ext4: remove unused code from ext4_find_entry()

[linux-2.6-omap-h63xx.git] / fs / ext4 / file.c

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 3c6c1fd2be902524eb1901776aa8a0b45db4a167..a6b2aa14626eaadcdd7334367f3898af26a3caab 100644 (file)
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -56,8 +56,25 @@ ext4_file_write(struct kiocb *iocb, const struct iovec *iov,
        ssize_t ret;
        int err;
 
-       ret = generic_file_aio_write(iocb, iov, nr_segs, pos);
+       /*
+        * If we have encountered a bitmap-format file, the size limit
+        * is smaller than s_maxbytes, which is for extent-mapped files.
+        */
+
+       if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)) {
+               struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
+               size_t length = iov_length(iov, nr_segs);
 
+               if (pos > sbi->s_bitmap_maxbytes)
+                       return -EFBIG;
+
+               if (pos + length > sbi->s_bitmap_maxbytes) {
+                       nr_segs = iov_shorten((struct iovec *)iov, nr_segs,
+                                             sbi->s_bitmap_maxbytes - pos);
+               }
+       }
+
+       ret = generic_file_aio_write(iocb, iov, nr_segs, pos);
        /*
         * Skip flushing if there was an error, or if nothing was written.
         */
@@ -120,7 +137,6 @@ const struct file_operations ext4_file_operations = {
        .open           = generic_file_open,
        .release        = ext4_release_file,
        .fsync          = ext4_sync_file,
-       .sendfile       = generic_file_sendfile,
        .splice_read    = generic_file_splice_read,
        .splice_write   = generic_file_splice_write,
 };
@@ -135,5 +151,6 @@ const struct inode_operations ext4_file_inode_operations = {
        .removexattr    = generic_removexattr,
 #endif
        .permission     = ext4_permission,
+       .fallocate      = ext4_fallocate,
 };