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author | Christoph Hellwig <hch@lst.de> | 2010-06-04 11:29:54 +0200 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-08-09 16:47:30 -0400 |
commit | ea0f04e59543bafb3d2cbe37a0d375acb0bb2c34 (patch) | |
tree | 66a400f5b8e9a01acb72107c72e504325af6fe67 /fs | |
parent | eafdc7d190a944c755a9fe68573c193e6e0217e7 (diff) | |
download | linux-stable-ea0f04e59543bafb3d2cbe37a0d375acb0bb2c34.tar.gz linux-stable-ea0f04e59543bafb3d2cbe37a0d375acb0bb2c34.tar.bz2 linux-stable-ea0f04e59543bafb3d2cbe37a0d375acb0bb2c34.zip |
get rid of nobh_write_begin_newtrunc
Move the call to vmtruncate to get rid of accessive blocks to the only
remaining caller and rename the non-truncating version to nobh_write_begin.
Get rid of the superflous file argument to it while we're at it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/buffer.c | 37 | ||||
-rw-r--r-- | fs/ext2/inode.c | 9 | ||||
-rw-r--r-- | fs/jfs/inode.c | 11 |
3 files changed, 16 insertions, 41 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index d54812b198e9..559daf76bca4 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -2510,11 +2510,11 @@ static void attach_nobh_buffers(struct page *page, struct buffer_head *head) } /* - * Filesystems implementing the new truncate sequence should use the - * _newtrunc postfix variant which won't incorrectly call vmtruncate. + * On entry, the page is fully not uptodate. + * On exit the page is fully uptodate in the areas outside (from,to) * The filesystem needs to handle block truncation upon failure. */ -int nobh_write_begin_newtrunc(struct file *file, struct address_space *mapping, +int nobh_write_begin(struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata, get_block_t *get_block) @@ -2547,7 +2547,7 @@ int nobh_write_begin_newtrunc(struct file *file, struct address_space *mapping, unlock_page(page); page_cache_release(page); *pagep = NULL; - return block_write_begin_newtrunc(file, mapping, pos, len, + return block_write_begin_newtrunc(NULL, mapping, pos, len, flags, pagep, fsdata, get_block); } @@ -2654,35 +2654,6 @@ out_release: return ret; } -EXPORT_SYMBOL(nobh_write_begin_newtrunc); - -/* - * On entry, the page is fully not uptodate. - * On exit the page is fully uptodate in the areas outside (from,to) - */ -int nobh_write_begin(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned flags, - struct page **pagep, void **fsdata, - get_block_t *get_block) -{ - int ret; - - ret = nobh_write_begin_newtrunc(file, mapping, pos, len, flags, - pagep, fsdata, get_block); - - /* - * prepare_write() may have instantiated a few blocks - * outside i_size. Trim these off again. Don't need - * i_size_read because we hold i_mutex. - */ - if (unlikely(ret)) { - loff_t isize = mapping->host->i_size; - if (pos + len > isize) - vmtruncate(mapping->host, isize); - } - - return ret; -} EXPORT_SYMBOL(nobh_write_begin); int nobh_write_end(struct file *file, struct address_space *mapping, diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index f36e967e4fde..348805cd4109 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -806,13 +806,8 @@ ext2_nobh_write_begin(struct file *file, struct address_space *mapping, { int ret; - /* - * Dir-in-pagecache still uses ext2_write_begin. Would have to rework - * directory handling code to pass around offsets rather than struct - * pages in order to make this work easily. - */ - ret = nobh_write_begin_newtrunc(file, mapping, pos, len, flags, pagep, - fsdata, ext2_get_block); + ret = nobh_write_begin(mapping, pos, len, flags, pagep, fsdata, + ext2_get_block); if (ret < 0) ext2_write_failed(mapping, pos + len); return ret; diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index 79e6cda28181..c38dc1806281 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -303,8 +303,17 @@ static int jfs_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata) { - return nobh_write_begin(file, mapping, pos, len, flags, pagep, fsdata, + int ret; + + ret = nobh_write_begin(mapping, pos, len, flags, pagep, fsdata, jfs_get_block); + if (unlikely(ret)) { + loff_t isize = mapping->host->i_size; + if (pos + len > isize) + vmtruncate(mapping->host, isize); + } + + return ret; } static sector_t jfs_bmap(struct address_space *mapping, sector_t block) |