higher numbers are
         * very rare.
         */
-       resv_clusters = ext4_blocks_count(sbi->s_es) >> sbi->s_cluster_bits;
+       resv_clusters = ext4_blocks_count(EXT4_SB(sb)->s_es) >>
+                       EXT4_SB(sb)->s_cluster_bits;
 
        do_div(resv_clusters, 50);
        resv_clusters = min_t(ext4_fsblk_t, resv_clusters, 4096);
@@ -3451,7 +3454,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                }
                if (test_opt(sb, DIOREAD_NOLOCK)) {
                        ext4_msg(sb, KERN_ERR, "can't mount with "
-                                "both data=journal and delalloc");
+                                "both data=journal and dioread_nolock");
                        goto failed_mount;
                }
                if (test_opt(sb, DELALLOC))
@@ -3586,10 +3589,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
        sbi->s_addr_per_block_bits = ilog2(EXT4_ADDR_PER_BLOCK(sb));
        sbi->s_desc_per_block_bits = ilog2(EXT4_DESC_PER_BLOCK(sb));
 
-       /* Do we have standard group size of blocksize * 8 blocks ? */
-       if (sbi->s_blocks_per_group == blocksize << 3)
-               set_opt2(sb, STD_GROUP_SIZE);
-
        for (i = 0; i < 4; i++)
                sbi->s_hash_seed[i] = le32_to_cpu(es->s_hash_seed[i]);
        sbi->s_def_hash_version = es->s_def_hash_version;
@@ -3659,6 +3658,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                goto failed_mount;
        }
 
+       /* Do we have standard group size of clustersize * 8 blocks ? */
+       if (sbi->s_blocks_per_group == clustersize << 3)
+               set_opt2(sb, STD_GROUP_SIZE);
+
        /*
         * Test whether we have more sectors than will fit in sector_t,
         * and whether the max offset is addressable by the page cache.
@@ -3975,10 +3978,10 @@ no_journal:
                         "available");
        }
 
-       err = ext4_reserve_clusters(sbi, ext4_calculate_resv_clusters(sbi));
+       err = ext4_reserve_clusters(sbi, ext4_calculate_resv_clusters(sb));
        if (err) {
                ext4_msg(sb, KERN_ERR, "failed to reserve %llu clusters for "
-                        "reserved pool", ext4_calculate_resv_clusters(sbi));
+                        "reserved pool", ext4_calculate_resv_clusters(sb));
                goto failed_mount4a;
        }
 
@@ -4652,6 +4655,21 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
                goto restore_opts;
        }
 
+       if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
+               if (test_opt2(sb, EXPLICIT_DELALLOC)) {
+                       ext4_msg(sb, KERN_ERR, "can't mount with "
+                                "both data=journal and delalloc");
+                       err = -EINVAL;
+                       goto restore_opts;
+               }
+               if (test_opt(sb, DIOREAD_NOLOCK)) {
+                       ext4_msg(sb, KERN_ERR, "can't mount with "
+                                "both data=journal and dioread_nolock");
+                       err = -EINVAL;
+                       goto restore_opts;
+               }
+       }
+
        if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED)
                ext4_abort(sb, "Abort forced by user");
 
@@ -5406,6 +5424,7 @@ static void __exit ext4_exit_fs(void)
        kset_unregister(ext4_kset);
        ext4_exit_system_zone();
        ext4_exit_pageio();
+       ext4_exit_es();
 }
 
 MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others");